character-count（字符数）

Character Count

Use this skill when text must fit within a strict character limit and guessing is not acceptable.

This skill is portable and self-contained. The counting logic lives in the bundled script at scripts/character_count.py.

Scope

This skill measures exact string length as seen by Python len(text).

• It is suitable for generic hard-limit workflows.
• It is not a platform-specific compliance engine.
• If a platform applies custom weighting rules for URLs, Unicode, or special tokens, treat this skill as a deterministic local gate, not as a guarantee of platform acceptance.

Rules

• Never estimate character counts manually.
• Always count the final text exactly as it will be posted or saved.
• If the text is too long, rewrite it and count again.
• Prefer the JSON output mode for deterministic downstream use.
• Do not describe the result as platform-accurate unless the target platform uses plain string length.

Recommended Usage

The bundled script requires python3. For broad portability, assume Python 3.8 or newer.

From the skill root, pass the exact final text over stdin so shell quoting does not alter the content:

printf '%s' "$FINAL_TEXT" | python3 scripts/character_count.py --limit 280 --json

If you are calling it from another working directory, use the full path to the script inside the installed skill folder.

If stdin is inconvenient, pass the text as an argument:

python3 scripts/character_count.py --limit 280 --json --text "Hello world"

Output Contract

--json returns a single JSON object:

{"chars":11,"limit":280,"remaining":269,"ok":true}

Field meanings:

• chars: exact Python string length of the provided text
• limit: the configured limit
• remaining: limit - chars
• ok: true when chars <= limit

Without --json, the script prints plain text key-value lines:

chars=11
limit=280
remaining=269
ok=true

Twitter and X Workflow

For tweets and replies:

1. Draft the final post text.
2. Count it with --limit 280.
3. If ok is false, shorten the text.
4. Count again.
5. Post only after the script reports ok=true.
6. If you need exact X enforcement, add a platform-specific validation step in addition to this skill.

Notes

• Count the exact final text, including spaces, punctuation, hashtags, and URLs.
• Do not add or remove characters after counting unless you count again.
• Use printf '%s' instead of echo to avoid introducing a trailing newline.
• If the script receives no text, treat that as a calling error and fix the invocation before proceeding.