{"capabilities":{"pushNotifications":false,"stateTransitionHistory":false,"streaming":false},"defaultInputModes":["application/json"],"defaultOutputModes":["application/json"],"description":"Pay-per-call API gateway on the x402 protocol (HTTP 402 + USDC on supported networks). Agents discover APIs, read MCP-style metadata, and call any listed API per request — no accounts, API keys, or SDKs.","documentationUrl":"https://apiosk.com/docs","name":"Apiosk Gateway","payments":{"challengeStatus":402,"discovery":"https://gateway.apiosk.com/.well-known/x402","proofHeader":"X-Payment","protocol":"x402","settlementAsset":"USDC","settlementNetwork":"Base by default; see /.well-known/x402 accepts[] for other enabled EVM networks"},"preferredTransport":"HTTP+JSON","protocolVersion":"0.3.0","provider":{"organization":"Apiosk","url":"https://apiosk.com"},"skills":[{"description":"The x402 discovery document: payable resources with the spec-shaped accepts[] a live 402 carries. Publishes managed listings (hosted, priced and settled through Apiosk) by default; add ?include=federated or ?include=all for the external endpoints Apiosk indexes but does not proxy. Paginated — items[] is one page, and resources are served best-documented first, so the first page is the part you can call without a second round-trip. Walk links.next; narrow with ?category=, ?q=, ?contract=documented and ?perPage= (max 100). meta.categories lists every category with its counts and a ready-made URL.","examples":["GET https://gateway.apiosk.com/.well-known/x402","GET https://gateway.apiosk.com/.well-known/x402?documented=true","GET https://gateway.apiosk.com/.well-known/x402?category=finance&perPage=50","GET https://gateway.apiosk.com/.well-known/x402?q=weather"],"id":"discover-paid-resources","name":"Discover paid resources","tags":["discovery","x402","payments"]},{"description":"List every active, verified listing with its provider, pricing, endpoints, schemas, examples and pricing rules. Filter on search, category, tag, listing_type, min_price, max_price, created_after, created_before; sort by name, price or newest. Results are ranked managed-first: listings settled through Apiosk come before federated listings settled on the provider's own host, with the requested sort applied within each group (see meta.ranking).","examples":["GET https://gateway.apiosk.com/v1/apis?search=weather","GET https://gateway.apiosk.com/v1/apis?max_price=0.01&sort=price&order=asc","GET https://gateway.apiosk.com/v1/apis/{slug}","GET https://gateway.apiosk.com/types"],"id":"discover-apis","name":"Discover APIs","tags":["discovery","catalog"]},{"description":"Browse who publishes on the gateway (name, username, avatar, bio, sector, listing count), most listings first, then open one provider's catalog.","examples":["GET https://gateway.apiosk.com/v1/providers","GET https://gateway.apiosk.com/v1/providers/{username}"],"id":"discover-providers","name":"Discover providers","tags":["discovery","catalog","providers"]},{"description":"MCP-style, agent-native manifest for one API: operations, input/output schemas, pricing, tool annotations.","examples":["GET https://gateway.apiosk.com/{api_slug}/metadata"],"id":"read-api-metadata","name":"Read API metadata","tags":["discovery","mcp"]},{"description":"Call any gateway-hosted listing (hosted_externally: false) through the uniform execute contract or the transparent proxy path. Paid endpoints return HTTP 402 with x402 payment requirements until a payment proof is supplied.","examples":["POST https://gateway.apiosk.com/{api_slug}/execute","GET https://gateway.apiosk.com/{api_slug}/{path}"],"id":"execute-api","name":"Execute an API","tags":["execution","x402","payments"]},{"description":"A listing with hosted_externally: true is indexed here but hosted by the provider: gateway_url is empty, so call external_resources[].resource verbatim on the provider's own host and pay them directly with that resource's accepts[]. Never route it through the gateway.","examples":["GET https://gateway.apiosk.com/v1/apis?listing_type=federated","GET https://gateway.apiosk.com/.well-known/x402"],"id":"call-federated-listing","name":"Call a federated listing","tags":["execution","x402","federated"]}],"url":"https://gateway.apiosk.com","version":"0.1.0"}