Case converter: camelCase, snake_case, kebab-case and more

$0.01 per call · failed calls are never charged · no account or subscription: pay per call with a card key or USDC

Convert text or identifiers between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, Sentence case, UPPER and lower. Handles mixed input like 'userID_value'. Use when renaming fields or generating code identifiers.

Run it free (25 free calls) Buy credits by card (from $1) Example result (JSON)

Try it with your own inputs

The text
camel, pascal, snake, kebab, constant, title, sentence, upper or lower

Uses one of your 25 free calls. Nothing is charged, and a call that fails is not counted.

Inputs

NameTypeDescription
text (required)stringThe text
to (required)stringcamel, pascal, snake, kebab, constant, title, sentence, upper or lower

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://tools.funwords.eu/case?text=user%20profile%20id&to=camel"

Or one of your 25 free calls, no key:

curl "https://tools.funwords.eu/case?text=user%20profile%20id&to=camel&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Example result

{
  "result": "userProfileId"
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is case, and the first 25 successful calls are free:

https://tools.funwords.eu/mcp

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