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Osv Advisory Mcp Server

io.github.cyanheads/osv-advisory-mcp-server
Query OSV.dev for package vulnerabilities and batch-audit dependency lists via MCP.
healthy
status
4
tools exposed
342ms
connect latency
1b6bedb667b6
schema fingerprint

Tools (4)

osv_list_ecosystems
Return the list of supported ecosystem identifier strings for use with osv_query_package and osv_query_batch. Ecosystem strings are case-sensitive exact matches — passing "pypi" instead of "PyPI" returns an error from the API. Use this tool to discover valid ecosystem strings before querying, or to
osv_query_package
Query known vulnerabilities for a single package version across any supported ecosystem. Returns all matching OSV advisories with severity (CVSS vectors), CVE aliases, affected version ranges, and first safe version. Use osv_list_ecosystems to validate the ecosystem string before querying — ecosyste
osv_get_vulnerability
Fetch the full advisory record for an OSV vulnerability ID. Returns the complete record: summary, full details text, CVE aliases, all affected packages and version ranges, fix versions, CVSS severity vectors, CWE weakness IDs, and references. Use when osv_query_package or osv_query_batch returns a v
osv_query_batch
Query vulnerabilities for multiple packages in one call — the primary tool for dependency audits, SBOM scanning, and lockfile triage. Pass an array of {name, ecosystem, version} tuples (up to 1000). Each entry in the response corresponds positionally to the input. Each finding includes CVE aliases f

Endpoint

https://osv-advisory.caseyjhand.com/mcp
Category: Databases · Last checked: 2026-07-30T13:53:19Z

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What this means. This server responded to the MCP handshake and listed its tools without authentication. The schema fingerprint lets us flag if tool signatures silently change (schema drift) between checks.