{"uid":"cap_64vUsflGlyWQq7rdXDtjd","slug":"market-intelligence-api-buy-5-prepaid-credit-pack-67767568","name":"Market Intelligence API – Buy $5 Prepaid Credit Pack","description":"Use when your client cannot sign an x402 payment per call (most MCP clients): one payment buys prepaid credit ($5, $20 = $22 credit, $50 = $60) and returns an API key. Send it as X-API-Key on any paid route or MCP tool; each call costs its x402 price and failed calls are refunded. With your key in X-API-Key it tops that key up.","url":"https://api.marketintelligenceapi.com/api/v1/credits/buy/5?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input","output"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"pathParams":{"type":"object","required":["usd"],"properties":{"usd":{"enum":["5","20","50"],"type":"string","examples":["5"],"description":"Pack price in USD: 5, 20 or 50."}},"additionalProperties":false},"queryParams":{"type":"object","properties":{"name":{"type":"string","description":"Endpoint query parameter"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"description":"Example JSON response returned by this endpoint"}},"additionalProperties":true}},"additionalProperties":false},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"5","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":"$5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TILGgj_shAIPvntyzVPhA","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"5","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Purchases a $5 prepaid credit pack and returns an API key for use with paid Market Intelligence API endpoints","exampleAgentPrompt":"I want to start using the Market Intelligence API without signing a payment on every single call — buy me the $5 prepaid credit pack and give me the API key I can use going forward.","exampleUseCases":[{"title":"MCP client API key provisioning","prompt":"My MCP client can't sign x402 payments for each call — buy the $5 credit pack from Market Intelligence API and return the API key so I can attach it to all my market data requests."},{"title":"Low-commitment market data trial","prompt":"I want to try the Market Intelligence API's crypto and stock signals without committing a lot — get me the $5 prepaid starter pack and give me the API key."},{"title":"Top up existing Market Intelligence key","prompt":"I already have a Market Intelligence API key and I want to add more credits to it — go ahead and purchase the $5 credit top-up using my key in the X-API-Key header."}],"resultDescription":"Returns an API key that can be used as X-API-Key on any paid Market Intelligence API route or MCP tool. The key carries a prepaid credit balance equal to the purchased pack amount ($5 for this endpoint). Each subsequent paid call deducts its x402 price from the balance, and failed calls are refunded.","failureModes":["Payment of $5 USDC not completed or rejected — no API key returned","Insufficient USDC balance in paying wallet — transaction fails","Network or gateway error during payment processing — retry required","Invalid or malformed request — 400 error returned","Rate limiting or duplicate purchase detection — request blocked"],"whenToPreferThis":"Choose this endpoint when your client (e.g. an MCP client or AI agent) cannot sign x402 per-call payments natively and needs a simpler API-key-based access model. Also use it when you want a low-cost entry point ($5) to trial the Market Intelligence API before committing to larger packs. If you already have an API key, this endpoint can top it up with additional credits.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T12:32:53.120Z","isFirstParty":false,"canonicalSlug":"market-intelligence-api-buy-5-prepaid-credit-pack-67767568"}