{"id":"990e30e1-76e","name":"StallRow — Tx Decoder","description":"Decode one Base transaction into plain English: sender, receiver, ETH value, status, the known method behind the selector, every ERC-20 transfer it made, and a one-sentence summary. Use this when an agent needs to explain or verify what a transaction actually did before acting on it.","endpoint_url":"https://stall-row-production.up.railway.app/v1/tx-decoder","endpoint_canonical":"https://stall-row-production.up.railway.app/v1/tx-decoder","category":"data.crypto","kind":"api","price_amount":0.002,"price_currency":"USDC","chains":["base"],"request_schema":{"type":"object","properties":{"tx_hash":{"type":"string"}},"required":["tx_hash"],"example":{"tx_hash":"0xabababababababababababababababababababababababababababababababab"}},"response_schema":{"type":"object","properties":{"tx_hash":{"type":"string"},"block_number":{"type":["integer","null"]},"from":{"type":["string","null"]},"to":{"type":["string","null"]},"value_eth":{"type":"string"},"status":{"type":"string"},"method_id":{"type":["string","null"]},"method":{"type":["string","null"]},"method_description":{"type":["string","null"]},"gas_used":{"type":["integer","null"]},"erc20_transfers":{"type":"array","items":{"type":"object","properties":{"token":{"type":["string","null"]},"from":{"type":"string"},"to":{"type":"string"},"amount_raw":{"type":["string","null"]}},"required":["from","to"]}},"summary":{"type":"string"}},"required":["tx_hash","value_eth","status","erc20_transfers","summary"],"example":{"tx_hash":"0xabababababababababababababababababababababababababababababababab","block_number":22104511,"from":"0x1111111111111111111111111111111111111111","to":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","value_eth":"0","status":"success","method_id":"0xa9059cbb","method":"transfer","method_description":"ERC-20 transfer(to, amount)","gas_used":51604,"erc20_transfers":[{"token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","from":"0x1111111111111111111111111111111111111111","to":"0x2222222222222222222222222222222222222222","amount_raw":"12500000"}],"summary":"ERC-20 transfer(to, amount) from 0x1111111111111111111111111111111111111111 to 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 with 1 ERC-20 transfer(s) — status: success."}},"sample_query":"https://stall-row-production.up.railway.app/sample/tx-decoder","facilitator_url":null,"status":"verified","delisted_reason":null,"origin":"submitted","ephemeral":false,"created_at":1793550025,"updated_at":1793551952,"status_changed_at":1793551952,"embedding_synced_at":1793550027,"score":1,"p50_latency_ms":567,"p95_latency_ms":1353,"p99_latency_ms":2204,"probe_count":232,"probes_passed":232,"last_ok_at":1794019359,"consecutive_failures":0,"last_probed_at":1794019359,"probe_interval_s":2040,"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":"0x097f9685D1e0752bF8B02d61E5Ce9be7eA0FBA7F","amount_atomic":"2000","amount_usd":0.002,"domain_name":"USD Coin","domain_version":"2","observed_at":1794019359,"obs_first_seen_at":1793550032,"price_changed_at":null,"pay_to_changed_at":null,"payto_unstable":false,"payto_distinct_recent":1,"onchain_provider_status":null,"onchain_payto_checked":"0x097f9685d1e0752bf8b02d61e5ce9be7ea0fba7f","onchain_checked_at":1794018995,"onchain_last_attempt_at":1794018995,"onchain_provider_error":0,"onchain_source":"index","header_bytes":5459,"verified_via":"POST","testnet":false,"payment_protocols":["x402"],"mpp_methods":null,"mpp_offers":null,"mpp_note":null,"onchain_payto_shared_listings":40,"onchain_count_capped":false,"onchain_shape":null,"onchain_daily":[{"day":"2026-10-09","tx":1,"payers":1,"usd":2.997602},{"day":"2026-10-12","tx":1,"payers":1,"usd":0.02},{"day":"2026-10-23","tx":62,"payers":2,"usd":3.763},{"day":"2026-10-24","tx":6,"payers":2,"usd":0.05},{"day":"2026-10-25","tx":78,"payers":6,"usd":5.029},{"day":"2026-10-26","tx":9,"payers":3,"usd":3.195},{"day":"2026-10-27","tx":20,"payers":3,"usd":72.06456},{"day":"2026-10-28","tx":11,"payers":1,"usd":11.46},{"day":"2026-10-29","tx":44,"payers":3,"usd":6.082},{"day":"2026-10-30","tx":17,"payers":2,"usd":1.4},{"day":"2026-10-31","tx":7,"payers":1,"usd":1.155},{"day":"2026-11-01","tx":28,"payers":2,"usd":2.5},{"day":"2026-11-02","tx":20,"payers":2,"usd":0.717},{"day":"2026-11-03","tx":5,"payers":2,"usd":0.1},{"day":"2026-11-04","tx":3,"payers":1,"usd":0.09},{"day":"2026-11-05","tx":27,"payers":3,"usd":0.315},{"day":"2026-11-06","tx":11,"payers":2,"usd":0.247}],"latest_purchase_delivered":true,"latest_purchase_at":1793565051,"paid_verification_latest":{"at":1793565051,"delivered":true,"tx_hash":"0xe657f940a513e28bbdd429bee2a46960efa8a40e2731073777ea85cfc3cc3b7c","amount_usdc":0.002,"failure_reason":null,"note":"Most recent settled purchase by the nohumans scout; it delivered.","at_iso":"2026-11-01T20:30:51Z","age_days":5},"paid_verification":{"verified":true,"verified_at":1793565051,"tx_hash":"0xe657f940a513e28bbdd429bee2a46960efa8a40e2731073777ea85cfc3cc3b7c","amount_usdc":0.002,"schema_validated":true,"note":"Real USDC paid and response inspected by nohumans scout. One-time verification, not continuous.","verified_at_iso":"2026-11-01T20:30:51Z","age_days":5},"has_sample":true,"method_note":"This endpoint does not serve its 402 to a bare GET; the payment challenge was observed on POST with a JSON body. Call it with POST.","paid_verified":true,"paid_verified_at":1793565051,"paid_depth":{"rung":"paid_verified","deliveries":1,"span_weeks":1,"first_ok_at":1793565051,"last_ok_at":1793565051,"last_attempt_ok":1,"through_change":false,"first_ok_at_iso":"2026-11-01T20:30:51Z","last_ok_at_iso":"2026-11-01T20:30:51Z"},"payto_sentinel":false,"payto_note":null,"evidence_tier":"paid_verified","evidence_note":"We paid this endpoint real USDC and confirmed settlement on-chain; the response was inspected.","verdict_age_seconds":1250,"probe_tier":"host_limited","next_check_by":1794021399,"next_check_basis":"host-limited: we probe at most 2 of one host's listings per probe run (1 while it is answering 429), one run every 2 minutes, so a host with many listings has each one checked in turn; the interval is the larger of the listing's tier interval and that host's turn, so it is not hammered and the record does not promise a check the host limit cannot keep; this listing: every 34 minutes; a record past next_check_by is stale by our own rule","last_probed_at_iso":"2026-11-07T02:42:39Z","next_check_by_iso":"2026-11-07T03:16:39Z","status_changed_at_iso":"2026-11-01T16:52:32Z","paid_verified_at_iso":"2026-11-01T20:30:51Z","probes_failed":0,"onchain_scope":"wallet-level, NOT this endpoint's: the payTo address is shared by 40 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 40 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":40,"pay_to":"0x097f9685d1e0752bf8b02d61e5ce9be7ea0fba7f","tx_count_30d":350,"unique_payers_30d":12,"volume_usd_30d":111.185162},"onchain_tx_count_30d":350,"onchain_unique_payers_30d":12,"onchain_volume_usd_30d":111.185162,"created_at_iso":"2026-11-01T16:20:25Z","updated_at_iso":"2026-11-01T16:52:32Z","embedding_synced_at_iso":"2026-11-01T16:20:27Z","last_ok_at_iso":"2026-11-07T02:42:39Z","observed_at_iso":"2026-11-07T02:42:39Z","obs_first_seen_at_iso":"2026-11-01T16:20:32Z","onchain_checked_at_iso":"2026-11-07T02:36:35Z","onchain_last_attempt_at_iso":"2026-11-07T02:36:35Z","latest_purchase_at_iso":"2026-11-01T20:30:51Z","paid_verified_age_days":5,"latest_purchase_age_days":5,"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":"990e30e1-76e","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: 990e30e1-76e\ntx_hash: <tx_hash, lowercase>\nok: <true|false>","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":1794019359,"x402_version":2,"challenge_transport":"header","scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0x097f9685D1e0752bF8B02d61E5Ce9be7eA0FBA7F","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":1793550032,"price_matches_listing":true,"payto_stable_since":1793550032,"checked_at_iso":"2026-11-07T02:42:39Z","price_stable_since_iso":"2026-11-01T16:20:32Z","payto_stable_since_iso":"2026-11-01T16:20:32Z"}}