{"uid":"cap_4oQMyDihS39qeM-ET7TTm","slug":"lion-keyless-base-rpc-x402-b54d22d2","name":"LION Keyless Base RPC (x402)","description":"Keyless multi-chain JSON-RPC reads, Base + Ethereum, from $0.001 (?chain=ethereum)","url":"https://lion-x402.lionmaster-operations.workers.dev/api/x402/keyless-base-rpc-json","method":"GET","headers":{},"bodySchema":{"type":"object","$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":["method"],"properties":{"chain":{"type":"string","description":"base|ethereum"},"method":{"type":"string","description":"JSON-RPC method e.g. eth_blockNumber"},"params":{"type":"string","description":"JSON array string of params"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"result":{"id":1,"result":"0x...","jsonrpc":"2.0"},"network":"eip155:8453","asset_id":"KEYLESS_BASE_RPC_001"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_kZSAwzWXmo7R2NuunSx_K","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Executes read-only JSON-RPC calls against the Base (EVM) blockchain, gated by per-call USDC micropayment via x402 — no API key or signup required.","exampleAgentPrompt":"Can you check the ETH balance of wallet address 0xAbC...123 on Base mainnet right now using a keyless RPC call — no API key needed, just pay per call?","exampleUseCases":[{"title":"Fetch latest Base block number","prompt":"What's the current block number on Base mainnet? Just hit the RPC directly — no API key, pay per call in USDC."},{"title":"Read smart contract state on Base","prompt":"Can you call the balanceOf function on this ERC-20 contract at 0xDef...456 for my wallet 0xAbc...789 on Base — use a keyless RPC call, no signup needed?"},{"title":"Retrieve event logs from Base contract","prompt":"Pull the last 100 Transfer event logs from the contract at 0x123...abc on Base mainnet — just use a pay-per-call RPC, I don't want to set up an API key."}],"resultDescription":"A standard JSON-RPC 2.0 response object containing the 'result' field (e.g. hex balance, block number, call return value, or log array), plus metadata fields 'network' (eip155:8453) and 'asset_id' (KEYLESS_BASE_RPC_001).","failureModes":["Payment not provided or rejected — endpoint returns HTTP 402 with payment requirements","Invalid or unsupported RPC method (write methods like eth_sendRawTransaction) — returns JSON-RPC error","Malformed JSON-RPC body (missing 'method' or 'jsonrpc') — returns validation error","Batch exceeds 10 requests — likely rejected or partially processed","Upstream Base node error — propagated as standard JSON-RPC error object","Network timeout on Base node — results in 5xx or JSON-RPC internal error"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to query Base blockchain state (balances, contract calls, logs, block data) without provisioning an API key or creating an account — ideal for autonomous agents that can pay $0.001 USDC per call via x402 micropayment. Prefer over traditional RPC providers when zero-signup, pay-as-you-go access is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:51:15.533Z","isFirstParty":false}