x4PayAPI Market

Sirenic

French & European company data for AI agents: KYB, financials, capital, default scoring, sanctions screening, EU search + LEI/GLEIF. Official open data, GDPR-safe, pay-per-call in USDC.

3 of 26 routes settlement-verified · $0.001–$0.5 USDC/request · 26 endpoints / 26 tools · Data · base network · x402 protocol

Verified routes

Other routes are unverified.

Networks: Base (settlement-verified)

Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.

url https://payapi.market/mcp

About this API

Sirenic is listed in the Data category with pricing at $0.001–$0.5 USDC/request. 3 routes have been settlement-verified by PayAPI Market. View receipt on Basescan.

Payments settle on base in USDC via the x402 protocol. AI agents discover this API through the PayAPI Market MCP server and pay per request without API keys or accounts.

This API exposes 26 endpoints. Only the verified routes have been tested by PayAPI Market. Other routes are unverified.

How to call this API

Every protected route returns HTTP 402 with x402 payment requirements. An agent pays the stated USDC amount on Base and retries with the payment header. No API keys, no accounts. Browse the marketplace or list your own API.

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