What is glyphs-mcp-icon-font?

A tool for managing the character codes assigned to icons in Glyphs, a font-design application. It keeps icon-font assignments stable, including private-use characters that are reserved for custom symbols.

Auditing icon-font character assignments, assigning codes to new icons, comparing an older mapping, and safely applying approved changes.

It helps prevent existing icons from changing codes or new icons receiving conflicting codes. It also supports reviewing proposed changes before they are applied.

glyphs-mcp-icon-font — Skill for Claude Code and Codex by thierryc

Install

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.

Any agent

npx skills add thierryc/Glyphs-mcp --skill glyphs-mcp-icon-font

Clone the repo

git clone --depth 1 https://github.com/thierryc/Glyphs-mcp

Made for: Claude Code, Codex.

Or install glyphs-mcp, the plugin that ships this one along with the rest of its 11 skills, 1 MCP server.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/thierryc/glyphs-mcp/glyphs-mcp-icon-font/github.svg)](https://agentmods.dev/skills/thierryc/glyphs-mcp/glyphs-mcp-icon-font)

Your own site

<a href="https://agentmods.dev/skills/thierryc/glyphs-mcp/glyphs-mcp-icon-font"><img src="https://agentmods.dev/badge/skills/thierryc/glyphs-mcp/glyphs-mcp-icon-font/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/thierryc/glyphs-mcp/glyphs-mcp-icon-font"><img src="https://agentmods.dev/badge/skills/thierryc/glyphs-mcp/glyphs-mcp-icon-font.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 558 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00056	$0.00558
Opus 5	$0.00028	$0.00279
Sonnet 5	$0.00011	$0.00112
Haiku 4.5	$0.00006	$0.00056

Measured 13d ago against content hash 577b194d068d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

glyphs-mcp-icon-font 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 13d 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.

plugins/glyphs-mcp/skills/glyphs-mcp-icon-font/SKILL.md · 41 lines

How it starts

The opening of the file, as written. The whole thing — 41 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Glyphs MCP icon font

Use this skill for stable icon-font encoding, not icon drawing or general PUA work.

Core rules

Use only review_unicode_assignments and apply_unicode_assignments for assignment batches.
Run review without allocation before proposing any value.
Preserve every existing assignment.
For a released font, require its previous map before allocation. Without one, audit only unless the user explicitly authorizes a new baseline.
Never infer standard Unicode from an icon name or drawing.
Target selected or named glyphs by default. Use whole-font scope only when explicitly requested.
Default private icon allocation to BMP PUA; accept an explicit caller-supplied range.
Require a dry run and explicit approval before applying with confirm=true.
Never save the font.
Do not create manifests, canonical IDs, CSS, TypeScript, accessibility metadata, Figma workflows, or exported-font cmap reports.

Workflow

Call list_open_fonts, then inspect the target with get_font_glyphs.
Establish whether the font is unreleased or already released. Obtain the previous map for a released font.
Call review_unicode_assignments with allocate_unencoded=false.
Summarize collisions, invalid values, export-state warnings, multiple assignments, previous-map changes, and range capacity.
If allocation is requested and allowed, review again with allocate_unencoded=true, the selected or named glyphs, the previous map, and any reserved values or custom range.
Present the exact proposals and private-agreement warning. Do not reinterpret their meaning.
Pass the reviewed assignments to apply_unicode_assignments with dry_run=true.
After explicit approval, repeat with confirm=true, review the affected glyphs again, and report verification without saving.

For drawing or outline work, use glyphs-mcp-outlines-docs. For metrics, use glyphs-mcp-spacing.

Deeper references

Read the full file on GitHub · 41 lines

Files

What ships with it

1 file 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 333 B

Changes

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.

13d ago First seen · 41 lines · 56 tokens per session scan A 577b194d068d

Subscribe to this mod's changes

glyphs-mcp-icon-font is a skill published in the GitHub repository thierryc/Glyphs-mcp (44 stars, last pushed 2d ago), licensed Apache-2.0. It adds 56 tokens to every session and 558 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.

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