mjmorales/prompting-token-count
skills/prompting-token-count/SKILL.md
Estimate token counts for prompt files. Wraps the token-count script for measuring agents, skills, commands, references, or any text file. Use when the user wants to check prompt size, compare token budgets, or measure files before/after optimization.
$ install --global
skillsauthnpx skillsauth add mjmorales/claude-prove prompting-token-countInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: Apr 24, 2026, 8:51 PM1.8s1 file scanned
SKILL.md
- name:
- prompting-token-count
- description:
- Estimate token counts for prompt files. Wraps the token-count script for measuring agents, skills, commands, references, or any text file. Use when the user wants to check prompt size, compare token budgets, or measure files before/after optimization.
Token Count
Estimate token counts for files using a regex-based heuristic tokenizer. Works on any text file — not limited to prove prompts.
Script Location
$PLUGIN_DIR/scripts/token-count.py
Where $PLUGIN_DIR is this plugin's root directory.
Usage
Run the script from the user's project root. Pass glob patterns or file paths as positional arguments.
python3 "$PLUGIN_DIR/scripts/token-count.py" <patterns...> [flags]
Arguments
Positional arguments are glob patterns or literal file paths. Multiple patterns can be combined.
| Flag | Effect |
|------|--------|
| --sort tokens | Sort by token count descending (default) |
| --sort name | Sort alphabetically by path |
| --sort lines | Sort by line count descending |
| --json | Machine-readable JSON output |
| --no-strip | Include YAML frontmatter in count (stripped by default) |
Examples
# All markdown files
python3 "$PLUGIN_DIR/scripts/token-count.py" "**/*.md"
# Single file
python3 "$PLUGIN_DIR/scripts/token-count.py" agents/llm-prompt-engineer.md
# Multiple patterns
python3 "$PLUGIN_DIR/scripts/token-count.py" "agents/**/*.md" "skills/**/SKILL.md"
# JSON output for scripting
python3 "$PLUGIN_DIR/scripts/token-count.py" "**/*.md" --json
Interpreting Results
- Tokens: Heuristic estimate, typically within 10-15% of Claude's actual BPE tokenizer. Slightly overcounts.
- Lines/Chars: After frontmatter stripping (unless
--no-strip). - Frontmatter stripping: YAML frontmatter between
---markers is excluded by default since Claude Code doesn't send it as prompt content.
When to Use
- Before and after prompt optimization — measure the delta
- Auditing prompt budgets across a project
- Comparing agent definitions to find outliers
- Checking if a reference file is too large for context
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