{"uid":"cap_J2OLbWTd4tZAST3e-pooF","slug":"token-supply-market-data-lookup-by-contract-address-661325a8","name":"Token Supply & Market Data Lookup by Contract Address","description":"Machine-payable data APIs for AI agents — 35 endpoints across web search, on-chain reads, trading data, and AI-visibility. Pay per call in USDC via x402 on Base. No API keys, no signup.","url":"https://x402-agent-store.rileycraig14.workers.dev/chain/supply?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":{"chain":{"type":"string","description":"base|ethereum|optimism|arbitrum|polygon|gnosis (default ethereum)"},"address":{"type":"string","description":"Token contract address (0x...)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"holders":{"type":"number"},"usd_price":{"type":"number"},"total_supply":{"type":"number"}}}}}}},"responseSchema":{"type":"json","example":{"name":"USD Coin","chain":"ethereum","symbol":"USDC","address":"0x...","holders":1842000,"decimals":6,"usd_price":1,"market_cap":24500000000,"total_supply":24500000000}},"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":"unknown","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_YCN3BA50X8fqDt73VHl0i","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":"Returns on-chain token metadata including total supply, holder count, USD price, market cap, and decimals for a given ERC-20 contract address across multiple EVM chains.","exampleAgentPrompt":"What is the total supply, holder count, and USD price for the USDC token at contract address 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum?","exampleUseCases":null,"resultDescription":"A JSON object containing the token's name, symbol, contract address, chain, total supply (raw integer), number of holders, USD price, market cap in USD, and decimal precision — all sourced from on-chain reads.","failureModes":["Invalid or non-existent contract address returns an error or empty response","Unsupported chain name causes a validation error","Token with no holder data may return holders as null or 0","Non-ERC-20 contract address may return malformed or missing fields","Rate limits or payment failure (402) if USDC payment is not properly attached"],"whenToPreferThis":"Use this endpoint when you need on-chain token supply, holder count, or price data for a specific ERC-20 contract address across major EVM chains (Ethereum, Base, Arbitrum, Optimism, Polygon, Gnosis). Prefer this over general market APIs when you have the contract address and want canonical on-chain figures rather than exchange-reported data. It requires no API key — only a micro-payment of $0.001 USDC via x402 on Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-27T19:06:10.117Z","isFirstParty":false,"canonicalSlug":"token-supply-market-data-lookup-by-contract-address-661325a8"}