diff --git a/bun.lock b/bun.lock
index 483f551d31..c700ba66ec 100644
--- a/bun.lock
+++ b/bun.lock
@@ -27,7 +27,7 @@
     },
     "packages/app": {
       "name": "@opencode-ai/app",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@kobalte/core": "catalog:",
         "@opencode-ai/sdk": "workspace:*",
@@ -81,7 +81,7 @@
     },
     "packages/console/app": {
       "name": "@opencode-ai/console-app",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@cloudflare/vite-plugin": "1.15.2",
         "@ibm/plex": "6.4.1",
@@ -115,7 +115,7 @@
     },
     "packages/console/core": {
       "name": "@opencode-ai/console-core",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@aws-sdk/client-sts": "3.782.0",
         "@jsx-email/render": "1.1.1",
@@ -142,7 +142,7 @@
     },
     "packages/console/function": {
       "name": "@opencode-ai/console-function",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@ai-sdk/anthropic": "3.0.64",
         "@ai-sdk/openai": "3.0.48",
@@ -166,7 +166,7 @@
     },
     "packages/console/mail": {
       "name": "@opencode-ai/console-mail",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@jsx-email/all": "2.2.3",
         "@jsx-email/cli": "1.4.3",
@@ -190,7 +190,7 @@
     },
     "packages/desktop": {
       "name": "@opencode-ai/desktop",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@opencode-ai/app": "workspace:*",
         "@opencode-ai/ui": "workspace:*",
@@ -223,7 +223,7 @@
     },
     "packages/desktop-electron": {
       "name": "@opencode-ai/desktop-electron",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "effect": "catalog:",
         "electron-context-menu": "4.1.2",
@@ -266,7 +266,7 @@
     },
     "packages/enterprise": {
       "name": "@opencode-ai/enterprise",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@opencode-ai/ui": "workspace:*",
         "@opencode-ai/util": "workspace:*",
@@ -295,7 +295,7 @@
     },
     "packages/function": {
       "name": "@opencode-ai/function",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@octokit/auth-app": "8.0.1",
         "@octokit/rest": "catalog:",
@@ -311,7 +311,7 @@
     },
     "packages/opencode": {
       "name": "opencode",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "bin": {
         "opencode": "./bin/opencode",
       },
@@ -447,7 +447,7 @@
     },
     "packages/plugin": {
       "name": "@opencode-ai/plugin",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@opencode-ai/sdk": "workspace:*",
         "zod": "catalog:",
@@ -481,7 +481,7 @@
     },
     "packages/sdk/js": {
       "name": "@opencode-ai/sdk",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "cross-spawn": "catalog:",
       },
@@ -496,7 +496,7 @@
     },
     "packages/slack": {
       "name": "@opencode-ai/slack",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@opencode-ai/sdk": "workspace:*",
         "@slack/bolt": "^3.17.1",
@@ -531,7 +531,7 @@
     },
     "packages/ui": {
       "name": "@opencode-ai/ui",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@kobalte/core": "catalog:",
         "@opencode-ai/sdk": "workspace:*",
@@ -580,7 +580,7 @@
     },
     "packages/util": {
       "name": "@opencode-ai/util",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "zod": "catalog:",
       },
@@ -591,7 +591,7 @@
     },
     "packages/web": {
       "name": "@opencode-ai/web",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@astrojs/cloudflare": "12.6.3",
         "@astrojs/markdown-remark": "6.3.1",
diff --git a/packages/app/package.json b/packages/app/package.json
index a052793d82..3e12c492b6 100644
--- a/packages/app/package.json
+++ b/packages/app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/app",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "description": "",
   "type": "module",
   "exports": {
diff --git a/packages/console/app/package.json b/packages/console/app/package.json
index 786c2baeda..dc3362e979 100644
--- a/packages/console/app/package.json
+++ b/packages/console/app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/console-app",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/console/core/package.json b/packages/console/core/package.json
index 5184c2fc0a..9059734ccd 100644
--- a/packages/console/core/package.json
+++ b/packages/console/core/package.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "@opencode-ai/console-core",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "private": true,
   "type": "module",
   "license": "MIT",
diff --git a/packages/console/function/package.json b/packages/console/function/package.json
index b34fa73777..d8f0e0c0e2 100644
--- a/packages/console/function/package.json
+++ b/packages/console/function/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/console-function",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "$schema": "https://json.schemastore.org/package.json",
   "private": true,
   "type": "module",
diff --git a/packages/console/mail/package.json b/packages/console/mail/package.json
index 04a0a06bae..0976bb3e21 100644
--- a/packages/console/mail/package.json
+++ b/packages/console/mail/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/console-mail",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "dependencies": {
     "@jsx-email/all": "2.2.3",
     "@jsx-email/cli": "1.4.3",
diff --git a/packages/desktop-electron/package.json b/packages/desktop-electron/package.json
index f8274a4759..48c17d0df2 100644
--- a/packages/desktop-electron/package.json
+++ b/packages/desktop-electron/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@opencode-ai/desktop-electron",
   "private": true,
-  "version": "1.4.1",
+  "version": "1.4.2",
   "type": "module",
   "license": "MIT",
   "homepage": "https://opencode.ai",
diff --git a/packages/desktop/package.json b/packages/desktop/package.json
index 016a205bdb..943cbeb203 100644
--- a/packages/desktop/package.json
+++ b/packages/desktop/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@opencode-ai/desktop",
   "private": true,
-  "version": "1.4.1",
+  "version": "1.4.2",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/enterprise/package.json b/packages/enterprise/package.json
index c9d98dc039..10a909c8c6 100644
--- a/packages/enterprise/package.json
+++ b/packages/enterprise/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/enterprise",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "private": true,
   "type": "module",
   "license": "MIT",
diff --git a/packages/extensions/zed/extension.toml b/packages/extensions/zed/extension.toml
index 7c49722a58..95fc2b1c53 100644
--- a/packages/extensions/zed/extension.toml
+++ b/packages/extensions/zed/extension.toml
@@ -1,7 +1,7 @@
 id = "opencode"
 name = "OpenCode"
 description = "The open source coding agent."
-version = "1.4.1"
+version = "1.4.2"
 schema_version = 1
 authors = ["Anomaly"]
 repository = "https://github.com/anomalyco/opencode"
@@ -11,26 +11,26 @@ name = "OpenCode"
 icon = "./icons/opencode.svg"
 
 [agent_servers.opencode.targets.darwin-aarch64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.1/opencode-darwin-arm64.zip"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.2/opencode-darwin-arm64.zip"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.darwin-x86_64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.1/opencode-darwin-x64.zip"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.2/opencode-darwin-x64.zip"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.linux-aarch64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.1/opencode-linux-arm64.tar.gz"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.2/opencode-linux-arm64.tar.gz"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.linux-x86_64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.1/opencode-linux-x64.tar.gz"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.2/opencode-linux-x64.tar.gz"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.windows-x86_64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.1/opencode-windows-x64.zip"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.2/opencode-windows-x64.zip"
 cmd = "./opencode.exe"
 args = ["acp"]
diff --git a/packages/function/package.json b/packages/function/package.json
index baeee69438..dd54e9c092 100644
--- a/packages/function/package.json
+++ b/packages/function/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/function",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "$schema": "https://json.schemastore.org/package.json",
   "private": true,
   "type": "module",
diff --git a/packages/opencode/package.json b/packages/opencode/package.json
index f842a97bf5..934ef0869c 100644
--- a/packages/opencode/package.json
+++ b/packages/opencode/package.json
@@ -1,6 +1,6 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "name": "opencode",
   "type": "module",
   "license": "MIT",
diff --git a/packages/opencode/src/cli/cmd/mcp.ts b/packages/opencode/src/cli/cmd/mcp.ts
index c45b9e55d0..41e498102e 100644
--- a/packages/opencode/src/cli/cmd/mcp.ts
+++ b/packages/opencode/src/cli/cmd/mcp.ts
@@ -688,6 +688,7 @@ export const McpDebugCommand = cmd({
                 clientId: oauthConfig?.clientId,
                 clientSecret: oauthConfig?.clientSecret,
                 scope: oauthConfig?.scope,
+                redirectUri: oauthConfig?.redirectUri,
               },
               {
                 onRedirect: async () => {},
diff --git a/packages/opencode/src/cli/cmd/tui/routes/session/index.tsx b/packages/opencode/src/cli/cmd/tui/routes/session/index.tsx
index 18335b6e5f..94308bb034 100644
--- a/packages/opencode/src/cli/cmd/tui/routes/session/index.tsx
+++ b/packages/opencode/src/cli/cmd/tui/routes/session/index.tsx
@@ -189,7 +189,7 @@ export function Session() {
   const [timestamps, setTimestamps] = kv.signal<"hide" | "show">("timestamps", "hide")
   const [showDetails, setShowDetails] = kv.signal("tool_details_visibility", true)
   const [showAssistantMetadata, setShowAssistantMetadata] = kv.signal("assistant_metadata_visibility", true)
-  const [showScrollbar, setShowScrollbar] = kv.signal("scrollbar_visible", true)
+  const [showScrollbar, setShowScrollbar] = kv.signal("scrollbar_visible", false)
   const [diffWrapMode] = kv.signal<"word" | "none">("diff_wrap_mode", "word")
   const [animationsEnabled, setAnimationsEnabled] = kv.signal("animations_enabled", true)
   const [showGenericToolOutput, setShowGenericToolOutput] = kv.signal("generic_tool_output_visibility", false)
diff --git a/packages/opencode/src/config/config.ts b/packages/opencode/src/config/config.ts
index 1952e3b572..ff79b739fe 100644
--- a/packages/opencode/src/config/config.ts
+++ b/packages/opencode/src/config/config.ts
@@ -399,6 +399,10 @@ export namespace Config {
         .describe("OAuth client ID. If not provided, dynamic client registration (RFC 7591) will be attempted."),
       clientSecret: z.string().optional().describe("OAuth client secret (if required by the authorization server)"),
       scope: z.string().optional().describe("OAuth scopes to request during authorization"),
+      redirectUri: z
+        .string()
+        .optional()
+        .describe("OAuth redirect URI (default: http://127.0.0.1:19876/mcp/oauth/callback)."),
     })
     .strict()
     .meta({
diff --git a/packages/opencode/src/effect/runner.ts b/packages/opencode/src/effect/runner.ts
index cb12b4c52b..38c45a6342 100644
--- a/packages/opencode/src/effect/runner.ts
+++ b/packages/opencode/src/effect/runner.ts
@@ -1,10 +1,10 @@
-import { Cause, Deferred, Effect, Exit, Fiber, Option, Schema, Scope, SynchronizedRef } from "effect"
+import { Cause, Deferred, Effect, Exit, Fiber, Schema, Scope, SynchronizedRef } from "effect"
 
 export interface Runner<A, E = never> {
   readonly state: Runner.State<A, E>
   readonly busy: boolean
   readonly ensureRunning: (work: Effect.Effect<A, E>) => Effect.Effect<A, E>
-  readonly startShell: (work: (signal: AbortSignal) => Effect.Effect<A, E>) => Effect.Effect<A, E>
+  readonly startShell: (work: Effect.Effect<A, E>) => Effect.Effect<A, E>
   readonly cancel: Effect.Effect<void>
 }
 
@@ -20,7 +20,6 @@ export namespace Runner {
   interface ShellHandle<A, E> {
     id: number
     fiber: Fiber.Fiber<A, E>
-    abort: AbortController
   }
 
   interface PendingHandle<A, E> {
@@ -100,13 +99,7 @@ export namespace Runner {
         }),
       ).pipe(Effect.flatten)
 
-    const stopShell = (shell: ShellHandle<A, E>) =>
-      Effect.gen(function* () {
-        shell.abort.abort()
-        const exit = yield* Fiber.await(shell.fiber).pipe(Effect.timeoutOption("100 millis"))
-        if (Option.isNone(exit)) yield* Fiber.interrupt(shell.fiber)
-        yield* Fiber.await(shell.fiber).pipe(Effect.exit, Effect.asVoid)
-      })
+    const stopShell = (shell: ShellHandle<A, E>) => Fiber.interrupt(shell.fiber)
 
     const ensureRunning = (work: Effect.Effect<A, E>) =>
       SynchronizedRef.modifyEffect(
@@ -138,7 +131,7 @@ export namespace Runner {
         ),
       )
 
-    const startShell = (work: (signal: AbortSignal) => Effect.Effect<A, E>) =>
+    const startShell = (work: Effect.Effect<A, E>) =>
       SynchronizedRef.modifyEffect(
         ref,
         Effect.fnUntraced(function* (st) {
@@ -153,9 +146,8 @@ export namespace Runner {
           }
           yield* busy
           const id = next()
-          const abort = new AbortController()
-          const fiber = yield* work(abort.signal).pipe(Effect.ensuring(finishShell(id)), Effect.forkChild)
-          const shell = { id, fiber, abort } satisfies ShellHandle<A, E>
+          const fiber = yield* work.pipe(Effect.ensuring(finishShell(id)), Effect.forkChild)
+          const shell = { id, fiber } satisfies ShellHandle<A, E>
           return [
             Effect.gen(function* () {
               const exit = yield* Fiber.await(fiber)
diff --git a/packages/opencode/src/mcp/index.ts b/packages/opencode/src/mcp/index.ts
index 45e3e2567a..3196c87768 100644
--- a/packages/opencode/src/mcp/index.ts
+++ b/packages/opencode/src/mcp/index.ts
@@ -286,6 +286,7 @@ export namespace MCP {
               clientId: oauthConfig?.clientId,
               clientSecret: oauthConfig?.clientSecret,
               scope: oauthConfig?.scope,
+              redirectUri: oauthConfig?.redirectUri,
             },
             {
               onRedirect: async (url) => {
@@ -716,13 +717,16 @@ export namespace MCP {
         if (mcpConfig.type !== "remote") throw new Error(`MCP server ${mcpName} is not a remote server`)
         if (mcpConfig.oauth === false) throw new Error(`MCP server ${mcpName} has OAuth explicitly disabled`)
 
-        yield* Effect.promise(() => McpOAuthCallback.ensureRunning())
+        // OAuth config is optional - if not provided, we'll use auto-discovery
+        const oauthConfig = typeof mcpConfig.oauth === "object" ? mcpConfig.oauth : undefined
+
+        // Start the callback server with custom redirectUri if configured
+        yield* Effect.promise(() => McpOAuthCallback.ensureRunning(oauthConfig?.redirectUri))
 
         const oauthState = Array.from(crypto.getRandomValues(new Uint8Array(32)))
           .map((b) => b.toString(16).padStart(2, "0"))
           .join("")
         yield* auth.updateOAuthState(mcpName, oauthState)
-        const oauthConfig = typeof mcpConfig.oauth === "object" ? mcpConfig.oauth : undefined
         let capturedUrl: URL | undefined
         const authProvider = new McpOAuthProvider(
           mcpName,
@@ -731,6 +735,7 @@ export namespace MCP {
             clientId: oauthConfig?.clientId,
             clientSecret: oauthConfig?.clientSecret,
             scope: oauthConfig?.scope,
+            redirectUri: oauthConfig?.redirectUri,
           },
           {
             onRedirect: async (url) => {
diff --git a/packages/opencode/src/mcp/oauth-callback.ts b/packages/opencode/src/mcp/oauth-callback.ts
index dd1d886fc1..b5b6a7a6eb 100644
--- a/packages/opencode/src/mcp/oauth-callback.ts
+++ b/packages/opencode/src/mcp/oauth-callback.ts
@@ -1,10 +1,14 @@
 import { createConnection } from "net"
 import { createServer } from "http"
 import { Log } from "../util/log"
-import { OAUTH_CALLBACK_PORT, OAUTH_CALLBACK_PATH } from "./oauth-provider"
+import { OAUTH_CALLBACK_PORT, OAUTH_CALLBACK_PATH, parseRedirectUri } from "./oauth-provider"
 
 const log = Log.create({ service: "mcp.oauth-callback" })
 
+// Current callback server configuration (may differ from defaults if custom redirectUri is used)
+let currentPort = OAUTH_CALLBACK_PORT
+let currentPath = OAUTH_CALLBACK_PATH
+
 const HTML_SUCCESS = `<!DOCTYPE html>
 <html>
 <head>
@@ -71,9 +75,9 @@ export namespace McpOAuthCallback {
   }
 
   function handleRequest(req: import("http").IncomingMessage, res: import("http").ServerResponse) {
-    const url = new URL(req.url || "/", `http://localhost:${OAUTH_CALLBACK_PORT}`)
+    const url = new URL(req.url || "/", `http://localhost:${currentPort}`)
 
-    if (url.pathname !== OAUTH_CALLBACK_PATH) {
+    if (url.pathname !== currentPath) {
       res.writeHead(404)
       res.end("Not found")
       return
@@ -135,19 +139,31 @@ export namespace McpOAuthCallback {
     res.end(HTML_SUCCESS)
   }
 
-  export async function ensureRunning(): Promise<void> {
+  export async function ensureRunning(redirectUri?: string): Promise<void> {
+    // Parse the redirect URI to get port and path (uses defaults if not provided)
+    const { port, path } = parseRedirectUri(redirectUri)
+
+    // If server is running on a different port/path, stop it first
+    if (server && (currentPort !== port || currentPath !== path)) {
+      log.info("stopping oauth callback server to reconfigure", { oldPort: currentPort, newPort: port })
+      await stop()
+    }
+
     if (server) return
 
-    const running = await isPortInUse()
+    const running = await isPortInUse(port)
     if (running) {
-      log.info("oauth callback server already running on another instance", { port: OAUTH_CALLBACK_PORT })
+      log.info("oauth callback server already running on another instance", { port })
       return
     }
 
+    currentPort = port
+    currentPath = path
+
     server = createServer(handleRequest)
     await new Promise<void>((resolve, reject) => {
-      server!.listen(OAUTH_CALLBACK_PORT, () => {
-        log.info("oauth callback server started", { port: OAUTH_CALLBACK_PORT })
+      server!.listen(currentPort, () => {
+        log.info("oauth callback server started", { port: currentPort, path: currentPath })
         resolve()
       })
       server!.on("error", reject)
@@ -182,9 +198,9 @@ export namespace McpOAuthCallback {
     }
   }
 
-  export async function isPortInUse(): Promise<boolean> {
+  export async function isPortInUse(port: number = OAUTH_CALLBACK_PORT): Promise<boolean> {
     return new Promise((resolve) => {
-      const socket = createConnection(OAUTH_CALLBACK_PORT, "127.0.0.1")
+      const socket = createConnection(port, "127.0.0.1")
       socket.on("connect", () => {
         socket.destroy()
         resolve(true)
diff --git a/packages/opencode/src/mcp/oauth-provider.ts b/packages/opencode/src/mcp/oauth-provider.ts
index b4da73169e..d675fc71e4 100644
--- a/packages/opencode/src/mcp/oauth-provider.ts
+++ b/packages/opencode/src/mcp/oauth-provider.ts
@@ -17,6 +17,7 @@ export interface McpOAuthConfig {
   clientId?: string
   clientSecret?: string
   scope?: string
+  redirectUri?: string
 }
 
 export interface McpOAuthCallbacks {
@@ -32,6 +33,9 @@ export class McpOAuthProvider implements OAuthClientProvider {
   ) {}
 
   get redirectUrl(): string {
+    if (this.config.redirectUri) {
+      return this.config.redirectUri
+    }
     return `http://127.0.0.1:${OAUTH_CALLBACK_PORT}${OAUTH_CALLBACK_PATH}`
   }
 
@@ -183,3 +187,22 @@ export class McpOAuthProvider implements OAuthClientProvider {
 }
 
 export { OAUTH_CALLBACK_PORT, OAUTH_CALLBACK_PATH }
+
+/**
+ * Parse a redirect URI to extract port and path for the callback server.
+ * Returns defaults if the URI can't be parsed.
+ */
+export function parseRedirectUri(redirectUri?: string): { port: number; path: string } {
+  if (!redirectUri) {
+    return { port: OAUTH_CALLBACK_PORT, path: OAUTH_CALLBACK_PATH }
+  }
+
+  try {
+    const url = new URL(redirectUri)
+    const port = url.port ? parseInt(url.port, 10) : url.protocol === "https:" ? 443 : 80
+    const path = url.pathname || OAUTH_CALLBACK_PATH
+    return { port, path }
+  } catch {
+    return { port: OAUTH_CALLBACK_PORT, path: OAUTH_CALLBACK_PATH }
+  }
+}
diff --git a/packages/opencode/src/plugin/codex.ts b/packages/opencode/src/plugin/codex.ts
index bdeef9823f..1e127fae54 100644
--- a/packages/opencode/src/plugin/codex.ts
+++ b/packages/opencode/src/plugin/codex.ts
@@ -376,9 +376,9 @@ export async function CodexAuthPlugin(input: PluginInput): Promise<Hooks> {
           "gpt-5.4",
           "gpt-5.4-mini",
         ])
-        for (const modelId of Object.keys(provider.models)) {
+        for (const [modelId, model] of Object.entries(provider.models)) {
           if (modelId.includes("codex")) continue
-          if (allowedModels.has(modelId)) continue
+          if (allowedModels.has(model.api.id)) continue
           delete provider.models[modelId]
         }
 
diff --git a/packages/opencode/src/provider/models.ts b/packages/opencode/src/provider/models.ts
index 23f61d804e..2d787588b0 100644
--- a/packages/opencode/src/provider/models.ts
+++ b/packages/opencode/src/provider/models.ts
@@ -22,6 +22,27 @@ export namespace ModelsDev {
   )
   const ttl = 5 * 60 * 1000
 
+  type JsonValue = string | number | boolean | null | { [key: string]: JsonValue } | JsonValue[]
+
+  const JsonValue: z.ZodType<JsonValue> = z.lazy(() =>
+    z.union([z.string(), z.number(), z.boolean(), z.null(), z.array(JsonValue), z.record(z.string(), JsonValue)]),
+  )
+
+  const Cost = z.object({
+    input: z.number(),
+    output: z.number(),
+    cache_read: z.number().optional(),
+    cache_write: z.number().optional(),
+    context_over_200k: z
+      .object({
+        input: z.number(),
+        output: z.number(),
+        cache_read: z.number().optional(),
+        cache_write: z.number().optional(),
+      })
+      .optional(),
+  })
+
   export const Model = z.object({
     id: z.string(),
     name: z.string(),
@@ -41,22 +62,7 @@ export namespace ModelsDev {
           .strict(),
       ])
       .optional(),
-    cost: z
-      .object({
-        input: z.number(),
-        output: z.number(),
-        cache_read: z.number().optional(),
-        cache_write: z.number().optional(),
-        context_over_200k: z
-          .object({
-            input: z.number(),
-            output: z.number(),
-            cache_read: z.number().optional(),
-            cache_write: z.number().optional(),
-          })
-          .optional(),
-      })
-      .optional(),
+    cost: Cost.optional(),
     limit: z.object({
       context: z.number(),
       input: z.number().optional(),
@@ -68,7 +74,24 @@ export namespace ModelsDev {
         output: z.array(z.enum(["text", "audio", "image", "video", "pdf"])),
       })
       .optional(),
-    experimental: z.boolean().optional(),
+    experimental: z
+      .object({
+        modes: z
+          .record(
+            z.string(),
+            z.object({
+              cost: Cost.optional(),
+              provider: z
+                .object({
+                  body: z.record(z.string(), JsonValue).optional(),
+                  headers: z.record(z.string(), z.string()).optional(),
+                })
+                .optional(),
+            }),
+          )
+          .optional(),
+      })
+      .optional(),
     status: z.enum(["alpha", "beta", "deprecated"]).optional(),
     provider: z.object({ npm: z.string().optional(), api: z.string().optional() }).optional(),
   })
diff --git a/packages/opencode/src/provider/provider.ts b/packages/opencode/src/provider/provider.ts
index 8d5c9f2ced..004fb77f91 100644
--- a/packages/opencode/src/provider/provider.ts
+++ b/packages/opencode/src/provider/provider.ts
@@ -926,6 +926,28 @@ export namespace Provider {
 
   export class Service extends ServiceMap.Service<Service, Interface>()("@opencode/Provider") {}
 
+  function cost(c: ModelsDev.Model["cost"]): Model["cost"] {
+    const result: Model["cost"] = {
+      input: c?.input ?? 0,
+      output: c?.output ?? 0,
+      cache: {
+        read: c?.cache_read ?? 0,
+        write: c?.cache_write ?? 0,
+      },
+    }
+    if (c?.context_over_200k) {
+      result.experimentalOver200K = {
+        cache: {
+          read: c.context_over_200k.cache_read ?? 0,
+          write: c.context_over_200k.cache_write ?? 0,
+        },
+        input: c.context_over_200k.input,
+        output: c.context_over_200k.output,
+      }
+    }
+    return result
+  }
+
   function fromModelsDevModel(provider: ModelsDev.Provider, model: ModelsDev.Model): Model {
     const m: Model = {
       id: ModelID.make(model.id),
@@ -940,24 +962,7 @@ export namespace Provider {
       status: model.status ?? "active",
       headers: {},
       options: {},
-      cost: {
-        input: model.cost?.input ?? 0,
-        output: model.cost?.output ?? 0,
-        cache: {
-          read: model.cost?.cache_read ?? 0,
-          write: model.cost?.cache_write ?? 0,
-        },
-        experimentalOver200K: model.cost?.context_over_200k
-          ? {
-              cache: {
-                read: model.cost.context_over_200k.cache_read ?? 0,
-                write: model.cost.context_over_200k.cache_write ?? 0,
-              },
-              input: model.cost.context_over_200k.input,
-              output: model.cost.context_over_200k.output,
-            }
-          : undefined,
-      },
+      cost: cost(model.cost),
       limit: {
         context: model.limit.context,
         input: model.limit.input,
@@ -994,13 +999,31 @@ export namespace Provider {
   }
 
   export function fromModelsDevProvider(provider: ModelsDev.Provider): Info {
+    const models: Record<string, Model> = {}
+    for (const [key, model] of Object.entries(provider.models)) {
+      models[key] = fromModelsDevModel(provider, model)
+      for (const [mode, opts] of Object.entries(model.experimental?.modes ?? {})) {
+        const id = `${model.id}-${mode}`
+        const m = fromModelsDevModel(provider, model)
+        m.id = ModelID.make(id)
+        m.name = `${model.name} ${mode[0].toUpperCase()}${mode.slice(1)}`
+        if (opts.cost) m.cost = mergeDeep(m.cost, cost(opts.cost))
+        // convert body params to camelCase for ai sdk compatibility
+        if (opts.provider?.body)
+          m.options = Object.fromEntries(
+            Object.entries(opts.provider.body).map(([k, v]) => [k.replace(/_([a-z])/g, (_, c) => c.toUpperCase()), v]),
+          )
+        if (opts.provider?.headers) m.headers = opts.provider.headers
+        models[id] = m
+      }
+    }
     return {
       id: ProviderID.make(provider.id),
       source: "custom",
       name: provider.name,
       env: provider.env ?? [],
       options: {},
-      models: mapValues(provider.models, (model) => fromModelsDevModel(provider, model)),
+      models,
     }
   }
 
diff --git a/packages/opencode/src/server/routes/session.ts b/packages/opencode/src/server/routes/session.ts
index 68be1a6a5a..b57ed9d47c 100644
--- a/packages/opencode/src/server/routes/session.ts
+++ b/packages/opencode/src/server/routes/session.ts
@@ -121,7 +121,6 @@ export const SessionRoutes = lazy(() =>
       ),
       async (c) => {
         const sessionID = c.req.valid("param").sessionID
-        log.info("SEARCH", { url: c.req.url })
         const session = await Session.get(sessionID)
         return c.json(session)
       },
diff --git a/packages/opencode/src/session/index.ts b/packages/opencode/src/session/index.ts
index 65032de962..8e1ed9dcc9 100644
--- a/packages/opencode/src/session/index.ts
+++ b/packages/opencode/src/session/index.ts
@@ -12,7 +12,7 @@ import { Installation } from "../installation"
 import { Database, NotFoundError, eq, and, gte, isNull, desc, like, inArray, lt } from "../storage/db"
 import { SyncEvent } from "../sync"
 import type { SQL } from "../storage/db"
-import { SessionTable } from "./session.sql"
+import { PartTable, SessionTable } from "./session.sql"
 import { ProjectTable } from "../project/project.sql"
 import { Storage } from "@/storage/storage"
 import { Log } from "../util/log"
@@ -345,6 +345,11 @@ export namespace Session {
       messageID: MessageID
       partID: PartID
     }) => Effect.Effect<PartID>
+    readonly getPart: (input: {
+      sessionID: SessionID
+      messageID: MessageID
+      partID: PartID
+    }) => Effect.Effect<MessageV2.Part | undefined>
     readonly updatePart: <T extends MessageV2.Part>(part: T) => Effect.Effect<T>
     readonly updatePartDelta: (input: {
       sessionID: SessionID
@@ -492,6 +497,29 @@ export namespace Session {
           return part
         }).pipe(Effect.withSpan("Session.updatePart"))
 
+      const getPart: Interface["getPart"] = Effect.fn("Session.getPart")(function* (input) {
+        const row = Database.use((db) =>
+          db
+            .select()
+            .from(PartTable)
+            .where(
+              and(
+                eq(PartTable.session_id, input.sessionID),
+                eq(PartTable.message_id, input.messageID),
+                eq(PartTable.id, input.partID),
+              ),
+            )
+            .get(),
+        )
+        if (!row) return
+        return {
+          ...row.data,
+          id: row.id,
+          sessionID: row.session_id,
+          messageID: row.message_id,
+        } as MessageV2.Part
+      })
+
       const create = Effect.fn("Session.create")(function* (input?: {
         parentID?: SessionID
         title?: string
@@ -675,6 +703,7 @@ export namespace Session {
         removeMessage,
         removePart,
         updatePart,
+        getPart,
         updatePartDelta,
         initialize,
       })
diff --git a/packages/opencode/src/session/message-v2.ts b/packages/opencode/src/session/message-v2.ts
index 78604fbf78..61c159646d 100644
--- a/packages/opencode/src/session/message-v2.ts
+++ b/packages/opencode/src/session/message-v2.ts
@@ -751,16 +751,32 @@ export namespace MessageV2 {
                 ...(differentModel ? {} : { callProviderMetadata: providerMeta(part.metadata) }),
               })
             }
-            if (part.state.status === "error")
-              assistantMessage.parts.push({
-                type: ("tool-" + part.tool) as `tool-${string}`,
-                state: "output-error",
-                toolCallId: part.callID,
-                input: part.state.input,
-                errorText: part.state.error,
-                ...(part.metadata?.providerExecuted ? { providerExecuted: true } : {}),
-                ...(differentModel ? {} : { callProviderMetadata: providerMeta(part.metadata) }),
-              })
+            if (part.state.status === "error") {
+              const output = part.state.metadata?.interrupted === true ? part.state.metadata.output : undefined
+              if (typeof output === "string") {
+                assistantMessage.parts.push({
+                  type: ("tool-" + part.tool) as `tool-${string}`,
+                  state: "output-available",
+                  toolCallId: part.callID,
+                  input: part.state.input,
+                  output,
+                  ...(part.metadata?.providerExecuted ? { providerExecuted: true } : {}),
+                  ...(differentModel ? {} : { callProviderMetadata: providerMeta(part.metadata) }),
+                })
+              } else {
+                assistantMessage.parts.push({
+                  type: ("tool-" + part.tool) as `tool-${string}`,
+                  state: "output-error",
+                  toolCallId: part.callID,
+                  input: part.state.input,
+                  errorText: part.state.error,
+                  ...(part.metadata?.providerExecuted ? { providerExecuted: true } : {}),
+                  ...(differentModel ? {} : { callProviderMetadata: providerMeta(part.metadata) }),
+                })
+              }
+            }
+            // Handle pending/running tool calls to prevent dangling tool_use blocks
+            // Anthropic/Claude APIs require every tool_use to have a corresponding tool_result
             if (part.state.status === "pending" || part.state.status === "running")
               assistantMessage.parts.push({
                 type: ("tool-" + part.tool) as `tool-${string}`,
diff --git a/packages/opencode/src/session/processor.ts b/packages/opencode/src/session/processor.ts
index 8e4225fed3..225961aef0 100644
--- a/packages/opencode/src/session/processor.ts
+++ b/packages/opencode/src/session/processor.ts
@@ -18,6 +18,7 @@ import { SessionStatus } from "./status"
 import { SessionSummary } from "./summary"
 import type { Provider } from "@/provider/provider"
 import { Question } from "@/question"
+import { isRecord } from "@/util/record"
 
 export namespace SessionProcessor {
   const DOOM_LOOP_THRESHOLD = 3
@@ -175,12 +176,22 @@ export namespace SessionProcessor {
               if (ctx.assistantMessage.summary) {
                 throw new Error(`Tool call not allowed while generating summary: ${value.toolName}`)
               }
-              const match = ctx.toolcalls[value.toolCallId]
-              if (!match) return
+              const pointer = ctx.toolcalls[value.toolCallId]
+              const match = yield* session.getPart({
+                partID: pointer.id,
+                messageID: pointer.messageID,
+                sessionID: pointer.sessionID,
+              })
+              if (!match || match.type !== "tool") return
               ctx.toolcalls[value.toolCallId] = yield* session.updatePart({
                 ...match,
                 tool: value.toolName,
-                state: { status: "running", input: value.input, time: { start: Date.now() } },
+                state: {
+                  ...match.state,
+                  status: "running",
+                  input: value.input,
+                  time: { start: Date.now() },
+                },
                 metadata: match.metadata?.providerExecuted
                   ? { ...value.providerMetadata, providerExecuted: true }
                   : value.providerMetadata,
@@ -236,6 +247,7 @@ export namespace SessionProcessor {
             case "tool-error": {
               const match = ctx.toolcalls[value.toolCallId]
               if (!match || match.state.status !== "running") return
+
               yield* session.updatePart({
                 ...match,
                 state: {
@@ -351,7 +363,10 @@ export namespace SessionProcessor {
                 },
                 { text: ctx.currentText.text },
               )).text
-              ctx.currentText.time = { start: Date.now(), end: Date.now() }
+              {
+                const end = Date.now()
+                ctx.currentText.time = { start: ctx.currentText.time?.start ?? end, end }
+              }
               if (value.providerMetadata) ctx.currentText.metadata = value.providerMetadata
               yield* session.updatePart(ctx.currentText)
               ctx.currentText = undefined
@@ -398,19 +413,21 @@ export namespace SessionProcessor {
           }
           ctx.reasoningMap = {}
 
-          const parts = MessageV2.parts(ctx.assistantMessage.id)
-          for (const part of parts) {
-            if (part.type !== "tool" || part.state.status === "completed" || part.state.status === "error") continue
+          for (const part of Object.values(ctx.toolcalls)) {
+            const end = Date.now()
+            const metadata = "metadata" in part.state && isRecord(part.state.metadata) ? part.state.metadata : {}
             yield* session.updatePart({
               ...part,
               state: {
                 ...part.state,
                 status: "error",
                 error: "Tool execution aborted",
-                time: { start: Date.now(), end: Date.now() },
+                metadata: { ...metadata, interrupted: true },
+                time: { start: "time" in part.state ? part.state.time.start : end, end },
               },
             })
           }
+          ctx.toolcalls = {}
           ctx.assistantMessage.time.completed = Date.now()
           yield* session.updateMessage(ctx.assistantMessage)
         })
diff --git a/packages/opencode/src/session/prompt.ts b/packages/opencode/src/session/prompt.ts
index e9bd5bcd56..19f0850ff4 100644
--- a/packages/opencode/src/session/prompt.ts
+++ b/packages/opencode/src/session/prompt.ts
@@ -743,7 +743,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
         } satisfies MessageV2.TextPart)
       })
 
-      const shellImpl = Effect.fn("SessionPrompt.shellImpl")(function* (input: ShellInput, signal: AbortSignal) {
+      const shellImpl = Effect.fn("SessionPrompt.shellImpl")(function* (input: ShellInput) {
         const ctx = yield* InstanceState.context
         const session = yield* sessions.get(input.sessionID)
         if (session.revert) {
@@ -1507,7 +1507,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
                 Effect.promise(() => SystemPrompt.skills(agent)),
                 Effect.promise(() => SystemPrompt.environment(model)),
                 instruction.system().pipe(Effect.orDie),
-                Effect.promise(() => MessageV2.toModelMessages(msgs, model)),
+                MessageV2.toModelMessagesEffect(msgs, model),
               ])
               const system = [...env, ...(skills ? [skills] : []), ...instructions]
               const format = lastUser.format ?? { type: "text" as const }
@@ -1577,7 +1577,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
         function* (input: ShellInput) {
           const s = yield* InstanceState.get(state)
           const runner = getRunner(s.runners, input.sessionID)
-          return yield* runner.startShell((signal) => shellImpl(input, signal))
+          return yield* runner.startShell(shellImpl(input))
         },
       )
 
diff --git a/packages/opencode/src/tool/task.ts b/packages/opencode/src/tool/task.ts
index 73b55a2fba..b97b53bb9f 100644
--- a/packages/opencode/src/tool/task.ts
+++ b/packages/opencode/src/tool/task.ts
@@ -9,6 +9,7 @@ import { SessionPrompt } from "../session/prompt"
 import { Config } from "../config/config"
 import { Permission } from "@/permission"
 import { Effect } from "effect"
+import { Log } from "@/util/log"
 
 const id = "task"
 
diff --git a/packages/opencode/test/effect/runner.test.ts b/packages/opencode/test/effect/runner.test.ts
index 9dc395876e..a91df76ebf 100644
--- a/packages/opencode/test/effect/runner.test.ts
+++ b/packages/opencode/test/effect/runner.test.ts
@@ -250,7 +250,7 @@ describe("Runner", () => {
     Effect.gen(function* () {
       const s = yield* Scope.Scope
       const runner = Runner.make<string>(s)
-      const result = yield* runner.startShell((_signal) => Effect.succeed("shell-done"))
+      const result = yield* runner.startShell(Effect.succeed("shell-done"))
       expect(result).toBe("shell-done")
       expect(runner.busy).toBe(false)
     }),
@@ -264,7 +264,7 @@ describe("Runner", () => {
       const fiber = yield* runner.ensureRunning(Effect.never.pipe(Effect.as("x"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
 
-      const exit = yield* runner.startShell((_s) => Effect.succeed("nope")).pipe(Effect.exit)
+      const exit = yield* runner.startShell(Effect.succeed("nope")).pipe(Effect.exit)
       expect(Exit.isFailure(exit)).toBe(true)
 
       yield* runner.cancel
@@ -279,12 +279,10 @@ describe("Runner", () => {
       const runner = Runner.make<string>(s)
       const gate = yield* Deferred.make<void>()
 
-      const sh = yield* runner
-        .startShell((_signal) => Deferred.await(gate).pipe(Effect.as("first")))
-        .pipe(Effect.forkChild)
+      const sh = yield* runner.startShell(Deferred.await(gate).pipe(Effect.as("first"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
 
-      const exit = yield* runner.startShell((_s) => Effect.succeed("second")).pipe(Effect.exit)
+      const exit = yield* runner.startShell(Effect.succeed("second")).pipe(Effect.exit)
       expect(Exit.isFailure(exit)).toBe(true)
 
       yield* Deferred.succeed(gate, undefined)
@@ -302,37 +300,26 @@ describe("Runner", () => {
         },
       })
 
-      const sh = yield* runner
-        .startShell((signal) =>
-          Effect.promise(
-            () =>
-              new Promise<string>((resolve) => {
-                signal.addEventListener("abort", () => resolve("aborted"), { once: true })
-              }),
-          ),
-        )
-        .pipe(Effect.forkChild)
+      const sh = yield* runner.startShell(Effect.never.pipe(Effect.as("aborted"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
 
-      const exit = yield* runner.startShell((_s) => Effect.succeed("second")).pipe(Effect.exit)
+      const exit = yield* runner.startShell(Effect.succeed("second")).pipe(Effect.exit)
       expect(Exit.isFailure(exit)).toBe(true)
 
       yield* runner.cancel
       const done = yield* Fiber.await(sh)
-      expect(Exit.isSuccess(done)).toBe(true)
+      expect(Exit.isFailure(done)).toBe(true)
     }),
   )
 
   it.live(
-    "cancel interrupts shell that ignores abort signal",
+    "cancel interrupts shell",
     Effect.gen(function* () {
       const s = yield* Scope.Scope
       const runner = Runner.make<string>(s)
       const gate = yield* Deferred.make<void>()
 
-      const sh = yield* runner
-        .startShell((_signal) => Deferred.await(gate).pipe(Effect.as("ignored")))
-        .pipe(Effect.forkChild)
+      const sh = yield* runner.startShell(Deferred.await(gate).pipe(Effect.as("ignored"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
 
       const stop = yield* runner.cancel.pipe(Effect.forkChild)
@@ -356,9 +343,7 @@ describe("Runner", () => {
       const runner = Runner.make<string>(s)
       const gate = yield* Deferred.make<void>()
 
-      const sh = yield* runner
-        .startShell((_signal) => Deferred.await(gate).pipe(Effect.as("shell-result")))
-        .pipe(Effect.forkChild)
+      const sh = yield* runner.startShell(Deferred.await(gate).pipe(Effect.as("shell-result"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
       expect(runner.state._tag).toBe("Shell")
 
@@ -384,9 +369,7 @@ describe("Runner", () => {
       const calls = yield* Ref.make(0)
       const gate = yield* Deferred.make<void>()
 
-      const sh = yield* runner
-        .startShell((_signal) => Deferred.await(gate).pipe(Effect.as("shell")))
-        .pipe(Effect.forkChild)
+      const sh = yield* runner.startShell(Deferred.await(gate).pipe(Effect.as("shell"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
 
       const work = Effect.gen(function* () {
@@ -414,16 +397,7 @@ describe("Runner", () => {
       const runner = Runner.make<string>(s)
       const gate = yield* Deferred.make<void>()
 
-      const sh = yield* runner
-        .startShell((signal) =>
-          Effect.promise(
-            () =>
-              new Promise<string>((resolve) => {
-                signal.addEventListener("abort", () => resolve("aborted"), { once: true })
-              }),
-          ),
-        )
-        .pipe(Effect.forkChild)
+      const sh = yield* runner.startShell(Effect.never.pipe(Effect.as("aborted"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
 
       const run = yield* runner.ensureRunning(Effect.succeed("y")).pipe(Effect.forkChild)
@@ -478,7 +452,7 @@ describe("Runner", () => {
       const runner = Runner.make<string>(s, {
         onBusy: Ref.update(count, (n) => n + 1),
       })
-      yield* runner.startShell((_signal) => Effect.succeed("done"))
+      yield* runner.startShell(Effect.succeed("done"))
       expect(yield* Ref.get(count)).toBe(1)
     }),
   )
@@ -509,9 +483,7 @@ describe("Runner", () => {
       const runner = Runner.make<string>(s)
       const gate = yield* Deferred.make<void>()
 
-      const fiber = yield* runner
-        .startShell((_signal) => Deferred.await(gate).pipe(Effect.as("ok")))
-        .pipe(Effect.forkChild)
+      const fiber = yield* runner.startShell(Deferred.await(gate).pipe(Effect.as("ok"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
       expect(runner.busy).toBe(true)
 
diff --git a/packages/opencode/test/mcp/oauth-callback.test.ts b/packages/opencode/test/mcp/oauth-callback.test.ts
new file mode 100644
index 0000000000..58a4fa8c86
--- /dev/null
+++ b/packages/opencode/test/mcp/oauth-callback.test.ts
@@ -0,0 +1,34 @@
+import { test, expect, describe, afterEach } from "bun:test"
+import { McpOAuthCallback } from "../../src/mcp/oauth-callback"
+import { parseRedirectUri } from "../../src/mcp/oauth-provider"
+
+describe("parseRedirectUri", () => {
+  test("returns defaults when no URI provided", () => {
+    const result = parseRedirectUri()
+    expect(result.port).toBe(19876)
+    expect(result.path).toBe("/mcp/oauth/callback")
+  })
+
+  test("parses port and path from URI", () => {
+    const result = parseRedirectUri("http://127.0.0.1:8080/oauth/callback")
+    expect(result.port).toBe(8080)
+    expect(result.path).toBe("/oauth/callback")
+  })
+
+  test("returns defaults for invalid URI", () => {
+    const result = parseRedirectUri("not-a-valid-url")
+    expect(result.port).toBe(19876)
+    expect(result.path).toBe("/mcp/oauth/callback")
+  })
+})
+
+describe("McpOAuthCallback.ensureRunning", () => {
+  afterEach(async () => {
+    await McpOAuthCallback.stop()
+  })
+
+  test("starts server with custom redirectUri port and path", async () => {
+    await McpOAuthCallback.ensureRunning("http://127.0.0.1:18000/custom/callback")
+    expect(McpOAuthCallback.isRunning()).toBe(true)
+  })
+})
diff --git a/packages/opencode/test/provider/provider.test.ts b/packages/opencode/test/provider/provider.test.ts
index 88e9ea64c9..9cadc391a1 100644
--- a/packages/opencode/test/provider/provider.test.ts
+++ b/packages/opencode/test/provider/provider.test.ts
@@ -6,6 +6,7 @@ import { tmpdir } from "../fixture/fixture"
 import { Global } from "../../src/global"
 import { Instance } from "../../src/project/instance"
 import { Plugin } from "../../src/plugin/index"
+import { ModelsDev } from "../../src/provider/models"
 import { Provider } from "../../src/provider/provider"
 import { ProviderID, ModelID } from "../../src/provider/schema"
 import { Filesystem } from "../../src/util/filesystem"
@@ -1823,6 +1824,73 @@ test("custom model inherits api.url from models.dev provider", async () => {
   })
 })
 
+test("mode cost preserves over-200k pricing from base model", () => {
+  const provider = {
+    id: "openai",
+    name: "OpenAI",
+    env: [],
+    api: "https://api.openai.com/v1",
+    models: {
+      "gpt-5.4": {
+        id: "gpt-5.4",
+        name: "GPT-5.4",
+        family: "gpt",
+        release_date: "2026-03-05",
+        attachment: true,
+        reasoning: true,
+        temperature: false,
+        tool_call: true,
+        cost: {
+          input: 2.5,
+          output: 15,
+          cache_read: 0.25,
+          context_over_200k: {
+            input: 5,
+            output: 22.5,
+            cache_read: 0.5,
+          },
+        },
+        limit: {
+          context: 1_050_000,
+          input: 922_000,
+          output: 128_000,
+        },
+        experimental: {
+          modes: {
+            fast: {
+              cost: {
+                input: 5,
+                output: 30,
+                cache_read: 0.5,
+              },
+              provider: {
+                body: {
+                  service_tier: "priority",
+                },
+              },
+            },
+          },
+        },
+      },
+    },
+  } as ModelsDev.Provider
+
+  const model = Provider.fromModelsDevProvider(provider).models["gpt-5.4-fast"]
+  expect(model.cost.input).toEqual(5)
+  expect(model.cost.output).toEqual(30)
+  expect(model.cost.cache.read).toEqual(0.5)
+  expect(model.cost.cache.write).toEqual(0)
+  expect(model.options["serviceTier"]).toEqual("priority")
+  expect(model.cost.experimentalOver200K).toEqual({
+    input: 5,
+    output: 22.5,
+    cache: {
+      read: 0.5,
+      write: 0,
+    },
+  })
+})
+
 test("model variants are generated for reasoning models", async () => {
   await using tmp = await tmpdir({
     init: async (dir) => {
diff --git a/packages/opencode/test/session/message-v2.test.ts b/packages/opencode/test/session/message-v2.test.ts
index 3634d6fb7e..64a5d3e4b2 100644
--- a/packages/opencode/test/session/message-v2.test.ts
+++ b/packages/opencode/test/session/message-v2.test.ts
@@ -570,6 +570,81 @@ describe("session.message-v2.toModelMessage", () => {
     ])
   })
 
+  test("forwards partial bash output for aborted tool calls", async () => {
+    const userID = "m-user"
+    const assistantID = "m-assistant"
+    const output = [
+      "31403",
+      "12179",
+      "4575",
+      "",
+      "<bash_metadata>",
+      "User aborted the command",
+      "</bash_metadata>",
+    ].join("\n")
+
+    const input: MessageV2.WithParts[] = [
+      {
+        info: userInfo(userID),
+        parts: [
+          {
+            ...basePart(userID, "u1"),
+            type: "text",
+            text: "run tool",
+          },
+        ] as MessageV2.Part[],
+      },
+      {
+        info: assistantInfo(assistantID, userID),
+        parts: [
+          {
+            ...basePart(assistantID, "a1"),
+            type: "tool",
+            callID: "call-1",
+            tool: "bash",
+            state: {
+              status: "error",
+              input: { command: "for i in {1..20}; do print -- $RANDOM; sleep 1; done" },
+              error: "Tool execution aborted",
+              metadata: { interrupted: true, output },
+              time: { start: 0, end: 1 },
+            },
+          },
+        ] as MessageV2.Part[],
+      },
+    ]
+
+    expect(await MessageV2.toModelMessages(input, model)).toStrictEqual([
+      {
+        role: "user",
+        content: [{ type: "text", text: "run tool" }],
+      },
+      {
+        role: "assistant",
+        content: [
+          {
+            type: "tool-call",
+            toolCallId: "call-1",
+            toolName: "bash",
+            input: { command: "for i in {1..20}; do print -- $RANDOM; sleep 1; done" },
+            providerExecuted: undefined,
+          },
+        ],
+      },
+      {
+        role: "tool",
+        content: [
+          {
+            type: "tool-result",
+            toolCallId: "call-1",
+            toolName: "bash",
+            output: { type: "text", value: output },
+          },
+        ],
+      },
+    ])
+  })
+
   test("filters assistant messages with non-abort errors", async () => {
     const assistantID = "m-assistant"
 
diff --git a/packages/opencode/test/session/processor-effect.test.ts b/packages/opencode/test/session/processor-effect.test.ts
index 86149272bc..a3b335b6da 100644
--- a/packages/opencode/test/session/processor-effect.test.ts
+++ b/packages/opencode/test/session/processor-effect.test.ts
@@ -21,7 +21,7 @@ import { Log } from "../../src/util/log"
 import * as CrossSpawnSpawner from "../../src/effect/cross-spawn-spawner"
 import { provideTmpdirServer } from "../fixture/fixture"
 import { testEffect } from "../lib/effect"
-import { reply, TestLLMServer } from "../lib/llm-server"
+import { raw, reply, TestLLMServer } from "../lib/llm-server"
 
 Log.init({ print: false })
 
@@ -218,6 +218,93 @@ it.live("session.processor effect tests capture llm input cleanly", () =>
   ),
 )
 
+it.live("session.processor effect tests preserve text start time", () =>
+  provideTmpdirServer(
+    ({ dir, llm }) =>
+      Effect.gen(function* () {
+        const gate = defer<void>()
+        const { processors, session, provider } = yield* boot()
+
+        yield* llm.push(
+          raw({
+            head: [
+              {
+                id: "chatcmpl-test",
+                object: "chat.completion.chunk",
+                choices: [{ delta: { role: "assistant" } }],
+              },
+              {
+                id: "chatcmpl-test",
+                object: "chat.completion.chunk",
+                choices: [{ delta: { content: "hello" } }],
+              },
+            ],
+            wait: gate.promise,
+            tail: [
+              {
+                id: "chatcmpl-test",
+                object: "chat.completion.chunk",
+                choices: [{ delta: {}, finish_reason: "stop" }],
+              },
+            ],
+          }),
+        )
+
+        const chat = yield* session.create({})
+        const parent = yield* user(chat.id, "hi")
+        const msg = yield* assistant(chat.id, parent.id, path.resolve(dir))
+        const mdl = yield* provider.getModel(ref.providerID, ref.modelID)
+        const handle = yield* processors.create({
+          assistantMessage: msg,
+          sessionID: chat.id,
+          model: mdl,
+        })
+
+        const run = yield* handle
+          .process({
+            user: {
+              id: parent.id,
+              sessionID: chat.id,
+              role: "user",
+              time: parent.time,
+              agent: parent.agent,
+              model: { providerID: ref.providerID, modelID: ref.modelID },
+            } satisfies MessageV2.User,
+            sessionID: chat.id,
+            model: mdl,
+            agent: agent(),
+            system: [],
+            messages: [{ role: "user", content: "hi" }],
+            tools: {},
+          })
+          .pipe(Effect.forkChild)
+
+        yield* Effect.promise(async () => {
+          const stop = Date.now() + 500
+          while (Date.now() < stop) {
+            const text = MessageV2.parts(msg.id).find((part): part is MessageV2.TextPart => part.type === "text")
+            if (text?.time?.start) return
+            await Bun.sleep(10)
+          }
+          throw new Error("timed out waiting for text part")
+        })
+        yield* Effect.sleep("20 millis")
+        gate.resolve()
+
+        const exit = yield* Fiber.await(run)
+        const text = MessageV2.parts(msg.id).find((part): part is MessageV2.TextPart => part.type === "text")
+
+        expect(Exit.isSuccess(exit)).toBe(true)
+        expect(text?.text).toBe("hello")
+        expect(text?.time?.start).toBeDefined()
+        expect(text?.time?.end).toBeDefined()
+        if (!text?.time?.start || !text.time.end) return
+        expect(text.time.start).toBeLessThan(text.time.end)
+      }),
+    { git: true, config: (url) => providerCfg(url) },
+  ),
+)
+
 it.live("session.processor effect tests stop after token overflow requests compaction", () =>
   provideTmpdirServer(
     ({ dir, llm }) =>
@@ -604,6 +691,7 @@ it.live("session.processor effect tests mark pending tools as aborted on cleanup
         expect(call?.state.status).toBe("error")
         if (call?.state.status === "error") {
           expect(call.state.error).toBe("Tool execution aborted")
+          expect(call.state.metadata?.interrupted).toBe(true)
           expect(call.state.time.end).toBeDefined()
         }
       }),
diff --git a/packages/plugin/package.json b/packages/plugin/package.json
index 0b52bbd47c..adfee9c65c 100644
--- a/packages/plugin/package.json
+++ b/packages/plugin/package.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "@opencode-ai/plugin",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/sdk/js/package.json b/packages/sdk/js/package.json
index a3aa709a71..3dbab2c54a 100644
--- a/packages/sdk/js/package.json
+++ b/packages/sdk/js/package.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "@opencode-ai/sdk",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/sdk/js/src/v2/gen/types.gen.ts b/packages/sdk/js/src/v2/gen/types.gen.ts
index 4f226e60cf..38f4db09a3 100644
--- a/packages/sdk/js/src/v2/gen/types.gen.ts
+++ b/packages/sdk/js/src/v2/gen/types.gen.ts
@@ -1375,6 +1375,10 @@ export type McpOAuthConfig = {
    * OAuth scopes to request during authorization
    */
   scope?: string
+  /**
+   * OAuth redirect URI (default: http://127.0.0.1:19876/mcp/oauth/callback).
+   */
+  redirectUri?: string
 }
 
 export type McpRemoteConfig = {
diff --git a/packages/sdk/js/src/v2/index.ts b/packages/sdk/js/src/v2/index.ts
index d514784bc2..9615eacc7a 100644
--- a/packages/sdk/js/src/v2/index.ts
+++ b/packages/sdk/js/src/v2/index.ts
@@ -6,7 +6,6 @@ import { createOpencodeServer } from "./server.js"
 import type { ServerOptions } from "./server.js"
 
 export * as data from "./data.js"
-import * as data from "./data.js"
 
 export async function createOpencode(options?: ServerOptions) {
   const server = await createOpencodeServer({
diff --git a/packages/sdk/openapi.json b/packages/sdk/openapi.json
index a0672df2d7..366bc1fc79 100644
--- a/packages/sdk/openapi.json
+++ b/packages/sdk/openapi.json
@@ -10882,6 +10882,10 @@
           "scope": {
             "description": "OAuth scopes to request during authorization",
             "type": "string"
+          },
+          "redirectUri": {
+            "description": "OAuth redirect URI (default: http://127.0.0.1:19876/mcp/oauth/callback).",
+            "type": "string"
           }
         },
         "additionalProperties": false
diff --git a/packages/slack/package.json b/packages/slack/package.json
index 4e3e54800b..d23b740cda 100644
--- a/packages/slack/package.json
+++ b/packages/slack/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/slack",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/ui/package.json b/packages/ui/package.json
index 8de6ea0d43..01c6fae869 100644
--- a/packages/ui/package.json
+++ b/packages/ui/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/ui",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "type": "module",
   "license": "MIT",
   "exports": {
diff --git a/packages/util/package.json b/packages/util/package.json
index 105098595e..53c170f144 100644
--- a/packages/util/package.json
+++ b/packages/util/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/util",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "private": true,
   "type": "module",
   "license": "MIT",
diff --git a/packages/web/package.json b/packages/web/package.json
index de36ca6574..d7f627c57a 100644
--- a/packages/web/package.json
+++ b/packages/web/package.json
@@ -2,7 +2,7 @@
   "name": "@opencode-ai/web",
   "type": "module",
   "license": "MIT",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "scripts": {
     "dev": "astro dev",
     "dev:remote": "VITE_API_URL=https://api.opencode.ai astro dev",
diff --git a/sdks/vscode/package.json b/sdks/vscode/package.json
index afe506d0ea..1d0472d787 100644
--- a/sdks/vscode/package.json
+++ b/sdks/vscode/package.json
@@ -2,7 +2,7 @@
   "name": "opencode",
   "displayName": "opencode",
   "description": "opencode for VS Code",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "publisher": "sst-dev",
   "repository": {
     "type": "git",