Ordinal to words en

ordinal-to-words-en · version 1.0.0 · Numbers & math · free, no key needed

Spell an integer ordinal in English words and return the styled ordinal text.

Use when you need to: ordinal number to English words · spell 21st in words · convert integer to ordinal words.

Decide before calling

Read the versioned contract and the supported scope below. Reuse ordinal-to-words-en@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 ordinal-to-words-en@1.0.0 for ordinal number to English words. 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

• ordinal number to English words
• spell 21st in words
• convert integer to ordinal words
• write a negative ordinal in English
• English ordinal name generator
• number as first second or third

Not supported

• cardinal decimal wording
• parse ordinal words
• ordinal suffix only

Behavior

• Uses the documented ComputeFirst English short-scale grammar through undecillion; this is a deterministic house grammar, not an authoritative linguistic standard.
• Options default to hyphenate=true, use_and=false, and negative_word="minus"; callers can select every style choice explicitly.
• Input and output are locale-independent ASCII; no trimming, case folding, host locale, or binary floating-point conversion.

Input

• value (string, required): min length 1; max length 40
• hyphenate (boolean, optional): default true
• use_and (boolean, optional): default false
• negative_word (one of "minus", "negative", optional): default "minus"

Output

• text (string, required): min length 1; max length 2048
• standard_version (constant "compute-first-english-number-words-1.0.0", required)

Limits

• max input bytes: 40
• max integer digits: 39
• max output bytes: 581

Example

Request input:

{
  "value": "21"
}

Response:

{
  "result": {
    "text": "twenty-first",
    "standard_version": "compute-first-english-number-words-1.0.0"
  }
}

How to call it

MCP

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

{
  "id": "ordinal-to-words-en",
  "version": "1.0.0",
  "input": {
    "value": "21"
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/ordinal-to-words-en/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"value":"21"}'

The machine-readable contract is at /v1/tools/ordinal-to-words-en/versions/1.0.0.

CLI

node cli.mjs run ordinal-to-words-en 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.

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