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SYNTHORA Multi-LLM Smart Contract Audit
x402
SYNTHORA Multi-LLM Smart Contract Audit is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.32/call, status unknown (last checked 2026-09-15).
Audits Solidity or Vyper smart contract source code using three independent LLMs (security, logic, gas perspectives) plus static pattern scanning, returning a severity verdict and an Ed25519-signed report publishable on-chain.
Price / call$0.32
Success—
StatusUnknown
How this service works
Multi-LLM Smart Contract Audit: 3 independent LLM perspectives (security, logic, gas) + static pattern scan on Solidity/Vyper source. Severity: clean/low/medium/high/critical. Ed25519-signed, publishable on-chain. POST {"source":"pragma solidity...","language":"solidity"} or {"address":"0x..","chain":"base"} for Sourcify-verified contracts.
Output
Returns a structured audit report containing findings from three independent LLM perspectives (security, logic, and gas optimization) plus a static pattern scan result, a severity classification (clean/low/medium/high/critical), and an Ed25519-signed payload suitable for on-chain publication.
Example use cases
Pre-deployment contract security check
“I'm about to deploy this Solidity ERC-20 token contract to Base — can you audit it for critical vulnerabilities, logic flaws, and gas inefficiencies before I push it live? Here's the source code: pragma solidity ^0.8.20; ...”
Audit verified contract by address
“There's a Sourcify-verified contract at 0x1234abcd...5678 on Base that I'm considering integrating with — can you pull it and run a full multi-LLM security audit so I know the highest severity issue found?”
Generate on-chain publishable audit report
“I need an Ed25519-signed audit report for this Vyper contract source so I can publish the audit result on-chain as proof of review — please audit it and give me the signed output along with the severity rating.”
Technical details
Endpoint
POSThttps://api.hergertsynthora.com/v1/codeauditWhen to prefer
Choose this endpoint when you need a multi-perspective, cryptographically signed smart contract audit that is publishable on-chain, rather than a single-model review. It is especially valuable for pre-deployment security gates, DeFi protocol due diligence, or when you need a verifiable audit artifact. It supports both raw source input and Sourcify-verified on-chain addresses, making it flexible for both development and post-deployment review workflows.
Side effects
- Invalid or unparseable Solidity/Vyper source returns a parse error
- Contract address not found on Sourcify for the specified chain returns a 404-style error
- Unsupported chain identifier causes a validation error
- Source code exceeding size limits may be rejected
- Payment failure via x402 protocol returns 402 Payment Required
- Network timeout for large contracts may cause incomplete analysis
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | |
| source | string | Solidity/Vyper source to audit |
| address | string | OR a Sourcify-verified contract address |
| language | string |
Tags
x402
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