{"uid":"cap_i3nb5uqObWPgNZTPJ-dah","slug":"salt19-base-transaction-status-aae8d3d8","name":"SALT19 Base Transaction Status","description":"SALT19 is an independent applied AI systems lab behind EvoMind governed cognition, the MCP-native Agent Utility Grid, the ARCS research community, AeroClear UAS flight intelligence, and practical software for real-world work.","url":"https://api.salt19.com/v1/base-transaction-status","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"transaction_hash":{"type":"string","pattern":"^0x[0-9a-fA-F]{64}$"}}},"responseSchema":{"type":"json","example":{"state":"PENDING","network":"eip155:8453","gas_used":null,"block_number":null}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_6gCYDuu6XxlRtG_2w6nzn","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up the on-chain status of a Base (EVM) transaction by its hash, returning state, network, gas used, and block number","exampleAgentPrompt":"Can you check the status of my Base network transaction 0x3f1a2b...d4e5 — I want to know if it's still pending or has been confirmed and what block it landed in?","exampleUseCases":[{"title":"Confirm payment settled on-chain","prompt":"I just sent a USDC payment on Base with transaction hash 0xabc123...def456 — can you check whether it's confirmed yet or still pending?"},{"title":"Retrieve gas cost after mint","prompt":"I minted an NFT on Base a few minutes ago, the tx hash is 0x9f8e7d...1a2b3c — can you look up how much gas was used and which block it was included in?"},{"title":"Agent workflow payment verification","prompt":"My automated workflow submitted a transaction to Base with hash 0x4d5e6f...7a8b9c — check if it's confirmed so I know whether to proceed to the next step."}],"resultDescription":"A JSON object containing the transaction state (e.g. PENDING, CONFIRMED), the network identifier (e.g. eip155:8453 for Base), gas used (null if not yet mined), and the block number (null if not yet mined).","failureModes":["Invalid transaction hash format (not matching ^0x[0-9a-fA-F]{64}$) returns a validation error","Transaction hash not found on the Base network returns a not-found or unknown state","Network connectivity issues to the Base RPC may cause timeouts","Payment of $0.01 USDC required per call; missing or invalid x402 payment header will result in 402 Payment Required"],"whenToPreferThis":"Use this endpoint when you need to check the status of a specific transaction on the Base (EIP-155:8453) network and want a simple, structured JSON response with state, gas, and block info. Prefer it over raw RPC calls when operating within the SALT19 Agent Utility Grid or when you need a metered, agent-friendly interface without managing your own RPC provider.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:51:35.191Z","isFirstParty":false}