io.github.cyanheads/crossref-mcp-server
crossref-mcp-server
io.github.cyanheads/crossref-mcp-server costs 4 288 tokens of context per session. It has 7 tool definitions. That is 2.1 % of a 200k window. Measured 2026-10-03.
Resolve DOIs, search ~155M scholarly works, and fetch references via the Crossref REST API.
alive probed 2026-10-03 · HTTP 200
7tools
4.3ktokens for the tool definitions
2.1 %of a 200k context window
1.0 sto initialize
169 msto list tools
- Endpoint
- https://crossref.caseyjhand.com/mcp (streamable-http)
- Host
- crossref.caseyjhand.com
- Protocol
- 2025-11-25
- Reports itself as
- crossref-mcp-server 0.4.1
- Capabilities
- logging, prompts, resources, tools
- Instructions
- 1 064 characters
- Repository
- https://github.com/cyanheads/crossref-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 |
|---|---|---|
| crossref_search_works | 1 189 | 28 % |
| crossref_search_funders | 925 | 22 % |
| crossref_search_journals | 772 | 18 % |
| crossref_get_work | 599 | 14 % |
| crossref_get_references | 392 | 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 | 1.0 s | 7 | 4.3k |
| 2026-10-03 17:53 | alive | 555 ms | 7 | 4.3k |
Badge
[](https://mcp-pulse.ulehla.dev/s/io.github.cyanheads/crossref-mcp-server)