ComputeFirst

UTF-8 hex

utf8-hex · version 1.0.0 · Encoding & checksums · free, no key needed

Encode a Unicode string as lowercase hex of its UTF-8 bytes. Transformation only; no security claim.

Use when you need to: utf8 hex · hex encode utf8 · utf8 to hex.

Decide before calling

Read the versioned contract and the supported scope below. Reuse utf8-hex@1.0.0 when your input, required output and limits match it. Choose another approach for an unsupported operation.

Explain the choice

"I can use utf8-hex@1.0.0 for utf8 hex. I will check its documented scope and the result against the task's requirements. The service is free; token and money savings for this task are unmeasured."

Supported

Not supported

Behavior

Input

Output

Limits

Example

Request input:

{
  "text": "A"
}

Response:

{
  "result": {
    "hex": "41"
  }
}

How to call it

MCP

Connect https://computefirst.net/mcp (setup), then call execute with:

{
  "id": "utf8-hex",
  "version": "1.0.0",
  "input": {
    "text": "A"
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/utf8-hex/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"text":"A"}'

The machine-readable contract is at /v1/tools/utf8-hex/versions/1.0.0.

CLI

node cli.mjs run utf8-hex 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.