{"uid":"cap_RQbJQCwlnt57RmqpL8IQx","slug":"vexquill-contract-audit-api-a43bca0b","name":"VexQuill Contract Audit API","description":"Automated static security analysis of Solidity smart contracts. Pay $0.005 USDC on Base per audit via x402. No signup, no API key.","url":"https://x402-audit-api.vexquill.deno.net/audit?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"source":{"type":"string","description":"Raw Solidity source code (alternative to address)."},"address":{"type":"string","description":"Base contract address with verified source."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wOA5GXCQH2VDekr5Z1JXm","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs automated static security analysis of Solidity smart contracts, accepting raw source code or a Base contract address as input.","exampleAgentPrompt":"Can you audit this Solidity smart contract for security vulnerabilities? Here's the source code: `pragma solidity ^0.8.0; contract MyToken { ... }`","exampleUseCases":[{"title":"Pre-deployment contract security check","prompt":"Before I deploy this ERC-20 token contract, can you run a security audit on the Solidity source and tell me if there are any vulnerabilities I should fix? Here's the full source code."},{"title":"Audit already-deployed Base contract","prompt":"There's a DeFi contract at address 0x1234abcd... on Base that I'm thinking of interacting with — can you audit it for security issues like reentrancy or access control flaws?"},{"title":"CI pipeline contract vulnerability scan","prompt":"I've got a new version of my staking contract — scan this Solidity source for any known vulnerabilities or common attack vectors before I submit it for review."}],"resultDescription":"A static security analysis report detailing detected vulnerabilities, potential attack vectors, and security issues found in the provided Solidity contract source code or the verified source of the given Base contract address.","failureModes":["Invalid or non-compilable Solidity source code returns an error","Provided Base contract address has no verified source code, causing lookup failure","Neither 'source' nor 'address' field provided, resulting in a bad request error","Payment failure or insufficient USDC balance prevents the audit from running","Contract address not found or not deployed on Base network"],"whenToPreferThis":"Use this endpoint when you need a quick, on-demand, no-signup static security analysis of a Solidity smart contract — either from raw source or from a verified Base contract address — and want to pay per use with $0.005 USDC via x402 without managing API keys.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T18:30:27.378Z","isFirstParty":false,"canonicalSlug":"vexquill-contract-audit-api-a43bca0b"}