Open Data · head-to-head
Onyx Bazaar vs Umeå Open Data
Onyx Bazaar is a public leaderboard of x402 pay-per-call HTTP services on Base, Solana, and other chains, refreshed every 15 minutes from Coinbase's CDP discovery API. It ranks listed endpoints by call volume, unique payers, price, and recency, with views for cheapest, newest, and highest-quality services. A keyless JSON endpoint (/bazaar.json) mirrors the same leaderboard data shown on the page for agents that want to query it directly.
Umeå's open-data portal runs on the OpenDataSoft platform, publishing the Swedish city's GIS, transit, and municipal datasets through the standard ODS Explore v2.1 API. Every dataset can be queried, filtered, and exported as JSON, CSV, or GeoJSON with no authentication required for public data.
| Onyx Bazaar | Umeå Open Data | |
|---|---|---|
| Authentication | None | None |
| Pricing | free | free |
| Formats | JSON | JSON, CSV, GeoJSON |
| CORS | yes | yes |
| HTTPS | Yes | Yes |
Umeå Open Data supports 3 response formats, while Onyx Bazaar offers fewer — pick Umeå Open Data for more integration flexibility.