{"uid":"cap_vFNUuo1aDX2pJyLLfI-Y9","slug":"quietsignal-token-facts-0850533b","name":"QuietSignal Token Facts","description":"QuietSignal Public Data: independent, read-only rollup, wallet, opportunity, and developer-data facts for agents, paid per request with USDC over HTTP 402 on Base.","url":"https://83-29-153-50.sslip.io/v1/token-facts?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":["address"],"properties":{"address":{"type":"string","description":"Public Base contract address to inspect"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"erc20":{"name":null,"symbol":null,"decimals":null,"total_supply":null},"schema":"base-token-facts/v1","address":"0x0000000000000000000000000000000000000000","network":"eip155:8453","disclaimer":"Read-only public contract and ERC-20 metadata facts; not a security or investment assessment.","is_contract":false}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_R_of6xpvYgGSrFz6hLl-m","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches read-only ERC-20 token metadata and contract facts for a given Base network contract address.","exampleAgentPrompt":"Can you look up the ERC-20 token facts for the Base contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 — I want the name, symbol, decimals, and total supply?","exampleUseCases":[{"title":"Verify unknown token contract","prompt":"I just received some tokens at 0x4200000000000000000000000000000000000006 on Base — can you pull the token name, symbol, and decimals so I can figure out what it is?"},{"title":"DeFi due diligence check","prompt":"Before I interact with this Base contract at 0x2Ae3F1Ec7F1F5012CFEab0185bfc7aa3cf0DEc22, can you fetch the on-chain ERC-20 facts like name, symbol, total supply, and confirm it's actually a deployed contract?"},{"title":"Populate token metadata in app","prompt":"I need the ERC-20 metadata for the Base address 0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA — give me the name, symbol, and decimal places so I can display it correctly in my app."}],"resultDescription":"Returns a JSON object containing the Base network address queried, network identifier (eip155:8453), whether the address is a contract, and ERC-20 fields including name, symbol, decimals, and total supply (any of which may be null if not applicable or unavailable), plus a schema version and a read-only disclaimer.","failureModes":["Address not provided — returns validation error requiring the 'address' query parameter","Address is not a deployed contract — returns is_contract: false with null ERC-20 fields","Address is valid but not an ERC-20 token — ERC-20 fields (name, symbol, decimals, total_supply) return null","Payment not provided — HTTP 402 response requiring USDC payment over x402 protocol on Base","Invalid Base address format — likely returns a 400 or validation error","Network connectivity or RPC issues — may return 5xx error"],"whenToPreferThis":"Use this endpoint when you need lightweight, read-only ERC-20 token metadata for a specific Base mainnet contract address and want to pay per-request with USDC rather than manage API keys. Prefer this over block explorer scraping when you need machine-readable structured JSON, and over full node RPC calls when you want a simple HTTP GET with no Web3 library dependency. Best suited for agents that need to verify or display token facts quickly without indexing or historical data requirements.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T17:27:24.154Z","isFirstParty":false,"canonicalSlug":"quietsignal-token-facts-0850533b"}