PayAPI Market
Search settlement-verified x402 APIs for free. Pay providers in USDC on Base, Solana or Algorand.
| Endpoint | https://payapi.market/mcp (streamable-http) |
|---|---|
| Registry version | 1.1.0 |
| Now | 5 tools · grade C (71) · pin ts_60047d2a0f6200e1ac2a32de41197195 · protocol 2025-06-18 |
| First / last listed | 2026-11-13 01:39 UTC / 2026-11-13 01:39 UTC |
| Grade over time | 2026-11-13: C (71), 5 tools |
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Tools: search_apis list_apis get_api submit_listing search_agents
search_apis | Free-text search across the live catalogue. Matches listing name, description, category and provider name. Returns settlement-verified listings only unless verified_only is false. Free and read-only; spends nothing. params: query*, verified_only, limit, network |
list_apis | Browse the live catalogue, optionally filtered to one category. Omit category for everything. Returns settlement-verified listings only unless verified_only is false. Free and read-only; spends nothing. params: category, verified_only, limit, network |
get_api | Fetch a single live listing by its id or slug, including base_url, price range, network and verification state. payment_verified is true if at least one route was paid; verified_routes names each paid route with its on-chain receipt. test_payment_usdc is the test payment, not the per-call price. amount_usdc is deprecated and has the same value; it is the verification test payment, not the price. T params: id* |
submit_listing | List one or more APIs. The minimum is a paid URL (url, paid_route_url, or urls) and contact_email (email is accepted as the same field). Price, payTo, network, description and name are read from the HTTP 402 when you omit them. Category defaults to Data, which the listing schema accepts. urls takes at most 20 routes. Each route is probed and returned in results as listed, pending or rejected, with params: url, urls, name, description, base_url, paid_route_url, method, price, networks, payTo, contact_email*, email, category, sample_input, sample_url, example_expected_output, input_param_to_vary, settles_after_success, mcp_endpoint, provider_name, network |
search_agents | Search AI agents by business sector, name, or description. Agents are AI services that perform tasks like lead generation, data enrichment, or automation. Returns agents with their sector, pricing, and verified status. Free and read-only. params: query, sector, sort, limit |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.