{"uid":"cap_78iR3A8lD6yYrlLQT1m4W","slug":"fiatdock-marketplace-signal-sprint-base-usdc-balance-eb4f7f94","name":"FiatDock Marketplace: Signal Sprint Base USDC Balance","description":"Pay-per-call: Signal Sprint Base USDC Balance","url":"https://fiatdock.com/s/svc_4fed2ffb-54d5-45cb-8df7-91c680a8fee9","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"method":{"type":"string","description":"e.g. tools/call"},"params":{"type":"object","description":"the seller's own tool name + arguments"},"jsonrpc":{"type":"string","description":"\"2.0\" — the body is forwarded VERBATIM to the seller's MCP endpoint, so send whatever that server expects"}}},"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_BFma0i3mAzwF76FP6mro1","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":"Fetches the USDC balance of any address on the Base network via a pay-per-call MCP-forwarded endpoint using x402 micropayment protocol","exampleAgentPrompt":"Can you check the USDC balance of the address 0xAbC...1234 on Base using Signal Sprint?","exampleUseCases":[{"title":"Pre-payment USDC liquidity check","prompt":"Before I send a transaction, check how much USDC wallet address 0x742d35Cc6634C0532925a3b8D4C9D5e3b1f2A3B4 currently holds on Base so I know if there are sufficient funds."},{"title":"Agent wallet balance monitoring","prompt":"Look up the current USDC balance on Base for my agent's settlement wallet at 0xDeadBeef0000000000000000000000000000CAFE so I can see if it needs to be topped up."},{"title":"DeFi counterparty due diligence","prompt":"I need to verify how much USDC address 0x1234567890abcdef1234567890abcdef12345678 holds on Base before I initiate a deal with them — can you pull the on-chain balance?"}],"resultDescription":"Returns the USDC token balance for the queried Base network address, delivered as a JSON-RPC 2.0 response forwarded from the seller's MCP endpoint, including the balance value in USDC units.","failureModes":["Invalid or malformed Ethereum address returns an error response","Address with zero USDC balance returns a valid response with zero amount","Network congestion or RPC node issues may cause timeouts","Malformed JSON-RPC body (wrong jsonrpc version or missing method/params) causes request rejection","Payment failure via x402 protocol prevents the call from being processed"],"whenToPreferThis":"Choose this endpoint when you specifically need the USDC balance (not ETH or other ERC-20 tokens) of an address on the Base network, and you want atomic pay-per-call pricing via x402 micropayments. Prefer this over full address intelligence endpoints when you only need USDC balance and want to minimize cost per call. Use when integrating with MCP-compatible agent toolchains that support x402 payment headers.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:33:42.316Z","isFirstParty":false}