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os-tack

fcp-drawio

by os-tack
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Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault

No arguments

Instructions

Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.

This server publishes no instructions, or was last inspected before Glama recorded them.

Capabilities

Features and capabilities supported by this server

Protocol revision2025-11-25

CapabilityDetails
tools
{
  "listChanged": true
}
resources
{
  "listChanged": true
}

Tools

Functions exposed to the LLM to take actions

NameDescription
drawioA

Execute drawio operations. Each op string follows the FCP verb DSL.

SHAPES: add TYPE LABEL [theme:T] [near:REF dir:DIR] [at:X,Y] [size:WxH] [label:"Display Name"] remove REF | remove @SELECTOR define NAME base:TYPE [theme:T] [badge:"text"] [size:WxH]

CONNECTIONS: connect SRC ARROW TGT [label:"text"] [style:STYLE] [exit:FACE entry:FACE] disconnect SRC -> TGT

APPEARANCE: style REF [fill:#HEX] [stroke:#HEX] [font:#HEX] [fontSize:N] [bold] [italic] label REF "new text" | label SRC -> TGT "new text" badge REF "text" [pos:POSITION]

POSITION: move REF to:X,Y | to:REGION | near:REF dir:DIR resize REF to:WxH swap REF REF layout @all algo:layered|force|tree dir:TB|LR|BT|RL [spacing:N] orient TB|LR|BT|RL

ORGANIZATION: group REF REF ... as:"Group Name" ungroup "Group Name"

STRUCTURE: page add|switch|remove|list "Name" layer create|switch|show|hide|list "Name"

META: checkpoint NAME title "Diagram Title" load list | load PACK

VISUAL: export [inline|file] [fmt:png|svg|pdf] [width:N] [height:N] [page:N] [as:PATH]

NODE TYPES: box plain rectangle (generic) svc rounded rectangle (services, components) circle ellipse (states, events) decision diamond (decisions, conditions) db cylinder (databases, storage) api hexagon (apis, gateways) cloud cloud (external services) actor person shape (users, personas) doc document shape (files, reports) queue parallelogram (queues, streams) triangle triangle (warnings, deltas) process double-bordered rect (predefined processes)

THEMES (FILL / STROKE): blue #dae8fc / #6c8ebf green #d5e8d4 / #82b366 red #f8cecc / #b85450 yellow #fff2cc / #d6b656 orange #ffe6cc / #d79b00 purple #e1d5e7 / #9673a6 gray #f5f5f5 / #666666 dark #1a1a2e / #16213e (light text) white #ffffff / #000000

EDGE STYLES: solid, dashed (- - -), dotted (· · ·), animated, thick, curved, orthogonal Arrows: -> (directed), <-> (bidirectional), -- (undirected) Arrow heads: arrow, open-arrow, diamond, circle, crow-foot, none

SELECTORS: @type:TYPE, @group:NAME, @connected:REF, @recent, @recent:N, @all, @orphan, @page:NAME, @layer:NAME

RESPONSE PREFIXES:

  • shape created ~ edge created/modified

  • shape modified - shape/edge removed ! group operation @ layout/position change

CONVENTIONS:

  • Labels are unique identifiers - no ID management needed

  • Position auto-computed if omitted (near last created shape)

  • near:REF dir:DIRECTION places relative to existing shape

  • All XML structure, IDs, and geometry handled by the tool

  • Call drawio_help for full reference with examples

drawio_queryA

Query drawio state. Read-only.

drawio_sessionC

drawio lifecycle: new, open, save, checkpoint, undo, redo.

drawio_helpA

Returns the drawio FCP reference card.

Prompts

Interactive templates invoked by user choice

NameDescription

No prompts

Resources

Contextual data attached and managed by the client

NameDescription
session-statusCurrent drawio session state
Deploy Server
One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

TDQS

B3.3/5.0

Scored across 4 tools

Disambiguation4/5

The four tools have distinct purposes: drawio performs all diagram operations, drawio_help provides reference, drawio_query is read-only, and drawio_session manages lifecycle. However, the monolithic drawio tool bundles many actions into one, causing potential ambiguity for the agent when selecting the exact operation needed.

Naming Consistency5/5

All tool names follow a consistent 'drawio_<suffix>' pattern (drawio, drawio_help, drawio_query, drawio_session), making it predictable and easy to navigate.

Tool Count2/5

With only 4 tools for a complex diagramming domain, the count is too low. The main drawio tool alone encapsulates dozens of operations (shapes, connections, appearance, layout, etc.), which should ideally be split into multiple focused tools to avoid overloading the agent.

Completeness4/5

The monolithic drawio tool covers a broad range of operations: shapes, connections, styles, grouping, pages, layers, export, etc. Minor gaps might exist (e.g., importing), but the overall functionality is comprehensive for creating and editing diagrams.

Maintenance

ActivityStale
ResponsivenessNo issues

Resources