{"slug":"api-delx-ai-api-v1-x402-evm-nonce-gap-check-e800f0","title":"EVM Nonce Gap Check","host":"api.delx.ai","method":"POST","resource":"https://api.delx.ai/api/v1/x402/evm-nonce-gap-check","category":"market","description":"EVM Nonce Gap Check: calculates the gap between pending and proposed transaction nonces using only bounded caller-supplied values. Call when you need a bounded evm nonce gap check result before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Ret","price_listed":0.001,"price_asked":0.001,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":1275,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"maximum_gap":1,"pending_nonce":12,"proposed_nonce":14},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"properties":{"body":{"$schema":"https://json-schema.org/draft/2020-12/schema","additionalProperties":false,"properties":{"maximum_gap":{"description":"Maximum Gap supplied to EVM Nonce Gap Check; used only for this bounded calculation and processed in memory without retention.","type":"integer"},"pending_nonce":{"description":"Pending Nonce supplied to EVM Nonce Gap Check; used only for this bounded calculation and processed in memory without retention.","type":"integer"},"proposed_nonce":{"description":"Proposed Nonce supplied to EVM Nonce Gap Check; used only for this bounded calculation and processed in memory without retention.","type":"integer"}},"required":["pending_nonce","proposed_nonce","maximum_gap"],"type":"object"},"bodyType":{"const":"json","type":"string"},"method":{"const":"POST","type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"additionalProperties":true,"description":"Versioned bounded first-party JSON result with input evidence; caller data is processed in memory and not retained.","properties":{"evidence":{"additionalProperties":true,"properties":{"external_calls":{"type":"integer"},"input_sha256":{"type":"string"},"retained":{"type":"boolean"}},"type":"object"},"operation":{"type":"string"},"result":{"additionalProperties":true,"properties":{"gap":{"type":"integer"},"possible_replacement":{"type":"boolean"},"within_budget":{"type":"boolean"}},"type":"object"},"schema":{"type":"string"},"status":{"type":"string"}},"type":"object"}},"required":["input","output"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.001,"price_match":true,"latency_ms":1275,"error":null}],"description_full":"EVM Nonce Gap Check: calculates the gap between pending and proposed transaction nonces using only bounded caller-supplied values. Call when you need a bounded evm nonce gap check result before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for EVM Nonce Gap Check as versioned deterministic JSON. Price: $0.001 USDC via x402 on B…","last_updated":"2026-09-19T15:56:07.267Z","schemes":["exact"]}