# Strale Ethereum Address Validator

> Strale Ethereum Address Validator is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054/call, status unknown (last checked 2026-09-16).

Validates the format and checksum of an Ethereum wallet address, returning a structured result with cryptographic audit record.

## Facts

- Endpoint: POST https://api.strale.io/x402/v2/eth-address-validate
- Price: $0.054/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strale-ethereum-address-validator-221cfc25
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DeTKdbBFUgNBu6I00DUOy

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability strale-ethereum-address-validator-221cfc25 -d '<json body>'
```

Example prompt: Can you check whether this Ethereum address is valid before I send the payment: 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045?

## When to prefer this

Choose this endpoint when you need a fast, auditable Ethereum address validation with cryptographic proof of the check — especially useful in compliance-sensitive workflows, payment pipelines, or agent systems that need tamper-evident logs. Prefer it over a simple client-side regex when you need EIP-55 checksum verification, audit trails, or a trust layer that downstream systems can verify.

## Known failure modes

- Invalid or missing address field returns a validation failure with error detail
- Malformed input (non-hex characters, wrong length) flagged as invalid format
- Network or service errors return standard HTTP error codes
- Expired or insufficient x402 payment token results in 402 Payment Required response

## How this service works

The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.

## Output

Returns a structured validation result indicating whether the submitted Ethereum address is valid, whether the checksum is correct (EIP-55), and any format issues detected. Each response also includes a cryptographic audit record with chain hashing for provenance and compliance tracking.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "Ethereum address (e.g. 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045)"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/strale-ethereum-address-validator-221cfc25/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)