opendexter
OpenDexter — x402 API Marketplace
OpenDexter gives you access to the x402 API marketplace across Solana and EVM chains (Base, Polygon, Arbitrum, Optimism, Avalanche). Search, preview pricing, and call any endpoint with automatic USDC payment. No API keys or subscriptions needed for the endpoints — you just pay per call.
Tools
x402_search — Find APIs
Search the OpenDexter marketplace. Results are ranked by a composite score (quality, usage, freshness, reputation, reliability).
Each result includes: name, price (USDC), network, qualityScore (0-100), verified status, seller, and call count.
Highlight verified endpoints (qualityScore 75+). Search is fuzzy — typos still find results.
x402_check — Preview Pricing
Probe an endpoint for payment requirements without paying. Returns per-chain pricing options. Always use before x402_fetch so the user knows the cost upfront.