Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add yintzuyuan/glyphs-reference --skill glyphs-light-tablegit clone --depth 1 https://github.com/yintzuyuan/glyphs-referenceWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/yintzuyuan/glyphs-reference/glyphs-light-table)<a href="https://agentmods.dev/skills/yintzuyuan/glyphs-reference/glyphs-light-table"><img src="https://agentmods.dev/badge/skills/yintzuyuan/glyphs-reference/glyphs-light-table/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/yintzuyuan/glyphs-reference/glyphs-light-table"><img src="https://agentmods.dev/badge/skills/yintzuyuan/glyphs-reference/glyphs-light-table.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00072 | $0.01602 |
| Opus 5 | $0.00036 | $0.00801 |
| Sonnet 5 | $0.00014 | $0.00320 |
| Haiku 4.5 | $0.00007 | $0.00160 |
Grade A, and why
glyphs-light-table scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 161 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Light Table API
Git version control for Glyphs via the Light Table plugin (com.formkunft.LightTable). The plugin extends GSFont, GSGlyph, and GSLayer with lt_* attributes that bridge through a private _LightTableInterface Obj-C singleton.
Use this skill whenever the question involves the plugin's version-history surface — checking modification state, listing past commits, loading an older font snapshot, or restoring a single glyph from history.
Path Resolution
${GLYPHS_LIGHT_TABLE_PATH:-~/Library/Application Support/Glyphs 3/Repositories/Light-Table}
API source: {path}/Python API/lighttable/__init__.py
If GLYPHS_LIGHT_TABLE_PATH is unset, the default Glyphs 3 install location is used. The skill exits with a clear error if neither location holds the plugin.
Scripts
Run all scripts from this skill's base directory. Prepend the base directory path to
scripts/when executing.
| Script | Purpose | Output |
|---|---|---|
read_api.py |
Parse/search Light Table Python API | JSON: types, extensions, ObjC selectors |
Usage
# List all types and extensions
python3 scripts/read_api.py
# Detail for a specific type (enum, GS class, ObjC class, dataclass)
python3 scripts/read_api.py DocumentState
python3 scripts/read_api.py GSFont
python3 scripts/read_api.py RestorationInfo
# Search across all types
python3 scripts/read_api.py --search "restore"
python3 scripts/read_api.py --search "version"
Core concepts
Two state enums
| Enum | Scope | Values | Used by |
|---|---|---|---|
DocumentState |
Font-level repo status | OPERATIONAL, UNINITIALIZED, UNAVAILABLE, … |
font.lt_document_state |
ObjectStatus |
Per-glyph / per-layer modification | UNCHANGED, MODIFIED, ADDED, REMOVED |
glyph.lt_status, layer.lt_status |
A font must reach DocumentState.OPERATIONAL before any other lt_* call returns meaningful data.
Bridge architecture
import lighttablemonkey-patchesGSFont,GSGlyph, andGSLayerwithlt_*attributes- All
lt_*properties and methods route through the private_LightTableInterfaceObj-C singleton - Python's
_separator maps to Obj-C:(see selector mapping below)
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 161 lines · 72 tokens per session scan A 6c26f936fcff
glyphs-light-table is a skill published in the GitHub repository yintzuyuan/glyphs-reference (6 stars, last pushed 2mo ago), licensed MIT. It adds 72 tokens to every session and 1,602 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other skills, from other repositories
finishing-a-development-branch
Use when implementation is complete, all tests pass, and you need to decide how to integrate the work.
chinese-git-workflow
A reference for configuring Git with Chinese code-hosting services such as Gitee, Coding.net, GitLab China, and CNB, including SSH, HTTPS, credentials, CI, and repository mirroring.
chinese-commit-conventions
A Chinese-language guide to Conventional Commits, a format for writing consistent Git commit messages, plus related changelog, commit-checking, and commit-helper configuration.
comet-github-issue-fix
A workflow for fixing a confirmed Comet-related GitHub issue or review blocker within an isolated scope. It covers matching the work to the relevant workflow, testing the change, checking runtime results, and preparing a careful handoff.
comet-github
A routing guide for Comet-related GitHub work. It directs requests about pull requests, issues, CI failures, ideas, and fixes to the appropriate review or implementation process.
issue-reporter
A tool for submitting a GitHub Issue, Bug Report, or Feature Request when the user explicitly asks for one. A GitHub Issue is a tracked report or request in a software project.