diff --git a/packages/omo-codex/plugin/components/lsp/scripts/build-lsp-tools.mjs b/packages/omo-codex/plugin/components/lsp/scripts/build-lsp-tools.mjs
new file mode 100644
index 000000000..d93efc598
--- /dev/null
+++ b/packages/omo-codex/plugin/components/lsp/scripts/build-lsp-tools.mjs
@@ -0,0 +1,42 @@
+#!/usr/bin/env node
+// Build the repository-level lsp-tools-mcp package used by codex-lsp.
+import { execSync } from "node:child_process";
+import { existsSync, statSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const lspToolsDir = join(__dirname, "..", "..", "..", "..", "..", "lsp-tools-mcp");
+const packageJson = join(lspToolsDir, "package.json");
+const requiredOutputs = [
+	join(lspToolsDir, "dist", "cli.js"),
+	join(lspToolsDir, "dist", "tools.js"),
+	join(lspToolsDir, "dist", "lsp", "manager.js"),
+];
+const force = process.argv.includes("--force");
+
+if (!force && isBuildFresh(packageJson, requiredOutputs)) {
+	process.exit(0);
+}
+
+if (!existsSync(packageJson)) {
+	console.error(
+		`lsp-tools-mcp package metadata is missing at ${packageJson}; build packages/lsp-tools-mcp before codex-lsp`,
+	);
+	process.exit(1);
+}
+
+console.log("Installing repository lsp-tools-mcp dependencies...");
+execSync("npm ci", { cwd: lspToolsDir, stdio: "inherit" });
+
+console.log("Building repository lsp-tools-mcp...");
+execSync("npm run build", { cwd: lspToolsDir, stdio: "inherit" });
+
+console.log("Done.");
+
+function isBuildFresh(inputPath, outputPaths) {
+	if (!existsSync(inputPath)) return false;
+	if (outputPaths.some((path) => !existsSync(path))) return false;
+	const inputMtime = statSync(inputPath).mtimeMs;
+	return outputPaths.every((path) => statSync(path).mtimeMs >= inputMtime);
+}
diff --git a/packages/omo-codex/plugin/components/lsp/scripts/build-lsp-tools.test.mjs b/packages/omo-codex/plugin/components/lsp/scripts/build-lsp-tools.test.mjs
new file mode 100644
index 000000000..6b24df49e
--- /dev/null
+++ b/packages/omo-codex/plugin/components/lsp/scripts/build-lsp-tools.test.mjs
@@ -0,0 +1,86 @@
+import assert from "node:assert/strict";
+import { chmod, copyFile, mkdir, mkdtemp, readFile, utimes, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { spawnSync } from "node:child_process";
+import test from "node:test";
+
+async function makeFixture() {
+	const root = await mkdtemp(join(tmpdir(), "codex-lsp-build-"));
+	await mkdir(join(root, "packages", "omo-codex", "plugin", "components", "lsp", "scripts"), { recursive: true });
+	await mkdir(join(root, "packages", "lsp-tools-mcp", "dist"), { recursive: true });
+	await copyFile(
+		new URL("./build-lsp-tools.mjs", import.meta.url),
+		join(root, "packages", "omo-codex", "plugin", "components", "lsp", "scripts", "build-lsp-tools.mjs"),
+	);
+	await writeFile(join(root, "packages", "lsp-tools-mcp", "package.json"), "{}\n");
+	await writeFile(join(root, "packages", "lsp-tools-mcp", "dist", "cli.js"), "cli\n");
+	const fakeBin = join(root, "bin");
+	await mkdir(fakeBin, { recursive: true });
+	const npmLog = join(root, "npm.log");
+	await writeFile(
+		join(fakeBin, "npm"),
+		`#!/usr/bin/env node\nconst { appendFileSync } = require("node:fs");\nappendFileSync(${JSON.stringify(npmLog)}, process.argv.slice(2).join(" ") + "\\n");\n`,
+	);
+	await chmod(join(fakeBin, "npm"), 0o755);
+	return { root, npmLog, script: join(root, "packages", "omo-codex", "plugin", "components", "lsp", "scripts", "build-lsp-tools.mjs"), fakeBin };
+}
+
+function runScript(script, fakeBin, args = []) {
+	return spawnSync(process.execPath, [script, ...args], {
+		encoding: "utf8",
+		env: { ...process.env, PATH: `${fakeBin}:${process.env.PATH ?? ""}` },
+	});
+}
+
+test("#given dist cli exists but required hook outputs are missing #when bootstrapping #then it rebuilds", async () => {
+	// given
+	const fixture = await makeFixture();
+
+	// when
+	const result = runScript(fixture.script, fixture.fakeBin);
+
+	// then
+	assert.equal(result.status, 0);
+	assert.match(await readFile(fixture.npmLog, "utf8"), /ci\nrun build\n/u);
+});
+
+test("#given package metadata is newer than required outputs #when bootstrapping #then it rebuilds", async () => {
+	// given
+	const fixture = await makeFixture();
+	await mkdir(join(fixture.root, "packages", "lsp-tools-mcp", "dist", "lsp"), { recursive: true });
+	await writeFile(join(fixture.root, "packages", "lsp-tools-mcp", "dist", "lsp", "manager.js"), "manager\n");
+	await writeFile(join(fixture.root, "packages", "lsp-tools-mcp", "dist", "tools.js"), "tools\n");
+	const older = new Date("2026-01-01T00:00:00.000Z");
+	const newer = new Date("2026-01-02T00:00:00.000Z");
+	for (const path of [
+		join(fixture.root, "packages", "lsp-tools-mcp", "dist", "cli.js"),
+		join(fixture.root, "packages", "lsp-tools-mcp", "dist", "tools.js"),
+		join(fixture.root, "packages", "lsp-tools-mcp", "dist", "lsp", "manager.js"),
+	]) {
+		await utimes(path, older, older);
+	}
+	await utimes(join(fixture.root, "packages", "lsp-tools-mcp", "package.json"), newer, newer);
+
+	// when
+	const result = runScript(fixture.script, fixture.fakeBin);
+
+	// then
+	assert.equal(result.status, 0);
+	assert.match(await readFile(fixture.npmLog, "utf8"), /ci\nrun build\n/u);
+});
+
+test("#given force flag #when bootstrapping #then it rebuilds even when dist exists", async () => {
+	// given
+	const fixture = await makeFixture();
+	await mkdir(join(fixture.root, "packages", "lsp-tools-mcp", "dist", "lsp"), { recursive: true });
+	await writeFile(join(fixture.root, "packages", "lsp-tools-mcp", "dist", "lsp", "manager.js"), "manager\n");
+	await writeFile(join(fixture.root, "packages", "lsp-tools-mcp", "dist", "tools.js"), "tools\n");
+
+	// when
+	const result = runScript(fixture.script, fixture.fakeBin, ["--force"]);
+
+	// then
+	assert.equal(result.status, 0);
+	assert.match(await readFile(fixture.npmLog, "utf8"), /ci\nrun build\n/u);
+});
diff --git a/packages/omo-codex/plugin/components/lsp/scripts/clean-dist.mjs b/packages/omo-codex/plugin/components/lsp/scripts/clean-dist.mjs
new file mode 100644
index 000000000..630de3ab9
--- /dev/null
+++ b/packages/omo-codex/plugin/components/lsp/scripts/clean-dist.mjs
@@ -0,0 +1,5 @@
+#!/usr/bin/env node
+import { rm } from "node:fs/promises";
+import { fileURLToPath } from "node:url";
+
+await rm(fileURLToPath(new URL("../dist/", import.meta.url)), { recursive: true, force: true });
diff --git a/packages/omo-codex/plugin/components/lsp/scripts/test.mjs b/packages/omo-codex/plugin/components/lsp/scripts/test.mjs
new file mode 100644
index 000000000..3956f62ec
--- /dev/null
+++ b/packages/omo-codex/plugin/components/lsp/scripts/test.mjs
@@ -0,0 +1,8 @@
+#!/usr/bin/env node
+import { spawnSync } from "node:child_process";
+
+const vitest = spawnSync("vitest", ["--run", ...process.argv.slice(2)], { stdio: "inherit" });
+if (vitest.status !== 0) process.exit(vitest.status ?? 1);
+
+const nodeTest = spawnSync(process.execPath, ["--test", "scripts/*.test.mjs"], { stdio: "inherit" });
+process.exit(nodeTest.status ?? 1);