{"uid":"cap_lVam3luppjZ7OAzsO_lYk","slug":"base-nonce-readiness-checker-e16094e2","name":"Base Nonce Readiness Checker","description":"Compare confirmed and pending Base nonces before an autonomous transaction is signed.","url":"https://nohands-coinbase-bazaar.bytoken2023.workers.dev/v1/x402/base/nonce-readiness?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string","example":"0x94F751f04b98507D31b500b7Ed50bE68A1514873","pattern":"^0x[a-fA-F0-9]{40}$","description":"Base account whose transaction nonce should be checked."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"ready":{"type":"boolean"},"address":{"type":"string"},"network":{"type":"string"},"product":{"type":"string"},"fetched_at":{"type":"string"},"provenance":{"type":"object","properties":{"rpc_providers":{"type":"array","items":{"type":"string"}},"pending_block_tag":{"type":"string"},"confirmed_block_tag":{"type":"string"}},"additionalProperties":true},"decision_hint":{"type":"string"},"pending_nonce":{"type":"string"},"schema_version":{"type":"string"},"confirmed_nonce":{"type":"string"},"pending_transaction_count":{"type":"string"}},"x-schema-family":"OPERATION_RUNTIME_RESULT","x-schema-authority":"REPRESENTATIVE_RUNTIME_FIXTURE","additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003004","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.003004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JAytVSnJMv4YI52z_mTRm","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003004","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Compares confirmed and pending Base blockchain nonces to determine if an autonomous agent's wallet is ready to sign and submit a new transaction safely.","exampleAgentPrompt":"Before you sign and submit the next payment transaction, check if my Base wallet 0xAbc123... has any nonce conflicts — compare the confirmed and pending nonces and tell me if it's safe to proceed.","exampleUseCases":[{"title":"Pre-payment nonce safety check","prompt":"Before sending the next x402 payment from wallet 0xDe45...F7, check whether the confirmed and pending nonces on Base are aligned and it's safe to sign a new transaction right now."},{"title":"Detecting a stuck pending transaction","prompt":"My agent wallet 0x1aB2...9cD seems stuck — can you compare its confirmed and pending nonces on Base to see if there's a nonce gap that would block a new transaction from going through?"},{"title":"Autonomous agent pre-flight validation","prompt":"I'm about to kick off an autonomous agent workflow that submits Base transactions — run a nonce readiness check on 0xF00...BAR first so we don't accidentally broadcast a conflicting or out-of-order transaction."}],"resultDescription":"Returns the current confirmed nonce, pending nonce, and a readiness verdict indicating whether it is safe for an autonomous agent to sign and submit a new transaction — including any detected nonce gap or conflict that could cause the transaction to be rejected or queue behind a stuck pending transaction.","failureModes":["Invalid or malformed Base wallet address returns an error response","RPC connectivity issues to Base network result in timeout or unavailable status","Address with no transaction history may return edge-case nonce values requiring agent interpretation","Rapidly changing chain state may cause stale nonce snapshot between check and actual submission"],"whenToPreferThis":"Use this endpoint immediately before an autonomous agent signs any Base transaction, especially in x402 payment flows or multi-step agent workflows where nonce collisions or stuck pending transactions could cause failures. Prefer this over reading raw RPC nonce values yourself when you need a simple pass/fail readiness verdict rather than raw chain data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-02T18:33:04.117Z","isFirstParty":false,"canonicalSlug":"base-nonce-readiness-checker-e16094e2"}