diff --git a/packages/opencode/src/flag/flag.ts b/packages/opencode/src/flag/flag.ts
index 0d8bffa9ec..1bc06cd963 100644
--- a/packages/opencode/src/flag/flag.ts
+++ b/packages/opencode/src/flag/flag.ts
@@ -5,6 +5,7 @@ export namespace Flag {
   export const OPENCODE_DISABLE_AUTOUPDATE = truthy("OPENCODE_DISABLE_AUTOUPDATE")
   export const OPENCODE_PERMISSION = process.env["OPENCODE_PERMISSION"]
   export const OPENCODE_DISABLE_DEFAULT_PLUGINS = truthy("OPENCODE_DISABLE_DEFAULT_PLUGINS")
+  export const OPENCODE_DISABLE_LSP_DOWNLOAD = truthy("OPENCODE_DISABLE_LSP_DOWNLOAD")
 
   function truthy(key: string) {
     const value = process.env[key]?.toLowerCase()
diff --git a/packages/opencode/src/lsp/server.ts b/packages/opencode/src/lsp/server.ts
index 4a1ddca4e6..46c52ec459 100644
--- a/packages/opencode/src/lsp/server.ts
+++ b/packages/opencode/src/lsp/server.ts
@@ -7,6 +7,7 @@ import { BunProc } from "../bun"
 import { $ } from "bun"
 import fs from "fs/promises"
 import { Filesystem } from "../util/filesystem"
+import { Flag } from "../flag/flag"
 
 export namespace LSPServer {
   const log = Log.create({ service: "lsp.server" })
@@ -95,6 +96,7 @@ export namespace LSPServer {
           "vue-language-server.js",
         )
         if (!(await Bun.file(js).exists())) {
+          if (Flag.OPENCODE_DISABLE_LSP_DOWNLOAD) return
           await Bun.spawn([BunProc.which(), "install", "@vue/language-server"], {
             cwd: Global.Path.bin,
             env: {
@@ -148,6 +150,7 @@ export namespace LSPServer {
       if (!eslint) return
       const serverPath = path.join(Global.Path.bin, "vscode-eslint", "server", "out", "eslintServer.js")
       if (!(await Bun.file(serverPath).exists())) {
+        if (Flag.OPENCODE_DISABLE_LSP_DOWNLOAD) return
         log.info("downloading and building VS Code ESLint server")
         const response = await fetch("https://github.com/microsoft/vscode-eslint/archive/refs/heads/main.zip")
         if (!response.ok) return
@@ -200,6 +203,8 @@ export namespace LSPServer {
       })
       if (!bin) {
         if (!Bun.which("go")) return
+        if (Flag.OPENCODE_DISABLE_LSP_DOWNLOAD) return
+
         log.info("installing gopls")
         const proc = Bun.spawn({
           cmd: ["go", "install", "golang.org/x/tools/gopls@latest"],
@@ -241,6 +246,7 @@ export namespace LSPServer {
           log.info("Ruby not found, please install Ruby first")
           return
         }
+        if (Flag.OPENCODE_DISABLE_LSP_DOWNLOAD) return
         log.info("installing ruby-lsp")
         const proc = Bun.spawn({
           cmd: ["gem", "install", "ruby-lsp", "--bindir", Global.Path.bin],
@@ -276,6 +282,7 @@ export namespace LSPServer {
       if (!binary) {
         const js = path.join(Global.Path.bin, "node_modules", "pyright", "dist", "pyright-langserver.js")
         if (!(await Bun.file(js).exists())) {
+          if (Flag.OPENCODE_DISABLE_LSP_DOWNLOAD) return
           await Bun.spawn([BunProc.which(), "install", "pyright"], {
             cwd: Global.Path.bin,
             env: {
@@ -323,6 +330,7 @@ export namespace LSPServer {
             return
           }
 
+          if (Flag.OPENCODE_DISABLE_LSP_DOWNLOAD) return
           log.info("downloading elixir-ls from GitHub releases")
 
           const response = await fetch("https://github.com/elixir-lsp/elixir-ls/archive/refs/heads/master.zip")
@@ -372,6 +380,7 @@ export namespace LSPServer {
           return
         }
 
+        if (Flag.OPENCODE_DISABLE_LSP_DOWNLOAD) return
         log.info("downloading zls from GitHub releases")
 
         const releaseResponse = await fetch("https://api.github.com/repos/zigtools/zls/releases/latest")
@@ -475,6 +484,7 @@ export namespace LSPServer {
           return
         }
 
+        if (Flag.OPENCODE_DISABLE_LSP_DOWNLOAD) return
         log.info("installing csharp-ls via dotnet tool")
         const proc = Bun.spawn({
           cmd: ["dotnet", "tool", "install", "csharp-ls", "--tool-path", Global.Path.bin],
@@ -527,6 +537,7 @@ export namespace LSPServer {
         PATH: process.env["PATH"] + ":" + Global.Path.bin,
       })
       if (!bin) {
+        if (Flag.OPENCODE_DISABLE_LSP_DOWNLOAD) return
         log.info("downloading clangd from GitHub releases")
 
         const releaseResponse = await fetch("https://api.github.com/repos/clangd/clangd/releases/latest")