feat(mcp): register lsp tier-1 stdio MCP server

src/cli/doctor/checks/tools-lsp.ts

@@ -1,9 +1,11 @@
-import { getAllServers } from "../../../tools/lsp/config"
+import { createLspMcpConfig } from "../../../mcp/lsp"
 
 export function getInstalledLspServers(): Array<{ id: string; extensions: string[] }> {
-  const servers = getAllServers()
+  const lspMcpConfig = createLspMcpConfig()
 
-  return servers
-    .filter((s) => s.installed && !s.disabled)
-    .map((s) => ({ id: s.id, extensions: s.extensions }))
+  if (!lspMcpConfig) {
+    return []
+  }
+
+  return [{ id: "lsp-tools-mcp", extensions: ["*"] }]
 }

src/mcp/index.ts

@@ -1,6 +1,7 @@
 import { createWebsearchConfig } from "./websearch"
 import { context7 } from "./context7"
 import { grep_app } from "./grep-app"
+import { createLspMcpConfig, type LocalMcpConfig } from "./lsp"
 import type { OhMyOpenCodeConfig } from "../config/schema"
 
 export { McpNameSchema, type McpName } from "./types"
@@ -13,8 +14,10 @@ type RemoteMcpConfig = {
   oauth?: false
 }
 
+type BuiltinMcpConfig = RemoteMcpConfig | LocalMcpConfig
+
 export function createBuiltinMcps(disabledMcps: string[] = [], config?: OhMyOpenCodeConfig) {
-  const mcps: Record<string, RemoteMcpConfig> = {}
+  const mcps: Record<string, BuiltinMcpConfig> = {}
 
   if (!disabledMcps.includes("websearch")) {
     const websearchConfig = createWebsearchConfig(config?.websearch)
@@ -31,5 +34,12 @@ export function createBuiltinMcps(disabledMcps: string[] = [], config?: OhMyOpen
     mcps.grep_app = grep_app
   }
 
+  if (!disabledMcps.includes("lsp")) {
+    const lspConfig = createLspMcpConfig()
+    if (lspConfig) {
+      mcps.lsp = lspConfig
+    }
+  }
+
   return mcps
 }

src/mcp/lsp.ts

@@ -0,0 +1,48 @@
+import { existsSync } from "node:fs"
+import { resolve } from "node:path"
+import { fileURLToPath } from "node:url"
+
+const SUBMODULE_REL = "vendor/lsp-tools-mcp"
+const CLI_REL = "dist/cli.js"
+const PROJECT_LSP_CONFIG = ".opencode/lsp.json"
+
+export type LocalMcpConfig = {
+  type: "local"
+  command: string[]
+  enabled: boolean
+  environment?: Record<string, string>
+}
+
+function resolveLspCliPathCandidates(): string[] {
+  const candidates: string[] = []
+
+  try {
+    const currentFilePath = fileURLToPath(import.meta.url)
+    candidates.push(resolve(currentFilePath, "..", "..", "..", SUBMODULE_REL, CLI_REL))
+    candidates.push(resolve(currentFilePath, "..", "..", SUBMODULE_REL, CLI_REL))
+    candidates.push(resolve(currentFilePath, "..", SUBMODULE_REL, CLI_REL))
+  } catch {
+    // ignore and fall through to cwd-based candidate
+  }
+
+  candidates.push(resolve(process.cwd(), SUBMODULE_REL, CLI_REL))
+
+  return candidates
+}
+
+export function createLspMcpConfig(): LocalMcpConfig | null {
+  const cliPath = resolveLspCliPathCandidates().find((candidatePath) => existsSync(candidatePath))
+
+  if (!cliPath) {
+    return null
+  }
+
+  return {
+    type: "local",
+    command: ["node", cliPath, "mcp"],
+    enabled: true,
+    environment: {
+      LSP_TOOLS_MCP_PROJECT_CONFIG: PROJECT_LSP_CONFIG,
+    },
+  }
+}

src/mcp/types.ts

@@ -1,6 +1,6 @@
 import { z } from "zod"
 
-export const McpNameSchema = z.enum(["websearch", "context7", "grep_app"])
+export const McpNameSchema = z.enum(["websearch", "context7", "grep_app", "lsp"])
 
 export type McpName = z.infer<typeof McpNameSchema>
 

src/mcp/zauc-mocks-mcp-index/index.test.ts

@@ -14,6 +14,7 @@ describe("createBuiltinMcps", () => {
     expect(result.websearch).toBeDefined()
     expect(result.context7).toBeDefined()
     expect(result.grep_app).toBeDefined()
+    expect(result.lsp).toBeDefined()
   })
 
   test("should filter out disabled MCPs", () => {
@@ -27,11 +28,12 @@ describe("createBuiltinMcps", () => {
     expect(result.websearch).toBeUndefined()
     expect(result.context7).toBeDefined()
     expect(result.grep_app).toBeDefined()
+    expect(result.lsp).toBeDefined()
   })
 
   test("should return empty array when all MCPs are disabled", () => {
     // given - disable all known MCPs
-    const disabledMcps = ["websearch", "context7", "grep_app"]
+    const disabledMcps = ["websearch", "context7", "grep_app", "lsp"]
 
     // when
     const result = createBuiltinMcps(disabledMcps)
@@ -41,6 +43,7 @@ describe("createBuiltinMcps", () => {
     expect(remainingMcpNames).not.toContain("websearch")
     expect(remainingMcpNames).not.toContain("context7")
     expect(remainingMcpNames).not.toContain("grep_app")
+    expect(remainingMcpNames).not.toContain("lsp")
     expect(remainingMcpNames).toEqual([])
   })
 })