{"uid":"cap_4-PAtDT_TGQHWq3z7O6cz","slug":"no-hands-ai-rpc-preflight-checker-088e94c8","name":"NO HANDS AI RPC Preflight Checker","description":"Preflight an agent RPC or x402 chain-data request before payment: endpoint origin, method risk, chain fit, price, and budget checks.","url":"https://nohands-coinbase-bazaar.bytoken2023.workers.dev/v1/x402/agent/rpc-preflight?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["endpoint_url","chain","method"],"properties":{"chain":{"type":"string","example":"base","pattern":"^[A-Za-z0-9:_ -]{2,80}$","description":"Requested chain or CAIP-2 network label."},"method":{"type":"string","example":"eth_blockNumber","pattern":"^[A-Za-z0-9_.:-]{2,80}$","description":"RPC method, REST operation, or query action."},"endpoint_url":{"type":"string","example":"https://x402.example.com/rpc/base","pattern":"^https?://","maxLength":2048,"description":"RPC, x402, REST, or indexed chain-data endpoint URL."},"max_price_usdc":{"type":"string","example":"0.001","pattern":"^[0-9]+(?:\\.[0-9]{1,6})?$","description":"Maximum acceptable price for this request."},"session_budget_usdc":{"type":"string","example":"1.00","pattern":"^[0-9]+(?:\\.[0-9]{1,6})?$","description":"Remaining session budget available to the agent."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","x-schema-family":"STRUCTURED_PRODUCT_RESULT","x-schema-authority":"STRUCTURED_PRODUCT_RESULT","additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.005001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_KIz9Cjhlgcz67xqB2GRT-","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005001","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates an agent RPC or x402 chain-data request before payment by checking endpoint origin safety, method risk level, blockchain network fit, price, and budget constraints.","exampleAgentPrompt":"Before my agent pays to call the eth_sendRawTransaction method on the Ethereum mainnet RPC at https://mainnet.infura.io/v3/mykey, run a preflight check to confirm the endpoint is trusted, the method risk is acceptable, the chain fits, and the price of $0.005 USDC is within my $1.00 budget.","exampleUseCases":[{"title":"Budget guard before paid RPC call","prompt":"Before my agent sends a paid eth_call request to the Base mainnet RPC endpoint https://mainnet.base.org, preflight it to make sure the method risk is low, the chain is Base, the price is $0.005 USDC, and that stays within my $0.50 daily budget."},{"title":"Block risky write method before execution","prompt":"My agent is about to call eth_sendRawTransaction on an unknown RPC origin — can you run a preflight check on it first to see if the endpoint is safe, what the method risk level is, and whether I should block the call?"},{"title":"Verify chain fit for cross-chain agent task","prompt":"I have an agent trying to read chain data from what it thinks is Polygon but the RPC origin looks unfamiliar — preflight the request to confirm the chain ID matches Polygon mainnet and that the endpoint origin is legitimate before any payment goes through."}],"resultDescription":"Returns a structured preflight advisory including: endpoint origin safety verdict, method risk classification, chain/network compatibility result, price evaluation, and budget sufficiency check — helping the agent decide to proceed, warn, or block the request before any payment is made.","failureModes":["Invalid or unreachable RPC origin URL returns an origin safety failure","Unknown or unsupported chain ID returns a chain fit mismatch error","Missing required parameters (origin, method, chain, price, budget) returns a 400 bad request","Price exceeds declared budget returns a budget-exceeded block result","Unrecognized RPC method returns an unknown method risk warning"],"whenToPreferThis":"Use this endpoint when an AI agent is about to make a paid x402 or RPC chain-data call and needs a pre-execution safety gate — especially when the endpoint origin is unfamiliar, the method could be destructive (write/send), the chain identity needs confirmation, or budget enforcement is required. Prefer this over the budget-route planner when you need a single-request go/no-go decision rather than multi-step routing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-02T18:33:16.736Z","isFirstParty":false,"canonicalSlug":"no-hands-ai-rpc-preflight-checker-088e94c8"}