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 thierryc/Glyphs-mcp --skill glyphs-mcp-developmentgit clone --depth 1 https://github.com/thierryc/Glyphs-mcpWrote 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/thierryc/glyphs-mcp/glyphs-mcp-development)<a href="https://agentmods.dev/skills/thierryc/glyphs-mcp/glyphs-mcp-development"><img src="https://agentmods.dev/badge/skills/thierryc/glyphs-mcp/glyphs-mcp-development/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/thierryc/glyphs-mcp/glyphs-mcp-development"><img src="https://agentmods.dev/badge/skills/thierryc/glyphs-mcp/glyphs-mcp-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Rogue Agent · line 29 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 | $0.00059 | $0.01120 |
| Opus 5 | $0.00030 | $0.00560 |
| Sonnet 5 | $0.00012 | $0.00224 |
| Haiku 4.5 | $0.00006 | $0.00112 |
Grade A, and why
glyphs-mcp-development 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 11d 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 — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Glyphs MCP development
Create workspace-first Glyphs scripts and plug-ins from pinned SDK templates.
Core rules
- Search with
docs_search, then fetch only the relevant pages withdocs_getbefore using unfamiliar Glyphs APIs or plug-in lifecycle methods. - Use
glyphs-mcp-scriptinginstead when the request is to preview, run, or debug a one-off script inside the live Glyphs app. Bring verified behavior back here when it should become a reusable script or plug-in. - Target Glyphs 3.5 and Glyphs 4 unless the user explicitly requests one version.
- Create files in the current workspace. Never write to a live Glyphs Scripts or Plugins folder without a separate explicit request.
- Never install, execute, reload, restart Glyphs, or overwrite an existing artifact automatically.
- Keep
Contents/MacOS/pluginfrom the bundled SDK template unchanged and retain the bundled Apache 2.0 attribution. - Validate after scaffolding and after source edits.
- When extending this repository's outline-candidate system, keep mathematics
and process-local state free of GlyphsApp/AppKit imports; keep MCP wrappers
responsible for snapshots and guarded mutation; keep Reporter callbacks
drawing-only. Add every public tool to
TOOL_CATALOG, then register it only withglyphs_tool; directmcp.tooldecorators are forbidden. Give it all four safety hints, one visibility/effect class, concise routing metadata, and an output schema when it belongs to a structured workflow. Import its module throughmcp_tools.py, and export every Reporter principal class through bothplugin.pyandInfo.plist. - Keep the MCP surface lean. Prefer a dedicated typed tool over an opaque action multiplexer, but do not add a wrapper when an existing candidate adapter or lifecycle transition already expresses the same operation.
- For candidate, curve, spacing, or kerning tools, preserve legacy JSON text and
add the validated structured-result envelope. Keep workflow details in typed
data; do not expand the common envelope with domain-specific fields.
What ships with it
28 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.
- agents/openai.yaml 286 B
- assets/GlyphsSDK-LICENSE.txt 9.9 KB
- assets/SOURCE.json 1.2 KB
- assets/templates/file-format/____PluginName____.glyphsFileFormat/Contents/Info.plist 1.1 KB
- assets/templates/file-format/____PluginName____.glyphsFileFormat/Contents/MacOS/plugin 117 KB
- assets/templates/file-format/____PluginName____.glyphsFileFormat/Contents/Resources/ExportIcon.tif 30 KB
- assets/templates/file-format/____PluginName____.glyphsFileFormat/Contents/Resources/[email protected] 106 KB
- assets/templates/file-format/____PluginName____.glyphsFileFormat/Contents/Resources/plugin.py 4.5 KB runs code
- assets/templates/filter/____PluginName____.glyphsFilter/Contents/Info.plist 948 B
- assets/templates/filter/____PluginName____.glyphsFilter/Contents/MacOS/plugin 117 KB
- assets/templates/filter/____PluginName____.glyphsFilter/Contents/Resources/plugin.py 1.1 KB runs code
- assets/templates/general/____PluginName____.glyphsPlugin/Contents/Info.plist 948 B
- assets/templates/general/____PluginName____.glyphsPlugin/Contents/MacOS/plugin 117 KB
- assets/templates/general/____PluginName____.glyphsPlugin/Contents/Resources/plugin.py 1.3 KB runs code
- assets/templates/palette/____PluginName____.glyphsPalette/Contents/Info.plist 948 B
- assets/templates/palette/____PluginName____.glyphsPalette/Contents/MacOS/plugin 117 KB
- assets/templates/palette/____PluginName____.glyphsPalette/Contents/Resources/IBdialog.nib 2.7 KB
- assets/templates/palette/____PluginName____.glyphsPalette/Contents/Resources/IBdialog.xib 2.2 KB
- assets/templates/palette/____PluginName____.glyphsPalette/Contents/Resources/plugin.py 2.1 KB runs code
- assets/templates/reporter/____PluginName____.glyphsReporter/Contents/Info.plist 948 B
- assets/templates/reporter/____PluginName____.glyphsReporter/Contents/MacOS/plugin 117 KB
- assets/templates/reporter/____PluginName____.glyphsReporter/Contents/Resources/plugin.py 2.7 KB runs code
- assets/templates/select-tool/____PluginName____.glyphsTool/Contents/Info.plist 948 B
- assets/templates/select-tool/____PluginName____.glyphsTool/Contents/MacOS/plugin 117 KB
- assets/templates/select-tool/____PluginName____.glyphsTool/Contents/Resources/Icon.glyphs 1.6 KB
- assets/templates/select-tool/____PluginName____.glyphsTool/Contents/Resources/plugin.py 4.9 KB runs code
- assets/templates/select-tool/____PluginName____.glyphsTool/Contents/Resources/toolbarIconTemplate.pdf 5.1 KB
- scripts/scaffold.py 17 KB runs code
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.
- 11d ago First seen · 83 lines · 59 tokens per session scan A 10649910d71c
glyphs-mcp-development is a skill published in the GitHub repository thierryc/Glyphs-mcp (44 stars, last pushed today), licensed Apache-2.0. It adds 59 tokens to every session and 1,120 once invoked, about $0.0003 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 2026-08-30.
Other skills, from other repositories
pygame-core
Structure a pygame (pygame-ce) game in Python: the init/event/update/draw loop, delta-time movement, Surface/Rect blitting, keyboard/mouse input, and Sprite/Group management with collision. Use when building or debugging a pygame game — when the user mentions pygame, pygame-ce, the game loop, blit, Surface, Rect…
vibeue
Unreal Engine 5 development using the VibeUE Python API. Use when working in Unreal Engine — blueprints, state trees, materials, actors, landscapes, animation, niagara, widgets, sound, foliage, gameplay tags, enhanced input, skeletons, PCG (procedural content generation), and more. VibeUE is an extension of Unreal's…
demo-1-terminal-arcade
Demo skill that builds a colorful, playable terminal Snake game in a single pure-stdlib Python curses file — score HUD, speed ramp, eat/death animations, and a game-over screen.
blender-bpy
Author, inspect, render, and export one hash-bound Blender asset in a disposable worker process.
unreal-pcg-python
Guide for Unreal Engine 5.x PCG (Procedural Content Generation) Python integration. Covers the PCGPythonInterop plugin, the Execute Python Script node, PCG Python API (PCGComponent, PCGBlueprintElement, PCGSpatialData, PCGPointData), editor automation, custom PCG nodes via Python, and known limitations. Use when the…
use-sparse-set
For sparse data: infinite grids, large spaces with few active elements, membership testing, set operations on coordinates or states.