API archive entry · source-reported
VoxOdds
Polymarket and Kalshi odds, all-in executable quotes, EV checks and audited forecast scores
Other Finance APIs
These records share a directory category and are ordered by similarity of reported access facts. They are a shortlist, not proof of drop-in compatibility.
KmalServico Gold Price Dataset
Current gold price per gram at 6 purities for 188 countries, JSON, no auth
No auth · HTTPS reported · CORS No
Binlist
Public access to a database of IIN/BIN information
No auth · HTTPS reported · CORS Unknown
Econdb
Global macroeconomic data
No auth · HTTPS reported · CORS Yes
EstimateTax
US federal, state and local income tax calculation for 2026, with the source of every figure
No auth · HTTPS reported · CORS Yes
Fed Treasury
U.S. Department of the Treasury Data
No auth · HTTPS reported · CORS Unknown
Futures Clock
Trading hours and session windows for 65 futures products on 16 global exchanges
No auth · HTTPS reported · CORS Yes
How to compare them
Coverage
Compare exact endpoints, fields, geography, history, and update frequency.
Operating cost
Model request volume, caching, overages, support, and migration cost.
Integration risk
Test auth, errors, pagination, latency, versioning, and outage behavior.
Data rights
Review attribution, redistribution, retention, privacy, and commercial-use terms.
Source reference
This page separates source-reported facts from questions that need live provider verification.