{"uid":"cap_xHm8jc-QyL8Lw8fxpeYD_","slug":"fastapi-online-csv-to-json-converter-117aa71e","name":"fastapi.online CSV to JSON Converter","description":"Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.","url":"https://api.fastapi.online/csv-to-json","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"csv":{"type":"string","maxLength":200000,"minLength":1},"delimiter":{"type":"string","maxLength":1},"has_header":{"type":"boolean"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0005","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":"$0.0005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_yH95RtTTbC4qnw_Z3GweK","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts CSV text into JSON format, with configurable delimiter and optional header row handling","exampleAgentPrompt":"Convert this CSV text into JSON for me — it uses commas as delimiters and the first row is a header: 'name,age,city\\nAlice,30,NYC\\nBob,25,LA'","exampleUseCases":[{"title":"API payload preparation from spreadsheet export","prompt":"I exported a report from Excel as CSV and I need it as a JSON array so I can POST it to our internal API — the CSV uses commas and has a header row. Here it is: 'id,product,revenue\\n1,Widget A,500\\n2,Widget B,320'"},{"title":"Tab-delimited data pipeline ingestion","prompt":"Can you turn this tab-delimited data into JSON? There's no header row, just raw values: 'foo\\t42\\ttrue\\nbar\\t17\\tfalse'"},{"title":"Semicolon-separated European CSV normalization","prompt":"I have a CSV from a European system that uses semicolons as delimiters and includes a header row — convert it to JSON please: 'vorname;nachname;alter\\nHans;Müller;45\\nAnna;Schmidt;32'"}],"resultDescription":"A JSON representation of the CSV data — typically a JSON array of objects (when headers are present) where each row becomes an object with header names as keys, or a JSON array of arrays (when no header row) representing raw row values.","failureModes":["Malformed CSV (unclosed quotes, inconsistent column counts) may return a parse error","Delimiter character mismatch causes columns to not be split correctly","Exceeding the 200,000 character input limit returns a validation error","Empty CSV string (minLength:1 violated) returns a 422 validation error","Payment not sent or insufficient USDC results in 402 Payment Required response"],"whenToPreferThis":"Choose this endpoint when you need a simple, low-cost ($0.0005 USDC), no-signup CSV-to-JSON conversion via a pay-per-call API. Ideal for agents that need to transform small-to-medium CSV payloads on demand without standing up infrastructure or managing API keys. Best for well-formed CSV strings with known delimiters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:06:02.925Z","isFirstParty":false}