ComfyMCP Studio (tuannguyen14/ComfyAI-MCP-GameAssets) is an MCP server listed on the M8ven Trust Index. It scores 64 out of 100, grade C. It declares 12 tools. No publisher has claimed this listing.
Generates 2D game assets (sprites, icons, tilesets, characters, animations) using AI workflows powered by ComfyUI with support for viewpoint control, style presets, and Unity export.
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Install from
The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.
list_available_presetsList all available style presets for asset generation. Returns: JSON object containing all presets with their configurations
generate_spriteGenerate a single game sprite from a text description. Args: prompt: Description of the sprite to generate (e.g., "a blue slime monster") preset: Style preset to use (default, pixel_16, pixel_32, flat_ui, handpainted, etc.) width: Override width in pixels height: Override height in pixels negative_p…
generate_iconsGenerate multiple game icons from a list of descriptions. Args: prompts: List of icon descriptions (e.g., ["sword", "shield", "potion"]) preset: Style preset to use (default: icon). Options: icon, icon_item, flat_ui size: Icon size in pixels (square) seed: Base seed for reproducibility (each icon ge…
generate_tilesetGenerate a set of tileable game tiles. Args: theme: Overall theme for the tileset (e.g., "forest", "dungeon", "sci-fi") tile_types: List of tile types to generate (e.g., ["ground", "wall", "water"]) preset: Style preset to use (default: tileset). Options: tileset, topdown_tile tile_size: Size of eac…
generate_characterGenerate character sprites with optional multiple poses. Args: description: Character description (e.g., "a knight in silver armor") poses: List of poses to generate (e.g., ["idle", "walking", "attacking"]) preset: Style preset to use (default: character). Options: character, character_portrait, pix…
generate_character_animationsGenerate multiple character poses with consistent identity using img2img. This tool takes a reference character image and generates variations with different poses while maintaining the same character identity (outfit, colors, style). Args: reference_image_base64: Base64 encoded reference character …
generate_with_viewpointGenerate a game asset with precise camera viewpoint control using ControlNet. This tool uses depth maps to guide the generation, ensuring consistent camera angles like top-down, side view, front view, etc. Args: prompt: Description of the asset to generate (e.g., "a wooden barrel") view_type: Camera…
generate_topdown_assetSimplified tool to generate top-down 2D game assets with guaranteed viewpoint. This is a convenience wrapper around generate_with_viewpoint specifically for top-down games (RPG, strategy, etc.). Args: prompt: Description of the asset (e.g., "wooden treasure chest", "stone well") asset_type: Type of …
process_imageApply post-processing operations to an image. Args: image_base64: Base64 encoded input image operations: List of operations to apply: "resize", "remove_background", "add_outline" resize_width: Target width for resize operation resize_height: Target height for resize operation outline_color: Hex colo…
create_sprite_atlasCombine multiple images into a sprite atlas/spritesheet. Args: images_base64: List of base64 encoded images columns: Number of columns in the atlas padding: Padding between sprites in pixels save_to_file: Whether to save atlas to disk filename: Custom filename for the atlas Returns: JSON with the co…
export_to_unityExport a generated asset directly to a Unity project. Args: image_base64: Base64 encoded image to export asset_name: Name for the asset file (without extension) asset_type: Unity folder type (Sprites, Textures, UI, etc.) subfolder: Optional subfolder within the asset type folder Returns: JSON with e…
batch_generateGenerate multiple assets in batch from a list of prompts. Args: prompts: List of asset descriptions preset: Style preset to use for all generations width: Override width for all assets height: Override height for all assets seed: Base seed for reproducibility (each prompt gets seed+index) save_to_fi…
BACKEND_TYPE"": "comfyui",COMFYUI_HOST"": "127.0.0.1",COMFYUI_PORT"": "8188"OUTPUT_DIRGenerated images are saved under when you call tools with save_to_file=true.UNITY_ASSETS_DIRC:/Projects/MyGame/AssetsALLOW_WRITE_ROOTSMAX_IMAGE_BASE64_CHARSMCP_TRANSPORTMCP_MOUNT_PATHCOMFYUI_CHECKPOINTsd_xl_base_1.0.safetensorsTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
12/12 tools missing one or more hints — list_available_presets (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); generate_sprite (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); generate_icons (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +9 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Descriptions match behaviour
5 tools describe read intent but their handlers mutate — generate_icons (line 276: file_path.write_bytes(image_bytes)); generate_character (line 468: file_path.write_bytes(image_bytes)); generate_with_viewpoint (line 729: file_path.write_bytes(image_bytes))
Rename the tool, rewrite the description, or move the side-effect into a separate clearly-named tool.
License file
No license file
Add a LICENSE file (MIT, Apache-2.0, etc.).
Tool test coverage
6/12 tools referenced in tests (50%)
Write tests that reference each tool by name so every tool has at least one test.
Tool description accuracy
5 tools have description/behavior mismatches: generate_icons: description implies read-only but handler writes/deletes/executes; generate_character: description implies read-only but handler writes/deletes/executes; generate_with_viewpoint: description implies read-only but handler writes/deletes/executes
Update tool descriptions to accurately reflect all capabilities — especially write, delete, or execute operations.
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