Text run length encode

text-run-length-encode · version 1.0.0 · Text · free, no key needed

Run-length encode Unicode text into canonical count:HEX; records and return the encoded string.

Use when you need to: run length encode text · compress repeated characters · encode character runs.

Decide before calling

Read the versioned contract and the supported scope below. Reuse text-run-length-encode@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 text-run-length-encode@1.0.0 for run length encode text. 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

• run length encode text
• compress repeated characters
• encode character runs
• make RLE text
• count consecutive Unicode characters
• convert a string to run length format

Not supported

• general-purpose compression
• byte-oriented run-length encoding

Behavior

• Format is repeated count:HEX; records, where count is base-10 without leading zero and HEX is an uppercase Unicode scalar value.
• Runs count Unicode code points; adjacent equal code points form one run.
• The empty string encodes as the empty string.

Input

• text (string, required): max length 4096

Output

• encoded (string, required)
• standard_version (constant "Unicode 16.0.0", required)

Limits

• max input bytes: 4096
• max code points: 4096
• max output bytes: 16384

Example

Request input:

{
  "text": "AA😀😀😀"
}

Response:

{
  "result": {
    "encoded": "2:41;3:1F600;",
    "standard_version": "Unicode 16.0.0"
  }
}

How to call it

MCP

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

{
  "id": "text-run-length-encode",
  "version": "1.0.0",
  "input": {
    "text": "AA😀😀😀"
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/text-run-length-encode/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"text":"AA😀😀😀"}'

The machine-readable contract is at /v1/tools/text-run-length-encode/versions/1.0.0.

CLI

node cli.mjs run text-run-length-encode 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.

Related tools

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• Text damerau distance: Compute bounded optimal-string-alignment distance with adjacent transpositions.