{
  "format": "delx/intent-card/v1",
  "id": "eip55-check-api",
  "intent": "Eip55 Check for an agent workflow",
  "title": "Eip55 Check API for agents",
  "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 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 search, or media generation. Results are advisory; the caller owns authorization and production controls.",
  "keywords": [
    "Eip55 Check API",
    "Eip55 Check for agents",
    "pay per result API",
    "x402 API",
    "no API key"
  ],
  "updated_at": "2026-08-06",
  "canonical_url": "https://commerce.delx.ai/intents/eip55-check-api",
  "machine_url": "https://commerce.delx.ai/intents/eip55-check-api.json",
  "recommendation": {
    "tool_name": "util_eip55_check",
    "service_name": "Delx Eip55 Check",
    "method": "POST",
    "resource": "https://api.delx.ai/api/v1/x402/eip55-check",
    "price_usdc": "0.003",
    "payment_protocols": [
      "x402",
      "mpp"
    ],
    "input_schema": {
      "type": "object",
      "properties": {
        "address": {
          "description": "EVM address (40 hex chars, optional 0x).",
          "type": "string"
        }
      },
      "required": [
        "address"
      ],
      "additionalProperties": true
    },
    "example_input": {
      "address": "0x95222290DD7278Aa3Ddd389Cc1E1d165CC4BAfe5"
    },
    "example_output": {
      "schema": "delx/util-eip55-check/v1",
      "valid": true,
      "is_checksummed": true,
      "expected": "0x95222290DD7278Aa3Ddd389Cc1E1d165CC4BAfe5",
      "algorithm": "keccak256"
    },
    "agentcash": {
      "buy": "npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/eip55-check -m POST -H 'x-delx-source: intent-card-eip55-check-api' --max-amount 0.003 -b '{\"address\":\"0x95222290DD7278Aa3Ddd389Cc1E1d165CC4BAfe5\"}'",
      "max_amount_usdc": "0.003"
    }
  },
  "attribution": {
    "header": "x-delx-source",
    "value": "intent-card-eip55-check-api"
  },
  "evidence": {
    "paid_openapi": "https://api.delx.ai/openapi.x402.json",
    "governed_portfolio": "https://api.delx.ai/x402-portfolio.json",
    "live_contract": "https://api.delx.ai/api/v1/x402/eip55-check"
  }
}