{"data":{"slug":"crier","name":"Crier","description":"Outbound messaging for AI agents, paid per message. POST /v1/email ($0.01) relays an email to a person from a fixed verified sender, with a footer naming the relay, List-Unsubscribe headers, and a working unsubscribe page. POST /v1/webhook ($0.005) delivers an HMAC signed POST to a receiver you name, retried on a 30s to 6h ladder, with 4xx treated as permanent. Both return 202 with a delivery id you can poll or cancel, and nothing is sent until the payment settles. Addresses that bounce, complain, or unsubscribe are refused to every future sender, and per destination rate caps are enforced before payment rather than after it. 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Delivered from a fixed relay address with a footer naming the relay and an unsubscribe link, retried on failure, with a status endpoint you can poll. Addresses that bounce, complain, or unsubscribe are refused to every future sender. Up to 4 per hour and 12 per day to one address. One-time $0.01, no account needed.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-09-21T11:10:10.295Z","last_seen_at":"2026-10-24T03:54:32.927Z","variable_amount":false,"min_price_usd":0.01,"networks":["BSE","SOL"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"10000","price_usd":"0.0100000000","pay_to":"0x835323C73DD9cF4D0D23054d1ee7C11CFea34d4A","max_timeout_seconds":120},{"scheme":"exact","network":"solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp","network_caip2":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","asset_address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","asset_address_norm":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","asset_name":"USDC","price":"10000","price_usd":"0.0100000000","pay_to":"8cgL7Rdey8GPcfEm8gUDsHpKjq4SD5CjADpJDFdTMFtW","max_timeout_seconds":120},{"scheme":"exact","network":"solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp","network_caip2":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","asset_address":"So11111111111111111111111111111111111111112","asset_address_norm":"So11111111111111111111111111111111111111112","asset_name":"UNKNOWN","price":"99083","price_usd":null,"pay_to":"8cgL7Rdey8GPcfEm8gUDsHpKjq4SD5CjADpJDFdTMFtW","max_timeout_seconds":120}],"pay_to_divergence":null},{"id":"36ed8a77-645b-40d6-951d-712c566e23ca","method":"GET","path":"/v1/webhook","description":"Deliver a signed webhook from an AI agent to a public URL: JSON or text body up to 16KB, POST or PUT, optional custom X- headers. Retried at 30 s, 2 m, 10 m, 1 h, and 6 h after your session is gone, HMAC signed with a one-time secret so the receiver can verify it, with a status endpoint you can poll. One-time $0.005, no account needed.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-09-21T11:10:10.295Z","last_seen_at":"2026-10-24T03:54:32.944Z","variable_amount":false,"min_price_usd":0.005,"networks":["BSE","SOL"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"5000","price_usd":"0.0050000000","pay_to":"0x835323C73DD9cF4D0D23054d1ee7C11CFea34d4A","max_timeout_seconds":120},{"scheme":"exact","network":"solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp","network_caip2":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","asset_address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","asset_address_norm":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","asset_name":"USDC","price":"5000","price_usd":"0.0050000000","pay_to":"8cgL7Rdey8GPcfEm8gUDsHpKjq4SD5CjADpJDFdTMFtW","max_timeout_seconds":120},{"scheme":"exact","network":"solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp","network_caip2":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","asset_address":"So11111111111111111111111111111111111111112","asset_address_norm":"So11111111111111111111111111111111111111112","asset_name":"UNKNOWN","price":"49542","price_usd":null,"pay_to":"8cgL7Rdey8GPcfEm8gUDsHpKjq4SD5CjADpJDFdTMFtW","max_timeout_seconds":120}],"pay_to_divergence":null}],"pay_to_changes":[],"assessment":{"updated_at":"2026-10-24T03:43:01.346Z","input_hash":"143ef161c3b30ade6f9e512d191b9957fb66b9e3f0afb771f09cf03bfa9d1d8c","model_id":null,"prompt_version":null,"reliability":{"uptime":{"24h":100,"7d":100,"30d":100,"90d":99.1},"response_p95_ms":283,"avg_response_ms":423,"last_checked_at":"2026-10-24T03:37:31.428Z","consecutive_failures":0,"total_checks":2689},"compliance":{"grade":"A","passed":14,"total":14,"checks":[{"id":"payload_captured","label":"402 payload captured","pass":true},{"id":"accepts_present","label":"accepts[] array present","pass":true},{"id":"payto_recoverable","label":"payTo address recoverable","pass":true},{"id":"payto_conformant","label":"payTo at accepts[0].payTo (conformant shape)","pass":true},{"id":"payto_shape","label":"payTo is a valid on-chain address","pass":true},{"id":"price_present","label":"atomic price declared","pass":true},{"id":"price_sane","label":"atomic price in a sane range","pass":true},{"id":"asset_declared","label":"asset (token) address declared","pass":true},{"id":"network_caip2","label":"network resolves to CAIP-2","pass":true},{"id":"scheme_declared","label":"payment scheme declared","pass":true},{"id":"transport_https","label":"served over HTTPS","pass":true},{"id":"x402_version_current","label":"declares the current x402 version (2)","pass":true},{"id":"eip712_domain_extra","label":"EIP-712 domain parameters present on every EVM entry","pass":true},{"id":"version_channel_coherent","label":"x402 v2 envelope delivered in the payment-required header","pass":true}],"pay_to_source":"payTo","pay_to_location":"accept","staleness":{"probe_failing":false,"last_success_at":"2026-10-24T03:54:32.962Z","envelope_captured_at":"2026-10-24T03:54:32.962Z"}},"site":{"homepage":true,"openapi":true,"pricing":true,"llms_txt":true,"robots":true,"terms":true,"checked_at":"2026-10-24T02:43:02.536Z"},"domain":{"age_days":87,"registrar":"Cloudflare, Inc.","free_host":false,"created_date":"2026-07-24T04:16:57.000Z","checked_at":"2026-10-20T01:23:01.739Z"},"economics":{"price_usd":0.005,"price_atomic":"5000","model":"tiered","category_percentile":35,"stability":1,"price_max_usd":0.01,"category_percentile_max":23,"endpoint_count":2,"distinct_price_count":2},"risk":{"level":"clean","flags":[]},"synthesis":null,"traction":{"status":"measured","volume_usd_30d":0.4,"tx_count_30d":40,"unique_buyers_30d":2,"last_settlement_at":"2026-10-15T06:33:55Z","top_buyer_share_30d":0.7499999999999999,"top_3_buyers_share_30d":1,"concentrated_volume":false,"trend_7d_vs_30d":0,"shared_payout":false,"shared_with":0,"measured_networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d"],"first_settlement_at":"2026-09-15T17:20:18Z","volume_usd_all_time":0.5,"tx_count_all_time":46,"median_settlement_usd_30d":0.01,"max_settlement_usd_30d":0.01,"settled_via":["coinbase"],"settled_via_detail":[{"id":"coinbase","volume_usd_30d":0.4,"tx_count_30d":40}],"shared_with_services":[],"pro_quota_share":1,"caveat":"Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.","all_time_caveat":"All-time is floored at the start of our harvest window, not the service full history."}}},"provenance":{"license":"CC-BY-4.0","attribution_required":true,"attribution":"Data: x402-list.com (CC BY 4.0)","cite_as":"https://x402-list.com/services/crier","source":"https://x402-list.com"}}