Html entities encode

html-entities-encode · version 1.0.0 · Structured formats · free, no key needed

Escape text for safe insertion into HTML text or quoted attribute values and return the encoded text.

Use when you need to: encode HTML entities · escape text for HTML · make text safe for HTML attribute.

Decide before calling

Read the versioned contract and the supported scope below. Reuse html-entities-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 html-entities-encode@1.0.0 for encode HTML entities. 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

encode HTML entities
escape text for HTML
make text safe for HTML attribute
encode ampersands and angle brackets
escape quoted HTML attribute value
convert text to HTML references

Not supported

sanitize an HTML document
URL or JavaScript escaping
choose quote delimiters

Behavior

Uses WHATWG HTML Living Standard snapshot 2026-11-05, sections 13.5 and 13.2.5.72–80.
Pins the named-reference table as whatwg-html-entities-2026-11-05-0155d7c70a78.
This is not a full HTML parser or a sanitizer for untrusted markup.

Input

text (string, required): max length 8192
context (one of "text", "attribute", required)

Output

text (string, required): max length 32768
standard_version (string, required)
data_version (string, required)

Limits

max input bytes: 8192
max output bytes: 32768
max iterations: 16384

Example

Request input:

{
  "text": "<A & B>",
  "context": "text"
}

Response:

{
  "result": {
    "text": "&lt;A &amp; B&gt;",
    "standard_version": "WHATWG HTML Living Standard snapshot 2026-11-05, sections 13.5 and 13.2.5.72–80",
    "data_version": "whatwg-html-entities-2026-11-05-0155d7c70a78"
  }
}

How to call it

MCP

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

{
  "id": "html-entities-encode",
  "version": "1.0.0",
  "input": {
    "text": "<A & B>",
    "context": "text"
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/html-entities-encode/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"text":"<A & B>","context":"text"}'

The machine-readable contract is at /v1/tools/html-entities-encode/versions/1.0.0.

CLI

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

Get the client at /clients/cli/.

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