Encoding toolbox: Base64, hex, URL, HTML and Unicode

$0.02 per call · failed calls are never charged · no account or API key needed

Every common encoding of one text in a single call: Base64 and Base64url, hex, URL component and full-URL encoding, HTML-escaped, ROT13, Unicode code points, UTF-8 byte count and Punycode for international domain names, plus automatic decoding when the input already looks like Base64, hex, URL or HTML encoding. Use to prepare data for headers, URLs and markup, or to work out what an encoded string says.

Run it free (25 free calls) Buy credits by card (from $5) Example result (JSON)

Try it with your own inputs

The text (up to 20,000 characters)

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

Inputs

NameTypeDescription
text (required)stringThe text (up to 20,000 characters)

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://agent-data-tools.revmesh2074.workers.dev/pack/encoding-toolbox?text=Caf%C3%A9%20%26%20%3Ctags%3E"

Or one of your 25 free calls, no key:

curl "https://agent-data-tools.revmesh2074.workers.dev/pack/encoding-toolbox?text=Caf%C3%A9%20%26%20%3Ctags%3E&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

{
  "characters": 13,
  "utf8Bytes": 14,
  "base64": "Q2Fmw6kgJiA8dGFncz4=",
  "base64url": "Q2Fmw6kgJiA8dGFncz4",
  "hex": "436166c3a92026203c746167733e",
  "urlComponent": "Caf%C3%A9%20%26%20%3Ctags%3E",
  "url": "Caf%C3%A9%20&%20%3Ctags%3E",
  "html": "Café & <tags>",
  "rot13": "Pnsé & <gntf>",
  "codePoints": [
    "U+0043",
    "U+0061"
  ],
  "punycode": null,
  "decoded": {}
}

From an AI agent (MCP)

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

https://agent-data-tools.revmesh2074.workers.dev/mcp

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