Text run length decode

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

Decode canonical count:HEX; run-length text and return the expanded Unicode string.

Use when you need to: run length decode text · expand RLE data · decode character runs.

Decide before calling

Read the versioned contract and the supported scope below. Reuse text-run-length-decode@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-decode@1.0.0 for run length decode 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 decode text
• expand RLE data
• decode character runs
• restore run length encoded string
• turn count and code point pairs into text
• decompress simple RLE text

Not supported

• auto-detecting other RLE formats
• binary decompression

Behavior

• Accepts only repeated count:HEX; records with positive base-10 counts and shortest uppercase hexadecimal scalar values.
• Adjacent records must encode different code points because equal adjacent code points form one canonical run.
• Counts, runs, input bytes, and expanded output are bounded before returning.
• The empty encoded string decodes as the empty string.

Input

• encoded (string, required): max length 4096

Output

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

Limits

• max input bytes: 4096
• max runs: 4096
• max run count: 4096
• max output bytes: 16384

Example

Request input:

{
  "encoded": "2:41;3:1F600;"
}

Response:

{
  "result": {
    "text": "AA😀😀😀",
    "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-decode",
  "version": "1.0.0",
  "input": {
    "encoded": "2:41;3:1F600;"
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/text-run-length-decode/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"encoded":"2:41;3:1F600;"}'

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

CLI

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

Get the client at /clients/cli/.

Related tools

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• Text count: Count Unicode code points, UTF-16 code units, UTF-8 bytes, and lines.
• Text levenshtein distance: Compute bounded Levenshtein distance over code points or deterministic grapheme tokens.