ai.doublespeed/mcp
doublespeed — Xcode as an API
Is the doublespeed MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.
Build, test and run iOS apps on a remote Mac from any machine. XcodeBuildMCP-compatible tools.
alive probed 2026-11-15 · unchanged since 2026-10-30
11tools
3.6ktokens in Claude Opus 5.5
1.8 %of Claude's 200k window
1.4×the median server
235 msto initialize
15 msto list tools
- Run it
- npx -y @doublespeed/mcp@0.1.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- doublespeed 0.1.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 0.4 % of a 1M context window
- Count
- 3.6k tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 3.7k. The o200k_base estimate is 2.1k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/doublespeed-main/mcp
- Website
- https://mac.doublespeed.ai
- Registry
- active, updated 2026-08-28 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.74×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| build_run_sim | 642 | 370 | 18 % |
| test_sim | 630 | 363 | 18 % |
| build_sim | 583 | 336 | 16 % |
| archive_app | 535 | 308 | 15 % |
| check_project | 380 | 219 | 11 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- Unraid RMCP ai.dinglebear/unraid-rmcp · not found
- Yarr MCP ai.dinglebear/yarr · needs network
- Yarr MCP ai.dinglebear/yarr-mcp · not found
- YTDL RMCP ai.dinglebear/ytdl-rmcp · not found
- dxpert.ai — industrial AI-readiness & UNS agents ai.dxpert/mcp · alive
- dxpert.ai — free UNS tools (no API key) ai.dxpert/uns-tools · alive
- ai.elfa/mcp · alive
- Elicitly ai.elicitly/elicitly · alive
Servers that mention xcode.
- NoMac app.nomac/nomac · needs auth
- Axint io.github.agenticempire/axint · alive
- com.xcodebuildmcp/XcodeBuildMCP · crashed on start
- io.github.xcodethink/pixelcheck · crashed on start
- io.github.cocaxcode/database-mcp · alive
- SwiftSkills dev.swiftskills/catalog · alive
- io.github.lapfelix/xcodemcp · install failed
- io.github.cocaxcode/api-testing-mcp · alive
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.