referencesource.org
Verified reference data; each record carries its source URL and quote. verify_quote checks claims.
Connect it
Settings → Connectors → Add custom connector
URL: https://referencesource.org/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://referencesource.org/mcp{
"mcpServers": {
"referencesource": {
"url": "https://referencesource.org/mcp"
}
}
}claude mcp add --transport http referencesource https://referencesource.org/mcp{
"servers": {
"referencesource": {
"type": "http",
"url": "https://referencesource.org/mcp"
}
}
}{
"mcpServers": {
"referencesource": {
"command": "npx",
"args": [
"-y",
"referencesource-mcp@1.0.3"
]
}
}
}claude mcp add referencesource -- npx -y referencesource-mcp@1.0.34 tools, verified live
list_datasetsread-onlyWhat reference datasets are available? Lists every published dataset with its title, record count, last-verified date and a one-sentence summary. Covers regulatory thresholds, version compatibility, certification registers, licensing rules and more. Pass `query` to list only the datasets matching a topic — that is much cheaper than reading the whole list. Use the returned slug with search_records
search_recordsread-onlyLook up a specific record — search by state name, chemical, certificate number, product name or any keyword. Searches one dataset's records (case-insensitive substring match across all fields). Returns up to 20 matching records, each with its url, source and verbatim source_quote so the answer can be checked.
get_recordread-onlyFetch one record by id — for example, look up a FIPS 140 certificate's status, a state's boiler inspection rules, or a county's loan limit. Returns the full record with its source URL and verbatim source quote. Record ids appear in search_records results and in each record's url.
verify_quoteread-onlyIs this value actually right? Check a claimed fact against a published record instead of trusting it. Reports whether the claim matches the record's stored value (exact, case-insensitive or normalised — the match type is named), whether it appears in the record's verbatim source quote, and returns the source URL and quote so the claim can be traced upstream. Use this whenever you want to confirm a
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