diff --git a/bun.lock b/bun.lock
index 85515308..db59359b 100644
--- a/bun.lock
+++ b/bun.lock
@@ -10,7 +10,7 @@
     },
     "packages/function": {
       "name": "@opencode/function",
-      "version": "0.3.128",
+      "version": "0.3.129",
       "dependencies": {
         "@ai-sdk/anthropic": "2.0.0",
         "@ai-sdk/openai": "2.0.2",
@@ -30,7 +30,7 @@
     },
     "packages/opencode": {
       "name": "opencode",
-      "version": "0.3.128",
+      "version": "0.3.129",
       "bin": {
         "opencode": "./bin/opencode",
       },
@@ -83,7 +83,7 @@
     },
     "packages/plugin": {
       "name": "@opencode-ai/plugin",
-      "version": "0.3.128",
+      "version": "0.3.129",
       "dependencies": {
         "@opencode-ai/sdk": "workspace:*",
       },
@@ -95,7 +95,7 @@
     },
     "packages/sdk/js": {
       "name": "@opencode-ai/sdk",
-      "version": "0.3.128",
+      "version": "0.3.129",
       "devDependencies": {
         "@hey-api/openapi-ts": "0.80.1",
         "@tsconfig/node22": "catalog:",
@@ -104,7 +104,7 @@
     },
     "packages/web": {
       "name": "@opencode/web",
-      "version": "0.3.128",
+      "version": "0.3.129",
       "dependencies": {
         "@astrojs/cloudflare": "^12.5.4",
         "@astrojs/markdown-remark": "6.3.1",
diff --git a/packages/plugin/src/index.ts b/packages/plugin/src/index.ts
index be9822ee..d0d484a0 100644
--- a/packages/plugin/src/index.ts
+++ b/packages/plugin/src/index.ts
@@ -1,10 +1,10 @@
 import type { Event, createOpencodeClient, App, Model, Provider, Permission, UserMessage, Part } from "@opencode-ai/sdk"
-import { $ } from "bun"
+import type { BunShell } from "./shell"
 
 export type PluginInput = {
   client: ReturnType<typeof createOpencodeClient>
   app: App
-  $: $
+  $: BunShell
 }
 export type Plugin = (input: PluginInput) => Promise<Hooks>
 
diff --git a/packages/plugin/src/shell.ts b/packages/plugin/src/shell.ts
new file mode 100644
index 00000000..56733fdb
--- /dev/null
+++ b/packages/plugin/src/shell.ts
@@ -0,0 +1,136 @@
+export type ShellFunction = (input: Uint8Array) => Uint8Array
+
+export type ShellExpression =
+  | { toString(): string }
+  | Array<ShellExpression>
+  | string
+  | { raw: string }
+  | ReadableStream
+
+export interface BunShell {
+  (strings: TemplateStringsArray, ...expressions: ShellExpression[]): BunShellPromise
+
+  /**
+   * Perform bash-like brace expansion on the given pattern.
+   * @param pattern - Brace pattern to expand
+   */
+  braces(pattern: string): string[]
+
+  /**
+   * Escape strings for input into shell commands.
+   */
+  escape(input: string): string
+
+  /**
+   * Change the default environment variables for shells created by this instance.
+   */
+  env(newEnv?: Record<string, string | undefined>): BunShell
+
+  /**
+   * Default working directory to use for shells created by this instance.
+   */
+  cwd(newCwd?: string): BunShell
+
+  /**
+   * Configure the shell to not throw an exception on non-zero exit codes.
+   */
+  nothrow(): BunShell
+
+  /**
+   * Configure whether or not the shell should throw an exception on non-zero exit codes.
+   */
+  throws(shouldThrow: boolean): BunShell
+}
+
+export interface BunShellPromise extends Promise<BunShellOutput> {
+  readonly stdin: WritableStream
+
+  /**
+   * Change the current working directory of the shell.
+   */
+  cwd(newCwd: string): this
+
+  /**
+   * Set environment variables for the shell.
+   */
+  env(newEnv: Record<string, string> | undefined): this
+
+  /**
+   * By default, the shell will write to the current process's stdout and stderr, as well as buffering that output.
+   * This configures the shell to only buffer the output.
+   */
+  quiet(): this
+
+  /**
+   * Read from stdout as a string, line by line
+   * Automatically calls quiet() to disable echoing to stdout.
+   */
+  lines(): AsyncIterable<string>
+
+  /**
+   * Read from stdout as a string.
+   * Automatically calls quiet() to disable echoing to stdout.
+   */
+  text(encoding?: BufferEncoding): Promise<string>
+
+  /**
+   * Read from stdout as a JSON object
+   * Automatically calls quiet()
+   */
+  json(): Promise<any>
+
+  /**
+   * Read from stdout as an ArrayBuffer
+   * Automatically calls quiet()
+   */
+  arrayBuffer(): Promise<ArrayBuffer>
+
+  /**
+   * Read from stdout as a Blob
+   * Automatically calls quiet()
+   */
+  blob(): Promise<Blob>
+
+  /**
+   * Configure the shell to not throw an exception on non-zero exit codes.
+   */
+  nothrow(): this
+
+  /**
+   * Configure whether or not the shell should throw an exception on non-zero exit codes.
+   */
+  throws(shouldThrow: boolean): this
+}
+
+export interface BunShellOutput {
+  readonly stdout: Buffer
+  readonly stderr: Buffer
+  readonly exitCode: number
+
+  /**
+   * Read from stdout as a string
+   */
+  text(encoding?: BufferEncoding): string
+
+  /**
+   * Read from stdout as a JSON object
+   */
+  json(): any
+
+  /**
+   * Read from stdout as an ArrayBuffer
+   */
+  arrayBuffer(): ArrayBuffer
+
+  /**
+   * Read from stdout as an Uint8Array
+   */
+  bytes(): Uint8Array
+
+  /**
+   * Read from stdout as a Blob
+   */
+  blob(): Blob
+}
+
+export type BunShellError = Error & BunShellOutput
diff --git a/script/publish.ts b/script/publish.ts
index 066f90e4..7a48749d 100755
--- a/script/publish.ts
+++ b/script/publish.ts
@@ -27,6 +27,7 @@ for (const file of pkgjsons) {
   console.log("updated:", file)
   await Bun.file(file).write(pkg)
 }
+await $`bun install`
 
 console.log("\n=== opencode ===\n")
 await import(`../packages/opencode/script/publish.ts`)