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Best government procurement APIs

GovRates Per Diem and Fair Market Rent API

Real Estate & Housing

One API to look up U.S. federal GSA per-diem (travel lodging + M&IE) and HUD Fair Market Rent / Small Area FMR (rent by bedroom, with voucher payment-standard bands) for any ZIP code — joined in a single call. FY2026, public-domain data, clean JSON. Built for travel-nurse stipend, relocation/HR, and real-estate/Section-8 tools. Unofficial; not affiliated with GSA or HUD.

Free 7-Day Trial

100% uptime 85ms avg MCP ready

BPS Multi-City Compliance API

Legal & Compliance

Building Performance Standards compliance screening for 7 major US jurisdictions (NYC, Boston, Denver, Washington State, Oregon, Maryland, and Washington DC).

Free 7-Day Trial

100% uptime 39ms avg MCP ready

Costa Rica e-Invoice Validator API - Hacienda

Legal & Compliance

Keyless Costa Rica Hacienda v4.4 comprobante validator: official XSD for 8 document types, the 50-digit clave numerica, CABYS code lists, totals/IVA math, XAdES-EPES signature check. Rule-coded JSON r

Free 7-Day Trial

100% uptime 279ms avg MCP ready

EU Building Energy Compliance API

Sustainability & Green Tech

EPC label, EPBD MEPS compliance, and stranding-risk screening across 8 EU markets — primary energy, solar obligation, renovation cost, and cap-rate discount modelling for lenders and asset managers.

Free 7-Day Trial

100% uptime 30ms avg MCP ready

Solaris Africa Hybrid Feasibility API

Sustainability & Green Tech

Engineering-grade API for rapid solar, battery, diesel hybrid feasibility, financial modelling and lender-ready project screening across African commercial & industrial markets.

Free 7-Day Trial

100% uptime 300ms avg MCP ready

GSA Surplus Auctions API

Commerce & eCommerce

Search and browse U.S. government surplus auctions from GSA.gov. Find vehicles, electronics, equipment, and more at below-market prices.

Free 7-Day Trial

100% uptime 1,063ms avg MCP ready

Digital Product Passport API

Legal & Compliance

EU-Compliance: Digital Product Passport (DPP) Immutable QR Engine. Guaranteed 10-year URL persistence for Textile and Battery ESPR mandates (March 2026). High-error-correction QR generation optimized for industrial label printing. Frankfurt (EU-Central) data residency.

Free 7-Day Trial

100% uptime 524ms avg MCP ready

Audit Grade BPS Multi-City Compliance API

Legal & Compliance

Ensure multi-city compliance with ease using the Audit Grade BPS API for efficient audits.

Free 7-Day Trial

100% uptime MCP ready

Plain Language BPS Multi-City Compliance API

Legal & Compliance

Simplify complex compliance with the Plain Language BPS API, making legal terms accessible.

Free 7-Day Trial

100% uptime MCP ready

Statutory BPS Multi-City Compliance API

Legal & Compliance

Navigate statutory requirements across multiple cities effortlessly with the Statutory BPS API.

Free 7-Day Trial

100% uptime MCP ready

Acquisitions Focused EU Building Energy Compliance API

Real Estate & Housing

Optimize your acquisition strategies with our Acquisitions Focused Acquisitions Focused EU Building Energy Compliance API, ensuring energy-efficient properties.

Free 7-Day Trial

100% uptime MCP ready

EU Building Energy Compliance Risk Assessment API

Legal & Compliance

Assess risk effectively using our EU Building Energy Compliance Risk Assessment API, safeguarding your investments against non-compliance.

Free 7-Day Trial

100% uptime MCP ready

Comprehensive EU Building Energy Compliance API for Financial Exposure

Legal & Compliance

Protect your financial exposure with our Comprehensive Comprehensive EU Building Energy Compliance API for Financial Exposure ensuring robust compliance across all standards.

Free 7-Day Trial

100% uptime MCP ready

Developer Insight EU Building Energy Compliance API

Sustainability & Green Tech

Gain valuable insights into building energy compliance with our Developer Insight Developer Insight EU Building Energy Compliance API for informed decisions.

Free 7-Day Trial

100% uptime MCP ready

EU Building Energy Compliance API for Fund Compliance Teams

Legal & Compliance

Facilitate seamless compliance checks with our EU Building Energy Compliance API for Fund Compliance Teams designed specifically for Fund Compliance Teams.

Free 7-Day Trial