# ApexAPI Crypto Contract Verifier

> ApexAPI Crypto Contract Verifier is a paid API for AI agents from apex-api-gamma.vercel.app, paid per call via x402, $0.109163/call, status unknown (last checked 2026-09-14).

Verifies the authenticity and validity of a smart contract on a blockchain network

## Facts

- Endpoint: POST https://apex-api-gamma.vercel.app/api/crypto/contract/verify
- Price: $0.109163/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apexapi-crypto-contract-verifier-5327a69a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_guztMkITwbGmeTmhSQ2iJ

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 apexapi-crypto-contract-verifier-5327a69a -d '<json body>'
```

Example prompt: Can you verify whether the smart contract at address 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984 is a legitimate, verified contract before I interact with it?

## When to prefer this

Use this endpoint when you need to quickly verify the legitimacy or verification status of a smart contract address before interacting with it, sending funds, or recommending it to a user. Prefer this over manual blockchain explorer lookups when operating programmatically in an agent workflow.

## Known failure modes

- Invalid or malformed contract address returns an error
- Contract not found on the specified network returns a not-found response
- Network or RPC timeout causes a service unavailable error
- Unrecognized blockchain identifier returns an unsupported chain error
- Empty query parameter returns a 400 bad request

## How this service works

Crypto, AI, Social Media, Finance, Weather, Tools &amp; more. Pay per call in USDC on Base. No API keys.

## Output

Returns a verification result indicating whether the smart contract is valid and verified, along with associated contract metadata or audit details pulled from on-chain or indexer sources.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Search query or input parameter"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apexapi-crypto-contract-verifier-5327a69a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apex-api-gamma.vercel.app](https://www.zero.xyz/host/apex-api-gamma.vercel.app/llms.txt)