{"uid":"cap_HXpvwX0oVlPEF4Smwd1O2","slug":"fastapi-online-solana-address-balance-lookup-6d887d41","name":"fastapi.online — Solana Address Balance Lookup","description":"Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.","url":"https://api.fastapi.online/sol-balance?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"address":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/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_L0H3uLhD9hvzED2RGQpml","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":"Looks up the current SOL balance for a given Solana wallet address","exampleAgentPrompt":"What's the current SOL balance for the Solana wallet address 9WzDXwBbmkg8ZTbNMqUxvQRAyrZzDsGYdLVL9zYtAWWM?","exampleUseCases":[{"title":"Portfolio balance snapshot","prompt":"Check the SOL balance for this wallet address: 5YNmS1R9nNSCDzb5a7mMJ1dwR9mjDtbWRgHdqkntcPR and tell me how much SOL it holds right now."},{"title":"DeFi wallet monitoring","prompt":"Can you look up how much SOL is in the wallet HN7cABqLq46Es1jh92dQQisAq662SmxELLLsHHe4YWrH? I want to know before deciding whether to trigger a transaction."},{"title":"Crypto payment verification","prompt":"Before I send a request to someone, verify their Solana wallet 3h1zGmCwsRJnVk5BuRNMLsPaXf1T7QnDe5bMkC59AKJQ has enough SOL — what's the current balance?"}],"resultDescription":"Returns the current SOL balance associated with the provided Solana wallet address, expressed as a numeric value in SOL units.","failureModes":["Invalid or malformed Solana address returns an error response","Address with zero balance may return 0 rather than an error","Network or RPC node unavailability may cause timeouts or errors","Missing address field in the request body causes a validation error"],"whenToPreferThis":"Use this endpoint when you need a quick, pay-per-call SOL balance lookup without API key signup, especially in automated or agent-driven workflows that require on-demand Solana wallet balance checks at minimal cost ($0.001 USDC per call). Prefer this over on-chain RPC calls when you want a simple HTTP interface without managing Solana RPC connections directly.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T18:50:07.520Z","isFirstParty":false,"canonicalSlug":"fastapi-online-solana-address-balance-lookup-6d887d41"}