Tool detail

treasury-rates

Returns the US Treasury par yield curve plus average rates by security type, with the 2s10s spread and an inversion flag.

Categories: Market prices

Use when

get the current US Treasury yield curve
check whether the 2s10s yield curve is inverted
get US Treasury par yields for a past year

Not for

not corporate bond yields or non-US rates
not intraday rate updates — a daily series

Inputs

GET query param: year (integer 1990-2100, optional, default current)

Admitted input schema

{
  "type": "object",
  "properties": {
    "year": {
      "type": "integer",
      "minimum": 1990,
      "maximum": 2100,
      "description": "Calendar year of the par yield curve (default current)"
    }
  },
  "required": [],
  "additionalProperties": false
}

Endpoint

Method: GET
URL: https://api.agentstools.dev/treasury/rates

Payment

Protocol: x402
Listed price: 0.015 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: GET https://api.agentstools.dev/treasury/rates
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z