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Treasury Long-Term Rates, Daily (U.S. Treasury)

treasuryinterestrates/long-term-rates

Returns the U.S. Department of the Treasury's Daily Treasury Long-Term Rates for one calendar month: for each published business day, the 20-year Treasury constant maturity rate (BC_20year), the long-term composite rate for bonds over 10 years (Over_10_Years) and the long-term real average rate (Real_Rate), in percent. Input is the month as YYYYMM. The Treasury server is slow, so a call can take about 20 seconds. A month with no published days returns count 0. Source: U.S. Department of the Treasury.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $0.50.

Data source

U.S. Department of the Treasury

Source: U.S. Department of the Treasury, Interest Rate Statistics (home.treasury.gov). Values are as published; dates are ISO 8601 and the row-id fields are dropped. Served by Omnial; not an official Treasury product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

Connect once and your AI can find and run this tool, and any other it needs.

Install itCreate an account
agent
// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "treasuryinterestrates/long-term-rates" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "treasuryinterestrates/long-term-rates" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "treasuryinterestrates/long-term-rates", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "treasuryinterestrates/long-term-rates", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

ChargePrice
Per call
$0.0026
Updated
Oct 24, 2026

Input and output schemas

Input schema
input_schema.json
{
  "type": "object",
  "required": [
    "month"
  ],
  "properties": {
    "month": {
      "type": "string",
      "pattern": "^(19|20)[0-9]{2}(0[1-9]|1[0-2])$",
      "description": "Calendar month as YYYYMM, for example 202510. The call returns every published day of that month; a month with no published days returns count 0."
    }
  },
  "additionalProperties": false
}
Output schema
output_schema.json
{
  "type": "object",
  "required": [
    "dataset",
    "count",
    "entries"
  ],
  "properties": {
    "count": {
      "type": "integer",
      "description": "Number of published days in the month."
    },
    "notice": {
      "type": "string",
      "description": "Present only when the month holds no published days."
    },
    "dataset": {
      "type": "string",
      "description": "The Treasury dataset name, for example DailyTreasuryYieldCurveRateData."
    },
    "entries": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "date",
          "values"
        ],
        "properties": {
          "date": {
            "type": "string",
            "description": "ISO 8601 date."
          },
          "values": {
            "type": "object",
            "description": "Fields are `BC_20year`, `Over_10_Years` and `Real_Rate`, in percent; the feed's three rows per day are folded into one entry per day.",
            "additionalProperties": {
              "type": [
                "number",
                "string",
                "null"
              ]
            }
          }
        },
        "additionalProperties": true
      }
    },
    "first_date": {
      "type": "string"
    },
    "latest_date": {
      "type": "string"
    }
  },
  "additionalProperties": true
}