Städel Museum MCP Server
This server enables AI models to access the Städel Museum's digital collection via OAI-PMH, allowing harvesting of records, retrieval of multilingual metadata, and fetching of high-resolution images.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.
get-museum-objectGet detailed information about a specific Städel museum object by its OAI identifier (e.g. oai:DE-MUS-048017:2442) or bare object number (e.g. 2442). Returns metadata and optionally the high-resolution image.
list-setsLists all organizational sets (collections/departments) available in the Städel Museum OAI-PMH interface.
open-staedel-explorerOpen the interactive Städel Explorer app for browsing and filtering objects visually.
search-museum-objectsHarvests a list of object identifiers from the Städel Museum. Note: This uses OAI-PMH, so standard full-text keyword searching is not supported. You must filter by date or Set. Returns a list of identifiers to be used with the get-museum-object tool.
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
fast-xml-parser has an entity encoding bypass via regex injection in DOCTYPE entity names
fast-xml-parser affected by numeric entity expansion bypassing all entity expansion limits (incomplete fix for CVE-2026-26278)
fast-xml-parser affected by DoS through entity expansion in DOCTYPE (no expansion limit)
fast-xml-parser has stack overflow in XMLBuilder with preserveOrder
fast-xml-parser XMLBuilder: XML Comment and CDATA Injection via Unescaped Delimiters
STAEDEL_API_TIMEOUT_MS10000 Per-request timeout to the Städel API.PORTTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
4/4 tools missing one or more hints — get-museum-object (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list-sets (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); open-staedel-explorer (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +1 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tests exist
No test files found
Add tests that exercise each declared tool.
Production dependencies are patched
1 critical, 2 high severity in production deps — fast-xml-parser@4.3.0 (critical), fast-xml-parser@4.3.0 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
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