{"slug":"agent402-tools-api-exa-answer-fbb1b1","title":"Ask a question and get a written answer with the sources it was drawn from","host":"agent402.tools","method":"POST","resource":"https://agent402.tools/api/exa-answer","category":"other","description":"Ask a question and get a written answer with the sources it was drawn from. Exa searches its index, reads the pages and composes the answer, returning the citation list (title, URL, published date) alongside it so every claim can be checked. Model-backed: the answer text is generated, the citations ","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":923,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=","eip155:10","eip155:1329","eip155:137","eip155:143","eip155:42161","eip155:42220","eip155:43114","eip155:4663","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","stellar:pubnet"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"query":"What is the x402 payment protocol and who uses it?"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"query":{"description":"The question to answer (max 1000 chars).","type":"string"},"text":{"description":"Include the full page text of each citation (bills extra per page; default false).","type":"boolean"}},"required":["query"]},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"properties":{"answer":{"type":"string"},"citationCount":{"type":"integer"},"citations":{"items":{"properties":{"author":{},"publishedDate":{"type":"string"},"text":{},"title":{"type":"string"},"url":{"type":"string"}},"type":"object"},"type":"array"},"fetchedAt":{"type":"string"},"query":{"type":"string"},"source":{"type":"string"}},"required":["source","fetchedAt","query","answer","citationCount","citations"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":923,"error":null}],"description_full":"Ask a question and get a written answer with the sources it was drawn from. Exa searches its index, reads the pages and composes the answer, returning the citation list (title, URL, published date) alongside it so every claim can be checked. Model-backed: the answer text is generated, the citations are retrieved.","last_updated":"2026-09-13T22:39:58.547Z","schemes":["exact","upto"]}