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jau123

MeiGen AI Image Generation MCP

by jau123

comfyui_workflow

Destructive

Manage ComfyUI workflow templates: list, view parameters, import from file, modify settings, or delete.

Instructions

Manage ComfyUI workflow templates: list, view parameters, import from file, modify settings, or delete.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
actionYesAction to perform on ComfyUI workflows
nameNoWorkflow name. Required for view/modify/delete. For import, used as the save name (defaults to filename).
filePathNoPath to a ComfyUI API-format workflow JSON file (for import action).
nodeIdNoNode ID to modify (for modify action). Use "view" action first to see available node IDs.
inputNoInput field name to modify (for modify action). E.g. "steps", "cfg", "sampler_name", "ckpt_name".
valueNoNew value as JSON (for modify action). Examples: "30", "\"euler\"", "7.5", "true".

Schema Changelog

Changes observed during successful MCP inspections.

  1. Addedv1.3.1

TDQS

A3.9/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already indicate destructive action (destructiveHint=true, readOnlyHint=false), and the description's action list is consistent with that. However, the description adds no extra behavioral details such as permanence of deletion, side effects of modification, or output format.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single concise sentence that front-loads the primary verb and lists all supported actions without fluff. It is appropriately sized for the tool's scope.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The tool has a complex multi-action interface with no output schema, and the description does not mention what actions return (e.g., whether view returns the workflow JSON or list returns names). While the param descriptions are thorough, the lack of output/return info leaves a gap for agents.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Input schema has 100% description coverage with detailed descriptions for all six parameters, including the enum for action and examples for modify values. The description itself adds no parameter semantics beyond the schema, so baseline of 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states the tool manages ComfyUI workflow templates and enumerates the five supported actions (list, view, import, modify, delete). This distinguishes it from sibling tools focused on generation or search.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for workflow template management but does not explicitly state when to use this tool over alternatives, nor does it mention any prerequisites or exclusions. However, the action list provides clear context for when each action is appropriate.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.