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FinancialMCP serverFirst audited Nov 13, 2026

io.github.cyanheads/treasury-fiscaldata-mcp-server

Query US Treasury national debt, interest rates, exchange rates, and fiscal datasets via MCP.The vendor's description, from its MCP Registry listing.

Passed public checksAudited Nov 13, 2026

Every public check ran and passed. Public audit: we connect as an AI client would, list the tools and check what they say. We do not run them. How we audit

Does it work?
YesConnected in 388 ms.
Sign-up?
None neededIt answered without any account or key.
Can it change things?
No, read-onlyAll 7 tools say they only read.
Endpointhttps://treasury-fiscaldata.caseyjhand.com/mcp

Source code Streamable HTTP · protocol 2025-11-25 · server version 0.4.0

What we checked, the evidence, and the tools it offers.

What we checked

Security

  • Passed: Connections are encrypted (HTTPS).

  • Passed: No hidden instructions found in tool text.

Safety labels

  • Passed: Every tool says whether it only reads or can change things.

Tools

  • Passed: 7 tools listed.

  • Passed: Every tool describes its inputs with a valid schema.

Protocol

  • Passed: The MCP handshake works (Streamable HTTP).

  • Passed: Protocol version 2025-11-25 (latest).

  • Passed: Unknown requests are refused.

Connection

  • Passed: The server responds.

Tools (7)

As the server describes them. The labels are the server's own: it says whether each tool only reads or can change things.

  • treasury_list_datasetsBrowse the curated catalog of US Treasury Fiscal Data API endpoints. Returns endpoint paths, field names, descriptions, and update cadence for each dataset. Use this tool before treasury_query_datase…Read-only
  • treasury_query_datasetQuery any Treasury Fiscal Data endpoint by path, field list, filters, sort, and page. Call treasury_list_datasets first to get the correct endpoint path and exact field names — a typo in either cause…Read-only
  • treasury_get_debtFetch national debt (Debt to the Penny) — total public debt outstanding broken into publicly-held debt and intragovernmental holdings. Three modes: "latest" returns the most recent business day's rec…Read-only
  • treasury_get_interest_ratesAverage interest rates Treasury pays on its outstanding securities by security type. Answers "what is the government's cost of borrowing?" Covers every type Treasury reports — marketable issues, non-…Read-only
  • treasury_get_exchange_ratesOfficial Treasury reporting exchange rates for ~165 countries — the rates US federal agencies are required to use when converting foreign currency to USD for official reporting. Published quarterly (…Read-only
  • treasury_dataframe_describeList DataCanvas dataframes materialized by treasury_query_dataset, treasury_get_debt, treasury_get_interest_rates, and treasury_get_exchange_rates. Each entry surfaces source tool, query parameters,…Read-only
  • treasury_dataframe_queryRun a single-statement SELECT against DataCanvas dataframes registered by treasury_query_dataset, treasury_get_debt, treasury_get_interest_rates, and treasury_get_exchange_rates. Read-only: writes, D…Read-only

Audit history

  1. Nov 13Passed

What we sent

Every request in this audit, with the answer and how long it took. We never send credentials and never call a tool.

RequestAnswerTime
initializeHTTP 200388 ms
initializedHTTP 202298 ms
tools/listHTTP 200116 ms
resources/listHTTP 20098 ms
prompts/listHTTP 20093 ms
unknown-methodHTTP 200100 ms

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