io.github.cyanheads/openlibrary-mcp-server
openlibrary-mcp-server
io.github.cyanheads/openlibrary-mcp-server costs 3 129 tokens of context per session. It has 10 tool definitions. That is 1.6 % of a 200k window. Measured 2026-10-03.
Search books and authors, fetch editions, browse subjects, and resolve cover images.
alive probed 2026-10-03 · HTTP 200
10tools
3.1ktokens for the tool definitions
1.6 %of a 200k context window
776 msto initialize
181 msto list tools
- Endpoint
- https://openlibrary.caseyjhand.com/mcp (streamable-http)
- Host
- openlibrary.caseyjhand.com
- Protocol
- 2025-11-25
- Reports itself as
- openlibrary-mcp-server 0.3.0
- Capabilities
- logging, prompts, resources, tools
- Instructions
- 960 characters
- Repository
- https://github.com/cyanheads/openlibrary-mcp-server
- Registry
- active, updated 2026-09-24 · registry entry
- Reachable
- 2 of the last 2 probes
Most expensive tools
| Tool | Tokens | Share of this server |
|---|---|---|
| openlibrary_search_books | 582 | 19 % |
| openlibrary_get_cover_url | 489 | 16 % |
| openlibrary_get_edition | 453 | 14 % |
| openlibrary_search_inside | 331 | 11 % |
| openlibrary_get_editions | 284 | 9 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Tokens |
|---|---|---|---|---|
| 2026-10-03 20:37 | alive | 776 ms | 10 | 3.1k |
| 2026-10-03 17:53 | alive | 422 ms | 10 | 3.1k |
Badge
[](https://mcp-pulse.ulehla.dev/s/io.github.cyanheads/openlibrary-mcp-server)