@imqueue/mcp

A Model Context Protocol server for @imqueue. It lets AI coding agents (Claude Code, Cursor, VS Code, JetBrains, …) search the @imqueue documentation, scaffold typed services & clients, and drive the imq CLI — so they generate correct, idiomatic @imqueue code instead of guessing.

📖 Full documentation: imqueue.org/mcp — per-client setup, complete tools reference, agent workflows and the safety model.

Tools

Two surfaces, and they are not the same. The local server (npx -y @imqueue/mcp) has all 13 tools. The hosted server (mcp.imqueue.org/mcp) has six, all read-only — see below for why.

Hosted + local

Tool	What it does
search_docs	Search the official docs (guides, tutorial, CLI manual, API reference, articles) and return the most relevant pages + URLs.
get_doc	Fetch the full markdown of a doc page by URL.
list_packages	List the main @imqueue packages with install commands.
scaffold_service	Generate an IMQService subclass with @expose()d, JSDoc-typed methods + a bootstrap (offline, no CLI needed).
scaffold_client	Show how to generate and use the fully-typed client for a service (offline).

All five are read-only: they fetch or generate text and write nothing.

All five also declare an MCP outputSchema and return structuredContent alongside the human-readable markdown, so a client can consume results as data — take results[0].url from search_docs and hand it to get_doc, or write scaffold_service's files[] straight to disk — instead of parsing prose and code fences. For the scaffolders and the catalogue the markdown is rendered from that same structure, so the two can't drift.

get_doc's schema is metadata only, on purpose — and that turns out to be the more interesting design than having no schema at all. A schema obliges the server to send structuredContent, but nothing says structuredContent must repeat what is in content: it describes the structured part of the answer. So the page travels once, in content, and the schema carries url (the mirror actually fetched, which is not always the URL you passed), mimeType, bytes (so a caller can decide before reading) and truncated. Putting markdown in there as well would have doubled the largest response the server can produce — measured on /api/rpc/latest/, 16.6 kB of text plus 16.6 kB of structure for one read. The absence of a body field is itself self-describing: a caller reading the schema sees no content field and knows the page is in content, which is where every client already looks.

The CLI-backed tools have no schema: they return imq stdout, which has no shape worth promising.

CLI-backed tools — local only (require @imqueue/cli on PATH)

These drive the real CLI, so they act on the machine the server runs on. They exist in the local install only; the hosted server does not register them.

Tool	What it does
cli_status	Detect imq and report its version.
cli_install	Install @imqueue/cli globally (npm i -g @imqueue/cli) when it's missing.
cli_help	imq <command> --help — exact, version-accurate flags (no side effects).
create_service	imq service create — dry-run by default (writes nothing); pass apply: true to actually create the project.
generate_client	imq client generate <Service> — the real typed client (the service must be running).
fleet	imq ctl <start|stop|restart|status> — manage a directory of service repos. status is read-only.
config	imq config <check|get|set|init> — read/write CLI configuration (set for automation; init is interactive).
logs	imq log — dump current fleet logs (never follows; capped) or clean them.

Calls run with stdin closed and a timeout, so a missing-flag prompt fails fast instead of hanging. If imq isn't installed, run cli_install or use the offline scaffold_* tools.

Docs are fetched live from imqueue.org's machine-readable feeds (/llms.txt, per-page …/index.md mirrors), so the server never ships stale content. It only ever fetches imqueue.org.

Install

Requires Node.js ≥ 18. No build step for users — run straight from npm:

npx -y @imqueue/mcp

Claude Code

claude mcp add imqueue -- npx -y @imqueue/mcp

Other clients (Cursor, Claude Desktop, JetBrains, Windsurf, Zed, …)

Add to your MCP config (.cursor/mcp.json, claude_desktop_config.json, …):

{
  "mcpServers": {
    "imqueue": {
      "command": "npx",
      "args": ["-y", "@imqueue/mcp"]
    }
  }
}

VS Code and Visual Studio use a top-level servers key with "type": "stdio" instead of mcpServers. See imqueue.org/mcp/installation for the exact config file path and snippet for every client.

Hosted server (no install)

If your client supports remote MCP servers and you only need docs and scaffolding, point it at the hosted endpoint instead:

{ "mcpServers": { "imqueue": { "url": "https://mcp.imqueue.org/mcp" } } }

It serves six tools, all read-only: the five above plus local_install_guide, which returns the setup steps for the local install.

It does not offer the CLI-backed tools, by design. Those act on your machine — your project files, your running services, your CLI config — which a server running on Cloudflare's edge cannot reach. Advertising them there would mean listing tools that can never do what their names say, so they are not registered at all in remote mode. If you need them, install locally.

Develop

npm install
npm run build      # tsc -> dist/
npm run dev        # run from source with tsx
npm test           # unit tests (node:test under tsx) — no network needed
npm run smoke      # local surface: handshake + tools/list + annotations + tool calls
npm run verify     # all of the above plus both type-checks; also the publish gate

The unit tests cover what does not need the network: the ranker on a fixed corpus, the exact identifiers the scaffolders emit, URL resolution, telemetry, and the hosted Worker's HTTP surface — worker/worker.ts is a plain fetch handler, so it is called with a Request and asserted on the Response, with no wrangler and no deploy.

The hosted surface has its own check, because it is a different contract:

npm run dev:worker                                   # wrangler dev on :8787
node scripts/remote-smoke.mjs http://localhost:8787/mcp
npm run smoke:remote                                 # or against production

It asserts the exact six-tool list and that every one of them is read-only — the assertion that stops a future refactor from quietly re-exposing a CLI tool on the hosted endpoint.

Example

User: "Create an @imqueue user service with a getUser(id) method."

The agent calls scaffold_service({ name: "user", methods: [{ name: "getUser", params: [{ name: "id", type: "number" }], returns: "User" }] }) and gets a ready-to-paste UserService + bootstrap, then search_docs("run a service") / get_doc(...) to wire it up.

License

GPL-3.0 — free and open source.

Commercial licensing

Need to use @imqueue/mcp in a closed-source product, or want commercial support? A commercial license is available — see imqueue.com. Full docs: imqueue.org/mcp. See SPEC.md for the design and registry-distribution plan.