Look up a Wikidata entity by an external identifier such as a DOI, PubMed ID, ORCID iD, or OpenAlex ID. Returns match=<entity> on success, match=null when not found, and match=null with multipleMatches populated when a Wikidata data integrity issue causes more than one entity to claim the same ex...
Part of the Wikidata Mcp Server server.
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AI agents use wikidata_resolve_external_id to create or modify resources in Wikidata Mcp Server. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call wikidata_resolve_external_id repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Wikidata Mcp Server.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"wikidata_resolve_external_id": {
"limits": [
{
"counter": "wikidata_resolve_external_id_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Wikidata Mcp Server policy for all 7 tools.
These attack patterns abuse exactly the kind of access wikidata_resolve_external_id gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Look up a Wikidata entity by an external identifier such as a DOI, PubMed ID, ORCID iD, or OpenAlex ID. Returns match=<entity> on success, match=null when not found, and match=null with multipleMatches populated when a Wikidata data integrity issue causes more than one entity to claim the same external ID. Common cross-server join use cases: CrossRef DOI → Wikidata paper QID (P356), PubMed PMID → Wikidata paper QID (P698), ORCID → author QID (P496), OpenAlex ID → entity QID (P10283). Known value normalization is applied automatically: DOIs are uppercased, PMID prefixes stripped, ORCID hyphens normalized.. It is categorised as a Write tool in the Wikidata Mcp Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Wikidata Mcp Server MCP server in PolicyLayer and add a rule for wikidata_resolve_external_id: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Wikidata Mcp Server. Nothing to install.
wikidata_resolve_external_id is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the wikidata_resolve_external_id rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for wikidata_resolve_external_id. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
wikidata_resolve_external_id is provided by the Wikidata Mcp Server MCP server (@cyanheads/wikidata-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 Wikidata Mcp Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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