{"service":"agenttoll.dev","endpoint":"https://agenttoll.dev/paid/osint/hn-frontpage","method":"POST","protocol":"x402","price_usd":"0.02","network":"eip155:8453","facilitator":"https://api.cdp.coinbase.com/platform/v2/x402","message":"This is free buyer metadata for an x402 paid work product. 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":"hn_frontpage","category":"OSINT & Intelligence","method":"POST","endpoint":"https://agenttoll.dev/paid/osint/hn-frontpage","priceUsd":"0.02","maxPaymentUsd":"0.02","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":{"limit":"30"},"input":{"limit":"optional int 5-50 default 30","min_points":"optional int min points"},"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 $0.02","resource path must match this endpoint"],"receiptSchema":"https://agenttoll.dev/agenttoll-receipt-v1.md"},"approval_prompt":"This AgentToll call costs $0.02 on Base mainnet. Verify payTo 0x62a0D3d9DF0dE8804983009949c714EaeAFd87F1, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, and maxPayment $0.02 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":"hn_frontpage","description":"HN frontpage live — Algolia front_page tag, points, comments, author, dwell = points/(age_h+2). Cache 10min. Top stories sorted by dwell score for attention-momentum edge.","buyer_value":"Pay $0.02 for HN frontpage live — Algolia front_page tag, points, comments, author, dwell = points/(age_h+2). Cache 10min. Top stories sorted by dwell score for attention-momentum edge.","input":{"limit":"optional int 5-50 default 30","min_points":"optional int min points"},"example":{"limit":"30"},"sample_output":"JSON with source-backed fields, response metadata, and decision/readout fields where the endpoint is a brief.","discovery_queries":["hn frontpage","hn frontpage x402","hn frontpage paid MCP tool","osint & intelligence paid data API for AI agents"],"docs":"https://agenttoll.dev/tools/hn_frontpage"}}