{"service":"agenttoll.dev","endpoint":"https://agenttoll.dev/paid/academic/pubmed","method":"POST","protocol":"x402","price_usd":"0.03","network":"eip155:8453","facilitator":"https://api.cdp.coinbase.com/platform/v2/x402","message":"This is free buyer metadata for an x402-paid endpoint. POST JSON to receive the 402 payment challenge, then retry with a signed payment.","buyer_contract":{"schemaVersion":"agenttoll.buyer_contract.v1","service":"agenttoll.dev","tool":"search_pubmed","category":"Academic & Science","method":"POST","endpoint":"https://agenttoll.dev/paid/academic/pubmed","priceUsd":"0.03","maxPaymentUsd":"0.03","protocol":"x402","scheme":"exact","network":"eip155:8453","networkName":"Base mainnet","asset":"USDC","assetContract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","payTo":"0x62a0D3d9DF0dE8804983009949c714EaeAFd87F1","facilitator":"https://api.cdp.coinbase.com/platform/v2/x402","requestBody":{"query":"CRISPR gene therapy clinical trials"},"input":{"query":"string biomedical query","limit":"optional int 5-50 default 20"},"expectedResult":"JSON with source-backed fields, response metadata, and decision/readout fields where the endpoint is a brief.","verifyBeforePaying":["network must equal eip155:8453","asset contract must equal 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","payTo must equal 0x62a0D3d9DF0dE8804983009949c714EaeAFd87F1","maxPayment must be no more than $0.03","resource path must match this endpoint"],"receiptSchema":"https://agenttoll.dev/agenttoll-receipt-v1.md"},"approval_prompt":"This AgentToll call costs $0.03 on Base mainnet. Verify payTo 0x62a0D3d9DF0dE8804983009949c714EaeAFd87F1, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, and maxPayment $0.03 before approving. It returns JSON with source-backed fields, response metadata, and decision/readout fields where the endpoint is a brief.","receipt_schema":"https://agenttoll.dev/agenttoll-receipt-v1.md","tool":{"name":"search_pubmed","description":"Search 37M+ biomedical papers via NCBI PubMed. Returns PMIDs, titles, authors, journals.","buyer_value":"Pay $0.03 for Search 37M+ biomedical papers via NCBI PubMed. Returns PMIDs, titles, authors, journals.","input":{"query":"string biomedical query","limit":"optional int 5-50 default 20"},"example":{"query":"CRISPR gene therapy clinical trials"},"sample_output":"JSON with source-backed fields, response metadata, and decision/readout fields where the endpoint is a brief.","discovery_queries":["search pubmed","search pubmed x402","search pubmed paid MCP tool","academic & science paid data API for AI agents"],"docs":"https://agenttoll.dev/tools/search_pubmed"}}