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MCP server · Content

Glyphs MCP

by · github.com/nmassi/glyphs-mcp

Glyphs app mcp server

Unclaimed MIT content
InstallView source
64Good

Scored 6 days ago · breakdown

About Glyphs MCP

Glyphs MCP is an MCP server published by nmassi in the Content category: glyphs app mcp server.

The repository has 10 stars and 0 forks, with the last commit 29 days ago. Recent commit activity is the strongest signal that reported issues will get attention.

Install

From source
git clone https://github.com/nmassi/glyphs-mcp

This server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.

Tools (8)

get_featuresOpenType feature code

Parameters not published.

get_font_infoFont family name, UPM, glyph count, masters, axes, metrics, instances

Parameters not published.

get_glyphFull glyph data: paths, components, anchors, sidebearings for all layers

Parameters not published.

get_glyph_svgGlyph rendered as SVG markup

Parameters not published.

get_kerningAll kerning pairs for a master

Parameters not published.

get_mastersAll masters with metrics and axis positions

Parameters not published.

get_selectionCurrent editor selection: active glyph, layer, selected paths/nodes

Parameters not published.

list_glyphsAll glyph names with unicode, category, layer count

Parameters not published.

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Security checks

  • ✓README presentThe repository ships documentation.
  • ✓License declaredUsable under a stated license.
  • !Scoped permissionsDoesn't declare a permission scope. Assume it can do anything its process can.

3 checks have not been run yet.

Releases

v0.2.6v0.2.6 · 17 Sep 2026GlyphsMCP 0.2.6 This release fixes plugin loading and introduces a friendlier, client-native connection workflow directly from GlyphsApp. Client connections The new **Window > GlyphsMCP > Connect** menu supports: Claude Code Codex /…
v0.2.5v0.2.5 · 16 Sep 2026GlyphsMCP 0.2.5 This release expands the public GlyphsMCP server to 54 tools and brings its core type-design workflows in line with the latest plugin capabilities. New tools `analyze_kerning_groups` `auto_kern` `check_font_name`…
v0.2.1v0.2.1 · 3 Mar 2026Enhance spacing and kerning analysis with industry-standard checks analyze_spacing: add Tracy/Smith per-glyph sidebearing rules (40+ glyphs), side-type ordering validation (straight > round > diagonal), counter-based validation (LSB as %…
v0.2.0v0.2.0 · 25 Feb 2026Changelog v0.2.0 — 2026-02-25 New features Master compatibility check** (`check_compatibility` tool / `POST /api/font/compatibility/check`) Checks all glyphs (or a subset) for interpolation compatibility across masters. Returns a formatted…
v0.1.1v0.1.1 · 24 Feb 2026Rename menu from GlyphsMCP to MCP Update README with Plugin Manager install instructions and screenshots Remove tracked .DS_Store

README

MCP bridge for AI-assisted type design in GlyphsApp.

Lets Claude, Cursor, or any MCP client read and write font data directly in GlyphsApp — bidirectional, real-time, live in the editor.

MCP Client  ←(stdio/MCP)→  MCP Server  ←(HTTP/localhost)→  GlyphsApp Plugin

Requirements

Installation

1. Install the GlyphsApp plugin

From Plugin Manager (recommended): Open GlyphsApp, go to Window > Plugin Manager, search for MCP, and click Install.

Manual install: Download GlyphsMCP.glyphsPlugin.zip from the latest release, unzip, and double-click to install.

Restart GlyphsApp. You should see GlyphsMCP under the Window menu.

2. Connect your MCP client

Claude Code:

claude mcp add glyphs-mcp -- uvx glyphs-mcp

Cursor / VS Code — add to your MCP config:

{
  "mcpServers": {
    "glyphs-mcp": {
      "command": "uvx",
      "args": ["glyphs-mcp"]
    }
  }
}

That's it.

3. Use it

Open a font in GlyphsApp, then ask your AI assistant:

"Run a full color audit on my font and tell me which glyphs are inconsistent"

"Compare the stems across all my lowercase letters"

"Check if my figures are consistent with my letters"

"Make the R 20% wider and harmonize the curves"

"Analize metrics on lowercases"

Tools

Read

Tool Description
get_font_info Font family name, UPM, glyph count, masters, axes, metrics, instances
list_glyphs All glyph names with unicode, category, layer count
get_glyph Full glyph data: paths, components, anchors, sidebearings for all layers
get_glyph_svg Glyph rendered as SVG markup
get_selection Current editor selection: active glyph, layer, selected paths/nodes
get_masters All masters with metrics and axis positions
get_kerning All kerning pairs for a master
get_features OpenType feature code

Write

Tool Description
create_glyph Create a new glyph with optional width, unicode, and initial paths
set_glyph_paths Replace all paths on a glyph's layer
set_glyph_width Set advance width
set_glyph_color Set color label (0-11)
set_glyph_unicode Assign or clear a unicode value
rename_glyph Rename a glyph
duplicate_glyph Copy a glyph with all layers to a new name
delete_glyph Delete a glyph
set_kerning_pair Add or modify a kerning pair
delete_kerning_pair Remove a kerning pair
set_feature_code Create or update an OpenType feature

Analysis

Tool Description
measure_stems Measure stem thicknesses via perpendicular ray-casting
compare_stems Compare stems across glyphs using industry patterns
get_stem_targets Designer's intended stem values from Dimensions palette
measure_color Measure ink density for a single glyph
compare_color Compare ink density across glyphs
audit_font_color Full font color audit across all letters
check_overshoots Overshoot consistency at baseline, x-height, cap-height
compare_proportions Width ratios, related-form groups, ordering constraints
check_diagonal_weights Diagonal stem thickness vs straight reference
check_junctions Stem thinning at arch/bowl junctions
check_related_forms Cross-validate figures and letters (0/O, 6/9, 8/S, 3/B)
check_punctuation Mirrored pair widths, dash ratios, related punctuation
check_compatibility Master compatibility: paths, nodes, components, anchors
analyze_kerning Kerning quality: cross-master gaps, orphans, outliers
analyze_spacing Spacing quality: sidebearing groups, symmetry, drift

Analysis tools automatically mark glyphs in GlyphsApp: red = inconsistent, orange = unreliable, yellow = optical compensation, green = pass.

RMX Tools

Requires RMX Tools for full functionality. Falls back to native transforms when RMX is unavailable.

Tool Description
rmx_harmonize Optimize bezier curves
rmx_scale Scale by percentage with stroke weight compensation
rmx_tune Adjust weight, width, height, or slant
rmx_monospace Adjust a glyph to a fixed advance width
rmx_batch Apply any RMX filter to multiple glyphs

Advanced

Tool Description
execute_in_glyphs Run arbitrary Python inside GlyphsApp (disabled by default)

Multi-master support

All tools accept an optional master_id parameter. When omitted, read/write tools use the first master. Analysis tools analyze all masters and return per-master results.

Menu

The plugin adds a GlyphsMCP submenu under Window in the menu bar:

  • Start/Stop Server — toggle the HTTP server
  • Connect — copy ready-to-paste MCP config for Claude Code or VS Code (and forks)
  • Documentation — open this page in your browser
  • Allow Execute Endpoint — enable execute_in_glyphs (off by default for security)

Preferences

Key Default Description
com.nico.glyphs-mcp.port 7745 HTTP server port
com.nico.glyphs-mcp.autostart true Start server on GlyphsApp launch
com.nico.glyphs-mcp.allowExecute false Enable the execute endpoint

How it works

The GlyphsApp plugin runs an HTTP server on 127.0.0.1:7745 inside GlyphsApp. All GlyphsApp API calls run on the main thread via a queue + NSTimer bridge for thread safety.

The MCP server is a thin translation layer — it receives MCP tool calls via stdio and forwards them as HTTP requests to the plugin.

Roadmap

  • Font proofing — Generate proof strings for spacing/kerning evaluation
  • Auto-update — Check for updates directly from the GlyphsMCP menu
  • Analytics — Optional usage telemetry to guide development priorities

License

MIT — Nicolas Massi www.nico.works

README copy captured when this server was indexed; it may lag the repository. The original is authoritative.

Questions

About Glyphs MCP

How do I install Glyphs MCP?

No package has been published for this server, so install it from source: clone the repository and follow its README.

Is Glyphs MCP safe to use with an AI agent?

Its trust score is 64 out of 100 (good). It passes 2 of the 3 static security checks run so far; the failures are listed above. It has no ConduID identity yet, so agent calls to it are not receipted.

Is Glyphs MCP still maintained?

Yes — the latest release is v0.2.6 (17 Sep 2026), and the last commit was 29 days ago. The repository has 10 stars.