{"slug":"api-delx-ai-api-v1-x402-eip55-check-67b3d6","title":"Check whether an address already matches its EIP-55 checksum form — call when ve","host":"api.delx.ai","method":"POST","resource":"https://api.delx.ai/api/v1/x402/eip55-check","category":"code","description":"Check whether an address already matches its EIP-55 checksum form — call when verifying an address already matches EIP-55 form. Use for chain input hygiene without live RPC—adjacent to OneSource-class small chain reads, but static/local only so rights and margin stay clear. Returns deterministic mac","price_listed":0.003,"price_asked":0.003,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":1258,"reported_calls_30d":3,"reported_payers_30d":3,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"address":"0x95222290DD7278Aa3Ddd389Cc1E1d165CC4BAfe5"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"additionalProperties":true,"properties":{"address":{"description":"EVM address (40 hex chars, optional 0x).","type":"string"}},"required":["address"],"type":"object"},"bodyType":{"const":"json","type":"string"},"method":{"const":"POST","type":"string"},"type":{"const":"http","type":"string"}},"required":["type","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"additionalProperties":true,"description":"Bounded first-party JSON result; input is processed in memory and not retained.","properties":{"algorithm":{"type":"string"},"expected":{"type":"string"},"is_checksummed":{"type":"boolean"},"schema":{"type":"string"},"valid":{"type":"boolean"}},"type":"object"},"type":{"const":"json","type":"string"}},"required":["type","example"],"type":"object"}},"required":["input","output"],"type":"object"},"history":[{"day":"2026-10-10","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.003,"price_match":true,"latency_ms":1258,"error":null}],"description_full":"Check whether an address already matches its EIP-55 checksum form — call when verifying an address already matches EIP-55 form. Use for chain input hygiene without live RPC—adjacent to OneSource-class small chain reads, but static/local only so rights and margin stay clear. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, and no claim of live chain tip, web se…","last_updated":"2026-10-08T06:11:38.791Z","schemes":["exact"]}