io.github.YawLabs/mcp
yaw-mcp
One install, every MCP server, managed from yaw.sh/mcp. Runs locally: no account, no sign-in.
alive probed 2026-10-14
11tools
4.0ktokens in Claude Opus 5.5
4.1ktokens in Claude Code
2.0 %of a 200k context window
2.4ko200k_base estimate
633 msto initialize
51 msto list tools
- Run it
- npx -y @yawlabs/mcp@1.1.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- yaw-mcp 1.1.0
- Capabilities
- prompts, resources, tools
- Instructions
- 521 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Registry
- active, updated 2026-10-12 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| mcp_connect_exec | 672 | 28 % |
| mcp_connect_dispatch | 259 | 11 % |
| mcp_connect_activate | 247 | 10 % |
| mcp_connect_discover | 227 | 9 % |
| mcp_connect_find_tool | 195 | 8 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.YawLabs/mcp)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.