{"slug":"api-marketintelligenceapi-com-api-v1-credits-buy-5-9ce5dc","title":"Use when your client cannot sign an x402 payment per call (most MCP clients)","host":"api.marketintelligenceapi.com","method":"POST","resource":"https://api.marketintelligenceapi.com/api/v1/credits/buy/5","category":"market","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 = $60) and returns an API key. Send it as X-API-Key on any paid route or MCP tool; each call costs its x402 price and failed calls are refunded. With your key in X","price_listed":5.0,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:137","eip155:42161","eip155:480","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"POST","pathParams":{"symbol":"5"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","additionalProperties":false,"properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["POST"],"type":"string"},"pathParams":{"additionalProperties":false,"properties":{"symbol":{"description":"Pack price in USD","examples":["5"],"type":"string"}},"required":["symbol"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"additionalProperties":true,"properties":{"example":{"description":"Example JSON response returned by this endpoint"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input","output"],"type":"object"},"history":[],"description_full":"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.","last_updated":"2026-10-01T11:26:20.235Z","schemes":["exact"]}