API archive entry · source-reported
PredScope
Free prediction market odds and analytics data from Polymarket
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.
Grizzly Bulls
U.S. GDP, CPI, unemployment, and payroll history
No auth · HTTPS reported · CORS Yes
US Freelancer Tax
2026 US self-employment tax, quarterly estimates, QBI, mileage and home office deductions
No auth · HTTPS reported · CORS Yes
MortgageCalculator
16 mortgage calculators: payment, refinance, APR, rent vs. buy, points and amortization schedules
No auth · HTTPS reported · CORS Yes
FundBiz
UK specialty business finance lender terms, typical rates and decision times
No auth · HTTPS reported · CORS Yes
QuiVad
Net short positions disclosed to 23 market regulators, fund by fund, since 2010
No auth · HTTPS reported · CORS Yes
Nigeria PAYE
Nigerian income tax (PAYE) and take-home pay under the Nigeria Tax Act 2025
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.