llms.txt git:20260511.1cf4a35A

Immutable. This exact content never changes and is served at /api/v1/blob/2e7f6e40bba419fe.

# claude-skill-llms-txt-writer

> A Claude Code skill (Python, MIT, v0.2.0) that writes documents optimized to be cited by AI search engines (ChatGPT, Perplexity, Gemini). Combines Answer.AI's `llms.txt` standard with GEO-SFE 3-layer static analysis backed by Victorino LLC, The Digital Bloom, Position Digital, Omniscient Digital, and arXiv:2603.29979.

## Core documentation

- [llms-full.txt](llms-full.txt): self-contained Q&A reference for AI agents (Project Facts, Prior Research, 9 question-form H2 sections)
- [README.md](README.md): human-facing narrative (install, how it works, GEO metrics, examples)
- [SKILL.md](skills/llms-txt-writer/SKILL.md): full skill specification — when to use, post-script interpretation, ski-ramp optimization techniques 1 / 2 / 3, anti-patterns
- [CHANGELOG.md](CHANGELOG.md): release notes (v0.2.0 initial release)

## Architecture

- [scripts/geo_check.py](skills/llms-txt-writer/scripts/geo_check.py): 528-line bilingual (EN / JA) static analyzer — 5 GEO metrics in one pass, text or `--json` output
- [pyproject.toml](skills/llms-txt-writer/pyproject.toml): Python 3.11+, dependencies `markdown-it-py`, `textstat`, `ginza`, `ja-ginza`
- [tests/test_geo_check.py](skills/llms-txt-writer/tests/test_geo_check.py): 48 passing unit + integration tests
- [fixtures/](skills/llms-txt-writer/fixtures/): `sample_en.md`, `sample_ja.md` — minimal worked examples

## Standard reference

- [llmstxt.org](https://llmstxt.org/): Answer.AI's `llms.txt` proposal (Jeremy Howard, 2024) — the two-file `llms.txt` + `llms-full.txt` layout this skill implements
- [arXiv:2603.29979](https://arxiv.org/abs/2603.29979): GEO-SFE framework paper — macro / meso / micro analysis layers

## Sibling skills

- [claude-skill-comply](https://github.com/shimo4228/claude-skill-comply): measures whether agents actually follow skill / rule definitions (v0.3.0)
- [claude-skill-context-sync](https://github.com/shimo4228/claude-skill-context-sync): audits and fixes project documentation roles (CLAUDE.md, ADR, README)
- [claude-skill-search-first](https://github.com/shimo4228/claude-skill-search-first): research-before-coding workflow — find existing libraries before building
- [claude-skill-stocktake](https://github.com/shimo4228/claude-skill-stocktake): quality audit for skills and commands
- [claude-skill-rules-distill](https://github.com/shimo4228/claude-skill-rules-distill): scan installed skills, extract cross-cutting principles, and distill them into rules
- [claude-skill-learn-eval](https://github.com/shimo4228/claude-skill-learn-eval): extract reusable patterns from sessions, self-evaluate quality, and save to the right location
- [claude-skill-daily-research](https://github.com/shimo4228/claude-skill-daily-research): cron-driven daily research digest — theme selection, multi-stage web research, LLM-as-Judge evaluation