Doublespeed — Xcode as an API

Build, test and run iOS apps on a remote Mac from any machine. XcodeBuildMCP-compatible tools.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Not yet automatically verified

We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "doublespeed-xcode-as-an-api": {
      "command": "npx",
      "args": [
        "-y",
        "@doublespeed/mcp"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Capabilities & Tool Schemas (11)Self-reported

Inspect callable tools, capabilities, and parameters exposed to AI agents by Doublespeed — Xcode as an API.

discover_projs

find .xcworkspace / .xcodeproj / Package.swift

list_schemes

shared schemes of a project/workspace

list_sims

simulators, runtimes and Xcode versions on the fleet

check_project

no key needed** — schemes resolve, every Swift file parses, plists valid (lint, no compile)

build_sim

compile for the iOS Simulator; `file:line:col` errors

test_sim

build + XCTest / Swift Testing; per-test results

Documentation Overview

@doublespeed/mcp

An MCP server that gives a coding agent a Mac. Build, test, archive and run iOS apps — native, React Native, Expo — on the doublespeed Mac fleet from Linux, a container, CI, or a Mac without Xcode.

Tool names match XcodeBuildMCP (build_sim, test_sim, build_run_sim, list_sims, discover_projs, list_schemes, stop_app_sim, doctor) so prompts and skills written for a local Mac work unchanged when there is no Mac.

Install

Needs Node 20+. check_project works with no key at all; everything else needs a DS_API_KEY (free $200 of Mac time at https://mac.doublespeed.ai/dashboard → API keys).

Claude Code

Terminal

claude mcp add doublespeed -e DS_API_KEY=dsx_... -- npx -y @doublespeed/mcp

Cursor / Windsurf / Codex / VS Code — add to the client's MCP config:

config.json

{ "mcpServers": { "doublespeed": { "command": "npx", "args": ["-y", "@doublespeed/mcp"], "env": { "DS_API_KEY": "dsx_..." } } } }

Tools

Tool	What it does	Where it runs
`discover_projs`	find .xcworkspace / .xcodeproj / Package.swift	local
`list_schemes`	shared schemes of a project/workspace	local
`list_sims`	simulators, runtimes and Xcode versions on the fleet	API
`check_project`	no key needed — schemes resolve, every Swift file parses, plists valid (lint, no compile)	Mac
`build_sim`	compile for the iOS Simulator; `file:line:col` errors	Mac
`test_sim`	build + XCTest / Swift Testing; per-test results	Mac
`build_run_sim`	build, install, launch; returns a browser URL to a live simulator	Mac
`stop_app_sim`	end a live session	API
`archive_app`	unsigned `.xcarchive` (Release)	Mac
`job_status`	status, diagnostics, tests, log tail of any job	API
`doctor`	key, API reachability, fleet capabilities	local + API

Only files under workspaceRoot (default: the project's directory) are uploaded, content-addressed — after the first run only changed files move. A small app's test run takes ~20–40 s of Mac time and costs a few cents; nothing is billed while queued.

Not yet

Screenshots / accessibility tree of the running simulator, code signing and TestFlight upload. The live build_run_sim link is meant for a human to look at.

Agents without a Mac build, test and run iOS apps through mac.doublespeed.ai (npx -y @doublespeed/ds). Docs: https://mac.doublespeed.ai/docs.md

Read the full README →View source on GitHub →

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Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

Last commit

10d ago

Most recent push to the default branch.

Tools exposed

Callable tools this server registers over MCP.

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Frequently Asked Questions about Doublespeed — Xcode as an API

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "doublespeed-xcode-as-an-api": { "command": "npx", "args": ["-y", "doublespeed — Xcode as an API"] } }

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Technical Specs & Signals

CategoryDeveloper Tools

52Quality signal: Good · 52/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools25/30

Adoption & activity4/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 9h ago via OSV.dev · @doublespeed/mcp (npm)

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