Command set

Glyphs MCP 1.11 uses one catalog-driven surface: 87 active tools, with 76 model-visible and 11 app-only tools. There is no Read-only/Edit profile selector; safety is expressed per tool through MCP annotations, explicit targets, dry runs, confirmation, verification, and rollback.

App-only tools support the embedded feedback interface or host UI and are hidden from model routing when the client honors MCP Apps visibility. Structured results cover document audit, outline editing, candidate, curve, spacing, kerning, and LitSquare metadata workflows; concise text fallbacks remain available.

Category summary

Category	Active tools
annotations	7
app-feedback	9
automation	2
candidates	10
components	4
curve-geometry	7
document-audit	1
documentation	2
export	1
features	1
font	5
glyph-editing	5
italic	2
kerning	5
litsquare	7
outlines	6
parameters	2
persistence	1
selection	3
server	1
spacing	4
unicode	2

Active tools

Tool	Title	Category	Visibility	Effect	Structured output	Description
add_glyph_annotation	Add Glyph Annotation	annotations	model+app	edit	—	Add one native annotation to an explicit layer and record Glyphs MCP ownership.
add_glyph_annotation_group	Add Glyph Annotation Group	annotations	model+app	edit	—	Add a linked group of native annotations to one explicit glyph layer.
clear_glyph_annotations	Clear Glyph Annotations	annotations	model+app	edit	—	Clear managed annotations by default, or all annotations only with explicit scope.
delete_glyph_annotation	Delete Glyph Annotation	annotations	model+app	edit	—	Delete one explicitly identified native annotation from one glyph layer.
get_glyph_annotation_groups	Get Glyph Annotation Groups	annotations	model+app	read	—	Read Glyphs MCP-managed annotation groups for one explicit glyph layer.
get_glyph_annotations	Get Glyph Annotations	annotations	model+app	read	—	Read native annotations and Glyphs MCP ownership metadata for one explicit glyph layer.
update_glyph_annotation	Update Glyph Annotation	annotations	model+app	edit	—	Update one explicitly identified native annotation without touching unrelated items.
apply_feedback_plan	Apply Feedback Plan	app-feedback	app-only	edit	feedback	Apply one unexpired embedded feedback plan after explicit app confirmation.
open_feedback_target	Open Feedback Target	app-feedback	app-only	ui	feedback	Open resolved glyph targets from an embedded feedback result in a new Glyphs tab.
preview_handle_smoothing_feedback	Preview Handle Smoothing Feedback	app-feedback	app-only	read	feedback	Preview an exact handle-smoothing plan in the embedded feedback panel.
preview_kerning_feedback	Preview Kerning Feedback	app-feedback	app-only	read	feedback	Preview an exact kerning plan in the embedded feedback panel without mutation.
preview_spacing_feedback	Preview Spacing Feedback	app-feedback	app-only	read	feedback	Preview an exact spacing plan in the embedded feedback panel without mutation.
show_font_feedback	Show Font Feedback	app-feedback	app-only	read	feedback	Show read-only information for one open font in the embedded feedback panel.
show_glyph_feedback	Show Glyph Feedback	app-feedback	app-only	read	feedback	Show read-only glyph metadata in the embedded feedback panel.
show_glyphs_status	Show Glyphs Status	app-feedback	app-only	read	feedback	Show local server, Glyphs, and open-font status in the embedded feedback panel.
show_opentype_features	Show OpenType Features	app-feedback	app-only	read	feedback	Show a read-only OpenType feature report in the embedded feedback panel.
execute_code	Execute Code	automation	model+app	code	—	Run bounded Python in Glyphs when no dedicated tool fits; this can change fonts or external state.
execute_code_with_context	Execute Code With Context	automation	model+app	code	—	Run bounded Python with an explicit font and glyph context when dedicated tools are insufficient.
accept_outline_candidate_session	Accept Outline Candidate Session	candidates	model+app	edit	candidate	Dry-run or promote only the exact reviewed candidate fields after confirmation.
discard_outline_candidate_session	Discard Outline Candidate Session	candidates	model+app	edit	candidate	Dry-run or delete only materialized layers owned by one candidate session.
get_outline_candidate_state	Get Outline Candidate State	candidates	model+app	read	candidate	Read bounded ephemeral and materialized candidate-session state without mutation.
materialize_outline_candidate_session	Materialize Outline Candidate Session	candidates	model+app	edit	candidate	Dry-run or create editable candidate layers for one reviewed session.
preview_collinear_handles_candidate	Preview Collinear Handles Candidate	candidates	model+app	ui	candidate	Create a detached smooth-node candidate for explicit path and node targets.
preview_compensated_tuning_candidate	Preview Compensated Tuning Candidate	candidates	model+app	ui	candidate	Create detached compensated-tuning candidates for explicit glyphs and masters.
preview_italic_first_pass_candidate	Preview Italic First Pass Candidate	candidates	model+app	ui	candidate	Create a detached Roman-to-italic construction draft for guarded visual review.
preview_tunni_balance_candidate	Preview Tunni Balance Candidate	candidates	model+app	ui	candidate	Create a detached multi-target Tunni candidate and show only its visual difference.
review_outline_candidate_session	Review Outline Candidate Session	candidates	model+app	read	candidate	Revalidate a candidate against its live source and issue a fingerprint-bound token.
set_outline_candidate_overlay	Set Outline Candidate Overlay	candidates	model+app	ui	candidate	Show, hide, switch, or clear ephemeral candidate Reporter state without editing fonts.
add_anchor_to_glyph	Add Anchor To Glyph	components	model+app	edit	—	Add one anchor at explicit coordinates on one targeted glyph layer.
add_component_to_glyph	Add Component To Glyph	components	model+app	edit	—	Add one component to an explicit glyph layer after validating its target.
add_corner_to_all_masters	Add Corner To All Masters	components	model+app	edit	—	Add one corner hint at selected compatible nodes across explicit masters.
get_glyph_components	Get Glyph Components	components	model+app	read	—	Inspect component identities, transforms, smart values, and target layers for one glyph.
apply_collinear_handles_smooth	Apply Collinear Handles Smooth	curve-geometry	model+app	edit	—	Dry-run or mark explicit collinear curve nodes smooth after confirmation.
apply_tunni_balance	Apply Tunni Balance	curve-geometry	model+app	edit	curve	Dry-run or balance explicit cubic handles after confirmation and exact read-back verification.
get_curve_review_overlay_state	Get Curve Review Overlay State	curve-geometry	app-only	read	curve	Read bounded native curve Reporter state for the embedded Glyphs app.
review_curve_quality	Review Curve Quality	curve-geometry	model+app	read	curve	Measure adaptive cubic events, curvature, continuity, and warnings on one explicit raw path.
review_curve_quality_across_masters	Review Curve Quality Across Masters	curve-geometry	model+app	read	curve	Compare compatible cubic geometry and quality measurements across explicit masters.
review_tunni_geometry	Review Tunni Geometry	curve-geometry	model+app	read	curve	Measure grid-safe Tunni balance for explicit cubic path segments without changing the font.
set_curve_review_overlay	Set Curve Review Overlay	curve-geometry	model+app	ui	curve	Show or hide native curvature and curve-event overlays in Glyphs Edit View.
get_document_change_overview	Get Document Change Overview	document-audit	model+app	read	document-audit	Read the bounded MCP mutation overview for one tracked open Glyphs document.
docs_get	Docs Get	documentation	model+app	docs	—	Fetch one bundled Glyphs documentation page by its exact result ID or path.
docs_search	Docs Search	documentation	model+app	docs	—	Search the bundled official Glyphs API, plug-in, and file-format documentation without changing state.
ExportDesignspaceAndUFO	Export Designspace and UFO	export	model+app	files	—	Export designspace and UFO packages for one selected font to an explicit directory.
list_style_sets	List Style Sets	features	model+app	read	—	List OpenType stylistic sets, substitutions, and direct Glyphs review links without mutation.
get_font_glyphs	Get Font Glyphs	font	model+app	read	—	List bounded glyph metadata for one explicit open font without changing it.
get_font_instances	Get Font Instances	font	model+app	read	—	Read instance metadata for one explicit open font without changing it.
get_font_masters	Get Font Masters	font	model+app	read	—	Read masters, IDs, design metrics, and italic angles for one explicit open font.
list_open_fonts	List Open Fonts	font	model+app	read	—	List every font currently open in Glyphs and return stable font indices for later calls.
set_master_italic_angle	Set Master Italic Angle	font	model+app	edit	—	Dry-run or set one master's Glyphs italicAngle after explicit confirmation; never saves.
copy_glyph	Copy Glyph	glyph-editing	model+app	edit	—	Copy outline data from one explicit glyph to another after validating the destination.
create_glyph	Create Glyph	glyph-editing	model+app	edit	—	Create one named glyph in an explicit open font; does not save the document.
delete_glyph	Delete Glyph	glyph-editing	model+app	edit	—	Delete one named glyph from an explicit open font; use only after confirming references.
update_glyph_metrics	Update Glyph Metrics	glyph-editing	model+app	edit	—	Update width or sidebearings on one explicit glyph and master without saving.
update_glyph_properties	Update Glyph Properties	glyph-editing	model+app	edit	—	Update explicit glyph metadata fields without changing unrelated properties or saving.
review_master_stem_metrics	Review Master Stem Metrics	italic	model+app	read	—	Review master stem metrics required by italic construction without changing the font.
set_master_stem_metrics	Set Master Stem Metrics	italic	model+app	edit	—	Dry-run or set explicit master stem metrics after confirmation; never saves.
apply_kerning_bumper	Apply Kerning Bumper	kerning	model+app	edit	kerning	Dry-run or apply explicit reviewed kerning exceptions after confirmation; never saves.
generate_kerning_tab	Generate Kerning Tab	kerning	app-only	ui	—	Open a bounded kerning proof tab in Glyphs for interactive review.
get_font_kerning	Get Font Kerning	kerning	model+app	read	kerning	Read bounded kerning data for one explicit font and master without changing it.
review_kerning_bumper	Review Kerning Bumper	kerning	model+app	read	kerning	Measure bounded kerning collisions and propose conservative exceptions without mutation.
set_kerning_pair	Set Kerning Pair	kerning	model+app	edit	kerning	Set or remove one explicit kerning pair in one master; does not save the font.
get_icon_grid_horizontal_center	Get Icon Grid Horizontal Center	litsquare	model+app	read	litsquare	Read one layer's fixed IconGrid center plus advance and layer-content position candidates.
get_litsquare_metadata	Get LitSquare Metadata	litsquare	model+app	read	litsquare	Read direct LitSquare metadata, validation states, provenance, and effective settings for an explicit target.
get_selected_litsquare_path_roles	Get Selected LitSquare Path Roles	litsquare	model+app	read	litsquare	Read selected LitSquare path roles with stable targets, counts, descriptions, and individual bounds.
patch_litsquare_metadata	Patch LitSquare Metadata	litsquare	model+app	edit	litsquare	Dry-run or confirm an RFC 7396 patch to one LitSquare metadata scope; preserves unknown data and never saves.
reset_icon_grid_horizontal_center	Reset Icon Grid Horizontal Center	litsquare	model+app	edit	litsquare	Dry-run or remove only one layer's namespaced IconGrid center policy while preserving unrelated data.
set_icon_grid_horizontal_center	Set Icon Grid Horizontal Center	litsquare	model+app	edit	litsquare	Dry-run or store one explicit fixed IconGrid x-coordinate on a layer; never edits artwork or saves.
set_litsquare_path_roles	Set LitSquare Path Roles	litsquare	model+app	edit	litsquare	Dry-run or atomically confirm open-string LitSquare roles on fingerprinted paths; preserves other attributes and never saves.
apply_start_node_alignment	Apply Start Node Alignment	outlines	model+app	edit	outline	Dry-run or atomically apply one fingerprint-bound joint start-node alignment after confirmation; never saves.
get_glyph_details	Get Glyph Details	outlines	model+app	read	—	Inspect one glyph's layers, metrics, shapes, anchors, components, and compatibility metadata.
get_glyph_paths	Get Glyph Paths	outlines	model+app	read	—	Read editable path data for one glyph and master in a bounded round-trip-safe format.
review_start_node_alignment	Review Start Node Alignment	outlines	model+app	read	outline	Review one semantic start-node landmark as a joint cyclic phase across explicit compatible masters.
set_glyph_paths	Set Glyph Paths	outlines	model+app	edit	—	Replace paths on one explicit glyph layer after validation; preserves surrounding shapes and never saves.
update_glyph_node_positions	Update Glyph Node Positions	outlines	model+app	edit	outline	Dry-run or atomically update explicit node coordinates on one glyph layer using the font grid by default.
get_custom_parameters	Get Custom Parameters	parameters	model+app	read	—	Read generic font or master custom parameters without changing the document.
set_custom_parameters	Set Custom Parameters	parameters	model+app	edit	—	Dry-run or atomically set explicit custom parameters after confirmation; never saves.
save_font	Save Font	persistence	model+app	save	—	Save one explicit open font to its current path or an explicit new path.
get_selected_font_and_master	Get Selected Font And Master	selection	model+app	read	—	Read the active font, master, and selection context from Glyphs without changing it.
get_selected_glyphs	Get Selected Glyphs	selection	model+app	read	—	Read the current Glyphs font-view selection and return exact glyph targets and links.
get_selected_nodes	Get Selected Nodes	selection	model+app	read	—	Read selected Edit View nodes with glyph, layer, path, node, and master mapping.
get_server_info	Get Server Info	server	model+app	read	—	Read local server identity, runtime health, and open-font count without changing Glyphs.
apply_spacing	Apply Spacing	spacing	model+app	edit	spacing	Dry-run or apply reviewed spacing to explicit glyphs after confirmation; never saves.
review_spacing	Review Spacing	spacing	model+app	read	spacing	Measure and propose class-aware spacing for explicit glyphs without changing the font.
set_spacing_guides	Set Spacing Guides	spacing	model+app	edit	spacing	Add or clear only Glyphs MCP spacing guides on explicit glyph layers.
set_spacing_params	Set Spacing Params	spacing	model+app	edit	spacing	Dry-run or set spacing custom parameters for one font or master without saving.
apply_unicode_assignments	Apply Unicode Assignments	unicode	model+app	edit	—	Dry-run or atomically apply explicit Unicode mappings after collision checks.
review_unicode_assignments	Review Unicode Assignments	unicode	model+app	read	—	Review Unicode mappings and deterministic allocation proposals without changing glyphs.

Removed in 1.8

These tombstones are retained for migration guidance but are not registered.

Removed tool	Replacement
apply_compensated_tuning	accept_outline_candidate_session
apply_italic_first_pass	accept_outline_candidate_session
docs_enable_page_resources	docs_search
measure_stem_ratio	preview_compensated_tuning_candidate
render_glyph_review_image	set_curve_review_overlay
review_collinear_handles	preview_collinear_handles_candidate
review_compensated_tuning	preview_compensated_tuning_candidate
review_italic_first_pass	preview_italic_first_pass_candidate

Curve review in 1.8

review_curve_quality defaults to adaptive geometry data version 2 and reports extrema, inflections, stationary points, cusps, arc length, turning angle, bounded self-intersections, and G0/G1/G2 join measurements. Use analysis_mode="sampled_v1" only for a reproducible 1.7 sampling baseline.

review_curve_quality_across_masters compares those measurements only after compatible topology and cubic mapping are verified. set_curve_review_overlay accepts overlays=["curvature"], overlays=["curve_events"], or both; candidate differences remain in the separate Candidate Reporter.

Candidate safety sequence

Use a typed preview tool, inspect get_outline_candidate_state, call review_outline_candidate_session, dry-run accept_outline_candidate_session with the returned token, and request explicit approval before confirmed acceptance. Materialize only when manual editing is needed. None of these tools saves the font.