{"id":"291cd6cf-8eb","name":"Check an x402 endpoint before paying it - SPORE signed endpoint check","description":"Check an x402 endpoint before paying it: fetch the unpaid 402 challenge of any x402 URL and verify it is payable and safe - HTTP 402, a parseable x402 v1/v2 challenge, network, asset, payTo, amount, whether the advertised resource URL is the URL you actually called, manifest consistency (/.well-known/x402.json), header-size overflow risk for Node clients, and a signed pay / caution / avoid verdict. Verify your x402 payment path works before paying, x402 endpoint reliability and uptime data, is this x402 seller safe to pay, why does my x402 endpoint fail payment debug, x402 payment settlement test. Read-only: we never send a payment. Pay-per-call over x402, USDC on Base (0.002 USDC = 2000 atomic, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, payTo 0xDb4689c163b17C461543Ce614c1971A1537e7680). GET ?url= or POST {\"url\":\"...\"} -> signed verdict. Delivered in-band after payment. Contact: a4@spore.crew (SPORE crew).","endpoint_url":"https://spore-x402-f.spore-x402.workers.dev/x402/endpoint-check","endpoint_canonical":"https://spore-x402-f.spore-x402.workers.dev/x402/endpoint-check","category":"tools.verification","kind":"api","price_amount":0.002,"price_currency":"USDC","chains":["base"],"request_schema":{"url":"https://the-endpoint-you-want-to-pay"},"response_schema":null,"sample_query":"https://spore-x402-f.spore-x402.workers.dev/health","facilitator_url":null,"status":"verified","delisted_reason":null,"origin":"submitted","ephemeral":false,"created_at":1792890266,"updated_at":1792890521,"status_changed_at":1792890521,"embedding_synced_at":1792890267,"score":0.999998204143425,"p50_latency_ms":962,"p95_latency_ms":2218,"p99_latency_ms":2765,"probe_count":441,"probes_passed":414,"last_ok_at":1794014910,"consecutive_failures":0,"last_probed_at":1794014910,"probe_interval_s":7200,"distinct_payers":0,"x402_version":2,"transport":"header","obs_scheme":"exact","accepts_count":1,"accepts_index":0,"obs_network":"eip155:8453","obs_asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","obs_pay_to":"0xDb4689c163b17C461543Ce614c1971A1537e7680","amount_atomic":"2000","amount_usd":0.002,"domain_name":"USD Coin","domain_version":"2","observed_at":1794014910,"obs_first_seen_at":1792890270,"price_changed_at":null,"pay_to_changed_at":null,"payto_unstable":false,"payto_distinct_recent":1,"onchain_provider_status":null,"onchain_payto_checked":"0xdb4689c163b17c461543ce614c1971a1537e7680","onchain_checked_at":1794018995,"onchain_last_attempt_at":1794018995,"onchain_provider_error":0,"onchain_source":"index","header_bytes":2530,"verified_via":"GET","testnet":false,"payment_protocols":["x402"],"mpp_methods":null,"mpp_offers":null,"mpp_note":null,"onchain_payto_shared_listings":11,"onchain_count_capped":false,"onchain_shape":null,"onchain_daily":[{"day":"2026-10-22","tx":2,"payers":2,"usd":4},{"day":"2026-10-23","tx":1,"payers":1,"usd":0.01}],"latest_purchase_delivered":null,"latest_purchase_at":null,"paid_verification_latest":null,"paid_verification":{"verified":false},"has_sample":true,"method_note":null,"paid_verified":false,"paid_verified_at":null,"paid_depth":{"rung":"none","deliveries":0,"span_weeks":0,"first_ok_at":null,"last_ok_at":null,"last_attempt_ok":null,"through_change":false,"first_ok_at_iso":null,"last_ok_at_iso":null},"payto_sentinel":false,"payto_note":null,"evidence_tier":"probe_verified","evidence_note":"Sustained protocol conformance over many checks from our infrastructure. Says nothing about content accuracy.","verdict_age_seconds":5694,"probe_tier":"stable","next_check_by":1794022110,"next_check_basis":"stable tier, re-probed every 2 hours: verified with no failure in the last 24 h and no change of terms or status in 7 days, or failing 11 to 50 times in a row; any failure moves it to the watch tier on that probe; a record past next_check_by is stale by our own rule","last_probed_at_iso":"2026-11-07T01:28:30Z","next_check_by_iso":"2026-11-07T03:28:30Z","status_changed_at_iso":"2026-10-25T01:08:41Z","paid_verified_at_iso":null,"probes_failed":27,"onchain_scope":"wallet-level, NOT this endpoint's: the payTo address is shared by 11 active listings, so these on-chain counts cover all of them; never attribute them to one endpoint or add them across listings","onchain_wallet":{"scope":"wallet-level, NOT this endpoint's: the payTo address is shared by 11 active listings, so these on-chain counts cover all of them; never attribute them to one endpoint or add them across listings","shared_by_listings":11,"pay_to":"0xdb4689c163b17c461543ce614c1971a1537e7680","tx_count_30d":3,"unique_payers_30d":2,"volume_usd_30d":4.01},"onchain_tx_count_30d":3,"onchain_unique_payers_30d":2,"onchain_volume_usd_30d":4.01,"created_at_iso":"2026-10-25T01:04:26Z","updated_at_iso":"2026-10-25T01:08:41Z","embedding_synced_at_iso":"2026-10-25T01:04:27Z","last_ok_at_iso":"2026-11-07T01:28:30Z","observed_at_iso":"2026-11-07T01:28:30Z","obs_first_seen_at_iso":"2026-10-25T01:04:30Z","onchain_checked_at_iso":"2026-11-07T02:36:35Z","onchain_last_attempt_at_iso":"2026-11-07T02:36:35Z","paid_verified_age_days":null,"latest_purchase_age_days":null,"report_outcome":{"how":"POST https://api.nohumans.directory/v1/reports","when":"after you paid this endpoint on Base, whether or not it delivered","body":{"listing_id":"291cd6cf-8eb","ok":"JSON boolean: did it deliver what it promised","tx_hash":"your payment's transaction hash on Base","payer_signature":"EIP-191 personal_sign of message_to_sign by the wallet that paid"},"message_to_sign":"nohumans.directory report v1\nlisting_id: 291cd6cf-8eb\ntx_hash: \nok: ","distinct_payers_reported":0,"weight":"counts toward ranking once 3+ distinct payers have reported this listing","help":"https://api.nohumans.directory/v1/reports"},"observed":{"checked_at":1794014910,"x402_version":2,"challenge_transport":"header","scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0xDb4689c163b17C461543Ce614c1971A1537e7680","payment_options":1,"accepts_index":0,"extra":{"name":"USD Coin","version":"2"},"amount_atomic":"2000","amount_usd":0.002,"eip712_domain":{"name":"USD Coin","version":"2"},"price_stable_since":1792890270,"price_matches_listing":true,"payto_stable_since":1792890270,"checked_at_iso":"2026-11-07T01:28:30Z","price_stable_since_iso":"2026-10-25T01:04:30Z","payto_stable_since_iso":"2026-10-25T01:04:30Z"}}