io.github.cyanheads/osv-advisory-mcp-server
osv-advisory-mcp-server
Query OSV.dev for package vulnerabilities and batch-audit dependency lists via MCP.
alive probed 2026-10-15 · HTTP 200
4tools
2.8ktokens in Claude Opus 5.5
2.8ktokens in Claude Code
1.4 %of a 200k context window
1.6ko200k_base estimate
291 msto initialize
106 msto list tools
- Endpoint
- https://osv-advisory.caseyjhand.com/mcp (streamable-http)
- Host
- osv-advisory.caseyjhand.com
- Protocol
- 2025-11-25
- Reports itself as
- osv-advisory-mcp-server 0.2.0
- Capabilities
- logging, prompts, resources, tools
- Instructions
- 1 250 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/cyanheads/osv-advisory-mcp-server
- Registry
- active, updated 2026-10-14 · registry entry
- Reachable
- 9 of the last 9 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| osv_query_package | 499 | 32 % |
| osv_get_vulnerability | 463 | 29 % |
| osv_query_batch | 458 | 29 % |
| osv_list_ecosystems | 155 | 10 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-15 10:33 | alive | 215 ms | 4 | 2.8k | 1.6k |
| 2026-10-14 18:55 | alive | 636 ms | 4 | 2.8k | 1.6k |
| 2026-10-09 11:18 | alive | 318 ms | 4 | 1.8k | 1.0k |
| 2026-10-05 14:39 | alive | 291 ms | 4 | 1.8k | 1.0k |
| 2026-10-05 00:33 | alive | 192 ms | 4 | 1.0k | |
| 2026-10-04 10:04 | alive | 273 ms | 4 | 1.0k | |
| 2026-10-04 07:57 | alive | 327 ms | 4 | 1.0k | |
| 2026-10-03 20:37 | alive | 865 ms | 4 | 1.0k | |
| 2026-10-03 17:53 | alive | 611 ms | 4 | 1.0k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.cyanheads/osv-advisory-mcp-server)
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.