{"uid":"cap_X4fmutcJ4MNaeejqKn5qM","slug":"agent-guard-blockchain-address-validator-b00c6ad0","name":"Agent Guard – Blockchain Address Validator","description":"Safety and trust layer for AI agents: PII redaction, scam/phishing text scan, EVM/Solana address validation, IBAN checks, JSON repair, deep on-chain wallet risk scoring, x402 counterparty endpoint reputation checks. Free discovery: /openapi.json, /.well-known/x402, /v1/capabilities, /mcp (tools/list). REST + MCP. Pay with USDC via x402 — no API keys.","url":"https://agent-guard.annushka1190.workers.dev/v1/address/validate","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string","description":"EVM or Solana address"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"ok":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_afxsqKPmeA2x80wwtf9-W","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates EVM and Solana blockchain addresses, checking format correctness and EVM checksum validity","exampleAgentPrompt":"Before I send funds, can you validate that this address is a legitimate Ethereum address with a correct checksum: 0x742d35Cc6634C0532925a3b844Bc454e4438f44e?","exampleUseCases":[{"title":"Pre-transaction EVM address check","prompt":"I'm about to send USDC to 0xAbCd1234abcd1234ABCD1234abcd1234ABCD1234 — can you validate it's a properly checksummed Ethereum address before I proceed?"},{"title":"Solana wallet address verification","prompt":"Check whether DRpbCBMxVnDK7maPM5tGv6MvB3v1sRMC86PZ8okm38oi is a valid Solana wallet address."},{"title":"Agent payment pipeline guard","prompt":"My agent is about to pay out to this address: 0x1234567890abcdef1234567890abcdef12345678 — run it through Agent Guard's address validator and tell me if the format and EVM checksum are both OK before releasing funds."}],"resultDescription":"A JSON object indicating the detected chain (e.g. 'evm' or 'solana'), a boolean 'valid' flag showing whether the address is correctly formatted, and a 'checksumOk' boolean (for EVM addresses) indicating whether the EIP-55 mixed-case checksum is correct.","failureModes":["Missing or empty address query parameter — likely returns an error or invalid response","Unrecognized address format that matches neither EVM nor Solana patterns — may return valid:false with no chain identified","Malformed input (e.g. whitespace-padded address) — checksum may fail even for otherwise correct addresses","Payment failure via x402 if USDC balance is insufficient — request blocked before processing"],"whenToPreferThis":"Choose this endpoint when an AI agent needs a lightweight, pay-per-call blockchain address check with no API key setup — ideal for safety guardrails before executing crypto payments, onboarding user wallets, or filtering user-supplied addresses in agentic workflows. Prefer it over full node RPC calls when you only need format and checksum validation, not on-chain state.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:35:39.698Z","isFirstParty":false}