Financial Data API
Fixed Income Data API — Bonds, Yield Curves & Credit Ratings
Government bonds, corporate bonds, municipal bonds. Yield curves and credit ratings from S&P, Moody's, Fitch.
Get API Key — FreeCoverage
Full fixed income coverage
Government Bonds
Sovereign debt across 50+ countries. Benchmark yields and prices
Corporate Bonds
Investment-grade and high-yield. ISIN lookup and pricing
Municipal Bonds
US munis, state and local government debt
Yield Curves
Daily yield curves by country. Spot and forward rates
Credit Ratings
S&P, Moody's, Fitch. Issuer and instrument-level
500K+ Bonds
Comprehensive universe. Search by ISIN, CUSIP, name
Endpoint Examples
Simple REST endpoints
GET /v1/bonds/yield-curve/{country}
{ "country": "US", "date": "2025-02-20", "tenors": [1, 2, 5, 10, 30], "yields": [4.52, 4.38, 4.21, 4.15, 4.42] }
GET /v1/bonds/{isin}/price
Bond price, yield, duration by ISIN. Supports government, corporate, municipal
GET /v1/bonds/search
Search by ISIN, CUSIP, issuer name, or bond description
Key Stats
Coverage at scale
50+
Countries
500K+
Bonds
Daily
Yield Curves
S&P / M / F
Credit Ratings