io.github.vj88-coder/pairbook-mcp
pairbook
Portfolio risk analysis, correlation and ETF overlap for 4,700+ US stocks and ETFs. Free, no key.
alive probed 2026-10-15
6tools
2.3ktokens in Claude Opus 5.5
2.4ktokens in Claude Code
1.2 %of a 200k context window
1.3ko200k_base estimate
345 msto initialize
17 msto list tools
- Run it
- npx -y pairbook-mcp@1.3.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- pairbook 1.3.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/vj88-coder/pairbook-mcp
- Website
- https://www.pairbook.io
- Registry
- deprecated, updated 2026-08-29 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| analyze_portfolio | 370 | 28 % |
| compare_pair | 252 | 19 % |
| find_diversifiers | 190 | 14 % |
| weekly_returns | 189 | 14 % |
| symbol_profile | 174 | 13 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.vj88-coder/pairbook-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.