Forge Tool Schemas

The open-source tool schema registry for AI-assisted game development.

927 structured tool definitions across 33 schema files — covering Blueprint automation, 3D generation, animation, simulation, multiplayer, combat, narrative, cinematics, AI intelligence, media generation, publishing, accessibility, localization, and more. Designed for Unreal Engine 5 and cross-engine workflows.

These schemas power BlueprintForge, but they're published here for anyone building AI-assisted game development tools.

What's Inside

Core & Framework

Schema File	Domain	Tools	Description
core-tools.json	Core	8	Server health, Blueprint queries, asset search, caching, transaction history
blueprint-tools.json	Blueprint Automation	26	Actor spawning, node creation, pin connections, variable management, batch operations
anim-tools.json	Animation	6	AnimBP state machines, transitions, blend spaces, validation
ai-router-tools.json	AI Providers	18	Provider routing, cost estimation, chat, generation across 11 providers
gameforge-tools.json	Game Framework	7	Game systems, prototyping, framework scaffolding
marketplace-tools.json	Marketplace	5	Community sharing, templates, workflows
assetorganizer-tools.json	Asset Management	15	Collection management, duplicate detection, health analysis, auto-tagging

Simulation & Vehicles

Schema File	Domain	Tools	Description
simforge-tools.json	Simulation	35	Physics, weather, terrain generation, telemetry, vehicle dynamics
aerostudio-tools.json	Aerospace	47	Aerodynamic modeling, flight dynamics, propulsion, avionics, CFD analysis
flightsim-tools.json	Flight Systems	50	Cockpit instruments, control surfaces, navigation, autopilot, radio systems
racesim-tools.json	Racing	45	Tire models, suspension tuning, race AI, track generation, pit strategy
spacesim-tools.json	Space	48	Orbital mechanics, ship systems, procedural star systems, zero-G physics
inputforge-tools.json	Input Systems	46	Controller mapping, force feedback, HOTAS, wheel support, input replay

Game Systems

Schema File	Domain	Tools	Description
narrativeforge-tools.json	Quest & Dialogue	50	Branching quests, dialogue trees, NPC behaviors, factions, story arcs
combatforge-tools.json	Combat Systems	35	Abilities, skill trees, damage systems, status effects, encounter design
characterforge-tools.json	Character AI	48	Personality systems, behavior trees, companion AI, crowd systems, voice casting
inventoryforge-tools.json	Inventory & Loot	15	Item databases, crafting systems, loot tables, equipment, vendors
worldsim-tools.json	Open World	50	Procedural terrain, NPC systems, quest generation, economy, weather
multiplayerforge-tools.json	Multiplayer	61	EOS, Nakama, PlayFab integration, lobbies, matchmaking, replication, hosting
aiforge-tools.json	AI Intelligence	38	Perception, adaptive difficulty, AI director, companion training, emergent behaviors

Content Creation & Media

Schema File	Domain	Tools	Description
cinematicsforge-tools.json	Cinematics	25	Camera rigs, sequencer automation, shot composition, color grading, storyboards
mediaforge-tools.json	Media Generation	31	AI video, music, SFX generation, lip sync, ambient soundscapes
blenderforge-tools.json	Blender Bridge	8	Blender MCP connection, mesh import/export, scene snapshots
hudplanning-tools.json	HUD Prototyping	24	Canvas creation, widget placement, data binding, responsive layouts, theming
creative-suite-tools.json	Creative Generation (Legacy)	3	3D model, image, and audio generation — superseded by MediaForge and ForgeWorks

Publishing & Production

Schema File	Domain	Tools	Description
uiforge-tools.json	UI & HUD	32	HUD elements, menus, mobile layouts, navigation, style systems
saveforge-tools.json	Save Systems	15	Persistence, cloud saves, checkpoints, achievements, new game plus
localizationforge-tools.json	Localization	30	Auto-translation, per-language TTS, string tables, dialogue localization
accessforge-tools.json	Accessibility	12	Colorblind modes, font scaling, screen reader, input remapping, audit reports
publishforge-tools.json	Publishing	24	Store listings, mobile preflight, release checklists, marketing copy, compliance
automationkit-tools.json	CI/CD Automation	20	PIE control, editor scripting, build pipelines, workflow orchestration
gitforge-tools.json	Version Control	31	Git operations, GitHub API, PRs, issues, releases, branch management
engineswap-tools.json	Cross-Engine	19	UE5/Unity/Godot conversion, Blueprint-to-C#, Niagara-to-VFX Graph

Total: 935 tool definitions across 33 schema files.

Schema Format

Each file is a JSON array of tool objects:

[
  {
    "name": "actor_spawn",
    "category": "BlueprintTools",
    "description": "Spawn an actor in the current level with specified class, location, rotation, and scale.",
    "parameters": [
      {
        "name": "class_name",
        "type": "string",
        "description": "Actor class to spawn (e.g., 'StaticMeshActor', 'PointLight')",
        "required": true
      },
      {
        "name": "location",
        "type": "object",
        "description": "World location {x, y, z}",
        "required": false,
        "default": {"x": 0, "y": 0, "z": 0}
      }
    ],
    "annotations": {
      "readOnly": false,
      "destructive": false,
      "idempotent": false,
      "openWorld": false
    }
  }
]

Fields

Field	Type	Description
name	string	Tool identifier (snake_case)
category	string	Module or domain the tool belongs to
description	string	What the tool does
parameters	array	Input parameters with name, type, description, required flag, and optional default
annotations	object	Behavioral metadata — readOnly, destructive, idempotent, openWorld

Annotations

• readOnly — Tool only reads data, never modifies state
• destructive — Tool deletes or irreversibly modifies assets
• idempotent — Running the tool twice with the same input produces the same result
• openWorld — Tool interacts with external services (AI providers, network, etc.)

Use Cases

• Build your own AI game dev assistant — Use these schemas as the tool registry for any LLM-powered game development agent
• Train game-dev-specific models — Structured data for fine-tuning models on UE5 automation tasks
• Create custom integrations — Wire schemas into MCP servers, VS Code extensions, or CI/CD pipelines
• Cross-engine tooling — The EngineSwap schemas document 505 API mappings between UE5, Unity, and Godot

About BlueprintForge

BlueprintForge is a free AI-powered plugin for Unreal Engine 5 with 75+ core tools at zero cost. It's part of the Forge Ecosystem — 27 addon modules, 10 studio suites, and 1,000+ tools per engine across UE5, Unity, and Blender.

• Website: blueprintforge.studio
• Fab Store: Coming soon
• Unity Asset Store: Coming soon

License

These schemas are released under the MIT License. Use them freely in your own projects, commercial or otherwise.

Contributing

We welcome contributions:

• New tool definitions for game development domains we haven't covered
• Improvements to parameter descriptions and type annotations
• Schema validation tooling
• Documentation and examples

Open a PR or issue to get started.

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