{"openapi":"3.1.0","info":{"title":"NFT Alpha x402","version":"1.0.0","description":"Paid x402 OpenSea NFT market signal endpoint on Base USDC."},"servers":[{"url":"https://nft-alpha-x402.fly.dev"}],"x-discovery":{"ownershipProofs":["0x7861db4efc14a1ed5dd8c96c528a3796560f1393"]},"paths":{"/api/nft-signal":{"post":{"summary":"Get NFT collection market signals","description":"Returns recent OpenSea listing, sale, bid, and offer signals for one or more NFT collection slugs.","x-payment-info":{"protocols":["x402"],"price":{"mode":"fixed","currency":"USD","amount":"0.02"}},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"collection":{"type":"string","description":"OpenSea collection slug, for example pudgypenguins"},"collections":{"type":"array","items":{"type":"string"},"maxItems":10,"description":"Batch query up to 10 OpenSea collection slugs"}},"required":["collection"],"additionalProperties":false},"example":{"collection":"pudgypenguins"}}}},"responses":{"200":{"description":"NFT signal response","content":{"application/json":{"schema":{"type":"object","properties":{"ok":{"type":"boolean"},"results":{"type":"array"},"meta":{"type":"object"},"error":{"type":"string"}},"required":["ok"]}}}},"402":{"description":"x402 payment required"}}}}}}