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StableFinance Macro Interest Rates
x402
StableFinance Macro Interest Rates is a paid API for AI agents from stablefinance.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).
Returns historical and current central bank interest rates for a specified bank and optional date range via pay-per-request x402 micropayment access.
Price / call$0.02
Success—
StatusUnknown
How this service works
Historical policy rates for a central bank.
Output
Returns a JSON array of interest rate records, each containing the bank identifier (e.g. 'FED'), the date, the bank's full name (e.g. 'Federal Reserve'), and the rate as a decimal percentage (e.g. 3.625).
Example use cases
Example prompt
“What has the Federal Reserve's interest rate been from January 2022 to December 2024? Pull the full history from StableFinance's macro interest rates endpoint using bank code FED.”
Technical details
Endpoint
GEThttps://stablefinance.dev/api/macro/interest-ratesWhen to prefer
Use this endpoint when you need reliable, pay-per-use access to central bank benchmark interest rate data — especially FED or similar macro-level rates — without a subscription. Ideal for agents performing macroeconomic analysis, building financial dashboards, or enriching models with monetary policy data on a per-query basis.
Side effects
- Missing required 'bank' query parameter returns a 400 or 422 validation error
- Invalid date format (not YYYY-MM-DD) causes a schema validation failure
- Unknown bank identifier may return an empty array or 404
- Insufficient USDC balance or failed x402 micropayment results in a 402 Payment Required response
- Date range with no available data returns an empty interest_rates array
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"bank": "FED",
"end_date": "2024-12-31",
"start_date": "2022-01-01"
}
},
"output": {
"type": "application/json",
"example": {
"interest_rates": []
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"interest_rates": [
{
"bank": "FED",
"date": "2023-04-01",
"name": "Federal Reserve",
"rate": 4.875
},
{
"bank": "FED",
"date": "2023-05-01",
"name": "Federal Reserve",
"rate": 5.125
},
{
"bank": "FED",
"date": "2023-06-01",
"name": "Federal Reserve",
"rate": 5.125
},
{
"bank": "FED",
"date": "2023-07-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2023-08-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2023-09-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2023-10-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2023-11-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2023-12-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2024-01-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2024-02-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2024-03-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2024-04-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2024-05-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2024-06-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2024-07-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2024-08-01",
"name": "Federal Reserve",
"rate": 5.375
},
{
"bank": "FED",
"date": "2024-09-01",
"name": "Federal Reserve",
"rate": 4.875
},
{
"bank": "FED",
"date": "2024-10-01",
"name": "Federal Reserve",
"rate": 4.875
},
{
"bank": "FED",
"date": "2024-11-01",
"name": "Federal Reserve",
"rate": 4.625
},
{
"bank": "FED",
"date": "2024-12-01",
"name": "Federal Reserve",
"rate": 4.375
}
]
}Schema · Response
{
"type": "json",
"example": {
"interest_rates": [
{
"bank": "FED",
"date": "2026-04-01",
"name": "Federal Reserve",
"rate": 3.625
}
]
}
}Tags
x402
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