Data tools / FX, rates, news, weather and knowledge

Official reference rates API: SOFR, euro short-term rate, US Treasury yields

Use when an agent needs an official reference rate with its date and source: SOFR (NY Fed), euro short-term rate (ECB), US Treasury par yield curve (default 10y). Latest value or as of date=YYYY-MM-DD, with source attribution. Available free of charge on the NY Fed, ECB and US Treasury websites; P0 is not affiliated with the New York Fed. $0.002 per call (USDC or USDT). Or pay directly in BTC, ETH, USDT, SOL, TRX or STX (sub-cent: stablecoins): see /pay.

Price and access

Request

curl -i 'https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/rates/reference?series=sofr'
ParameterRequiredWhat it is
seriesyessofr (NY Fed), estr (ECB euro short-term rate), ust (US Treasury par yield curve)
datenoOptional YYYY-MM-DD: the latest observation on or before this date (default: latest)
tenornoseries=ust only: maturity (1m ... 30y)

Runnable code for JavaScript, Python and LangChain: /integrations. Full schema: OpenAPI.

Example answer

{
  "series": "sofr",
  "name": "Secured Overnight Financing Rate (SOFR)",
  "item": null,
  "tenor": null,
  "value": 3.9,
  "unit": "percent per annum",
  "date": "2026-10-22",
  "requested_date": null,
  "is_exact_date": null,
  "detail": {
    "percentile_1": 3.83,
    "percentile_25": 3.88,
    "percentile_75": 3.95,
    "percentile_99": 3.98,
    "volume_billions_usd": 2945,
    "revision_indicator": null
  },
  "as_of": "2026-10-25T09:30:00.000Z",
  "cached": false,
  "source": "Federal Reserve Bank of New York",
  "source_url": "https://www.newyorkfed.org/markets/reference-rates/sofr",
  "terms_url": "https://www.newyorkfed.org/privacy/termsofuse",
  "attribution": "Source: Federal Reserve Bank of New York, Secured Overnight Financing Rate (SOFR), https://www.newyorkfed.org/markets/reference-rates/sofr (available without charge at newyorkfed.org). The SOFR is subject to the Terms of Use posted at newyorkfed.org (https://www.newyorkfed.org/privacy/termsofuse). The New York Fed is not responsible for publication of the SOFR by P0 and does not sanction or endorse any particular republication, and has no liability for your use. P0 is not affiliated with the New York Fed; the New York Fed does not sanction, endorse, or recommend any products or services offered by P0. SOFR data are calculated using data provided under a license granted to the New York Fed by DTCC Solutions LLC; DTCC Solutions LLC, its affiliates and data sources have no liability for the content of this material. Values are shown as published, not modified.",
  "note": "Official reference data as published by the source, in percent per annum, without any calculation. Not financial advice. With date= the latest observation on or before that date is returned (is_exact_date says if it matches). as_of is when it was read from the source (cached up to 30 min for recent dates)."
}

Free sample, no payment: /rates/reference/sample. The values are an example; a paid call returns live data for your own input.

Use it from an AI assistant (MCP)

Remote MCP server for this topic: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/mcp/fx-rates-news-weather-data, tool rates_reference. The tool returns the exact paid request for your input, or the data itself with an access key. All tools on one server: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/mcp.

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