Synthetic Universe Data APIs
Pay-per-call data APIs for AI agents on Base, Polygon, Arbitrum, Avalanche, Solana via x402 — $0.01 USDC/call, no API keys or accounts. Live catalog: brianbooms.com/agents/
1 of 38 routes settlement-verified · $0.01 USDC/request · 38 endpoints · Data · base network · x402 protocol
Verified routes
GET /api/v1/data/iss-pass· $0.01 · 2026-10-01 · receipt
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/mcpAbout this API
Synthetic Universe Data APIs is listed in the Data category with pricing at $0.01 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-10-01. 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 38 endpoints. Only the verified route has 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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