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fastapi.online — Case Convert
x402
fastapi.online — Case Convert is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.0005/call, status unknown (last checked 2026-09-14).
Converts a text string to a specified programming or writing case style (camelCase, snake_case, kebab-case, etc.)
Price / call$0.0005
Success—
StatusUnknown
How this service works
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.
Output
Returns the input text reformatted into the specified case style (e.g. camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, or lower case).
Example use cases
Variable naming for code review
“I'm writing a Python function and need 'getUserProfileData' reformatted as snake_case — can you convert it?”
CSS class name normalization
“Take the phrase 'Primary Button Large' and convert it to kebab-case so I can use it as a CSS class name.”
Constant naming in config files
“I need 'max retry attempts' converted to CONSTANT_CASE for use as an environment variable name.”
Technical details
Endpoint
POSThttps://api.fastapi.online/case-convertWhen to prefer
Use this endpoint when you need a lightweight, deterministic case conversion without setting up a local library or installing dependencies. Ideal for AI agents that need to normalize identifiers, variable names, or labels on-the-fly in a serverless or stateless context, paying per call with no signup required.
Side effects
- Text exceeds 2000 character limit — request rejected
- Invalid or missing target case enum value — validation error
- Empty string input — rejected due to minLength:1 constraint
- Payment not provided or insufficient — 402 response requiring crypto payment
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | |
| target | string |
Tags
x402
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