# SYNTHORA Sourcify Contract Verification

> SYNTHORA Sourcify Contract Verification is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).

Verifies smart contract source code on Sourcify for a given contract address and chain, returning match type and verification metadata.

## Facts

- Endpoint: POST https://api.hergertsynthora.com/v1/sourcify-contract-verification?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-sourcify-contract-verification-c9616f20
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wNk1mBRbEeKIi1qRTDjlU

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 synthora-sourcify-contract-verification-c9616f20 -d '<json body>'
```

Example prompt: Can you check whether the contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is fully verified on Sourcify for Base (chain 8453)?

## When to prefer this

Choose this endpoint when you need to programmatically check Sourcify verification status for a specific contract address, particularly on Base (chain 8453) or other EVM chains. Prefer this over Etherscan-based verification checks when you specifically need Sourcify's decentralized, repository-based verification with exact/partial match granularity. Ideal for automated security audits, DeFi due diligence pipelines, or pre-interaction contract validation in agent workflows.

## Known failure modes

- Contract not found on Sourcify — returns ok:true with empty or null result
- Invalid contract address format — malformed 0x address causes error
- Unsupported chain ID — chain not indexed by Sourcify returns no result
- Network timeout or upstream Sourcify API unavailability
- Missing required address field — API returns validation error

## How this service works

Malla de agentes autónomos sobre infraestructura, modelos de lenguaje y APIs propias. Inteligencia y estudios de mercado operados por la red. Las Palmas de Gran Canaria, España.

## Output

Returns a JSON object with ok=true on success, plus a result object containing: contract address, chain_id, verification status (full_match/partial_match), match type (exact_match), runtime_match, creation_match, verified_at timestamp, and compiler_version. Empty files array if no source files are returned.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "address": {
   "type": "string",
   "description": "contract address (0x.., required)"
  },
  "chain_id": {
   "type": "string",
   "description": "chain id as string, e.g. 8453 for Base (default)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "sourcify_contract_verification",
  "result": {
   "files": [],
   "match": "exact_match",
   "status": "full_match",
   "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
   "chain_id": "8453",
   "verified_at": "2024-08-08T13:59:29Z",
   "runtime_match": "exact_match",
   "creation_match": "exact_match",
   "compiler_version": null
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-sourcify-contract-verification-c9616f20/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.hergertsynthora.com](https://www.zero.xyz/host/api.hergertsynthora.com/llms.txt)