GripForge

official

The tools your AI needs to make your games. Turn prompts into production-ready game assets — animated characters with their weapons attached, seamless textures, terrain, VFX, HUDs — and playable game kits Unity, Godot, Unreal or Three.js can load.

View on gripforge.ai

What can you do with GripForge MCP?

Search and install game kits — Ask your assistant to find modular gameplay kits in the locker and install them into your project via gripforge_gamekit_search and gripforge_gamekit_install.
Generate and attach weapons — Have the agent create a weapon with gripforge_generate_weapon, then bind it to a character's hand using gripforge_attach with style and hand parameters.
Retarget animations onto characters — Direct your assistant to pull a clip pack and retarget it onto your rig with gripforge_retarget and gripforge_animate.
Plan and dress a map — Ask the agent to greybox a compound layout with gripforge_map_plan, then populate it with props via gripforge_map_props.
Deploy and monitor game servers — Instruct your assistant to spin up a dedicated server with gripforge_server_deploy and pull logs or metrics using gripforge_server_logs and gripforge_server_metrics.
Prepare seamless textures and shaders — Have the agent make a texture tileable with gripforge_make_seamless or pull engine-ready shaders via gripforge_shader_pull.

Hosted MCP Server

npx add-mcp 'https://gripforge.ai/mcp'

Installs into Claude Code, Codex, Cursor and more

Documentation

MCP

What the agent can call

Point Claude Code, Cursor or Grok at gripforge.ai/mcp. Same locker as the Studio. 60 tools.

Library

Find a look in the locker, then push and pull GLBs into the repo.

Game Kits

Modular gameplay kits: search, install, configure, then play in the browser.

gripforge_gamekit_search
gripforge_gamekit_get
gripforge_gamekit_install
gripforge_gamekit_remove
gripforge_gamekit_configure
gripforge_gamekit_dependencies
gripforge_gamekit_update
gripforge_gamekit_deliver
gripforge_game_capabilities
gripforge_game_project
gripforge_game_play_url

Generate

Characters, weapons, bosses, HUD and capes — into Library.

gripforge_generate_character
gripforge_generate_weapon
gripforge_boss
gripforge_concept_correct
gripforge_cape
gripforge_hud
gripforge_hud_bar

Attach

Put the weapon in the hand. Loadouts, rest pose, hitboxes.

gripforge_attach
gripforge_loadout
gripforge_rest_pose
gripforge_hitbox
gripforge_vehicle_orient
gripforge_formats

Animation

Retarget a clip pack onto the character.

gripforge_animate
gripforge_retarget

Map

Greybox a compound, dress it, plan a level.

gripforge_map_plan
gripforge_map_props
gripforge_map_wires
gripforge_map_look
gripforge_map_reconstruct
gripforge_map_refs
gripforge_level

Server

Dedicated servers (deploy, logs, metrics) plus listen-server match/net kits.

gripforge_server_list
gripforge_server_deploy
gripforge_server_restart
gripforge_server_logs
gripforge_server_metrics
gripforge_players_list
gripforge_match_kit
gripforge_net_kit

Textures & shaders

Seamless tiles and engine-ready shader pull.

gripforge_texture_prep
gripforge_make_seamless
gripforge_shaders
gripforge_shader_pull

claude mcp add --transport http gripforge https://gripforge.ai/mcp --header "x-api-key: gf_..." -s local

Lands in the engines you ship with

Surfaces

One engine, three doors

Visual

Studio

Open a studio: attach a weapon, kit a character, tile a texture, build terrain, greybox a map. Same Library, same engines.

API

One multipart POST. Wire it into a batch job or a CI step that re-binds a whole prop set.

curl -X POST localhost:3100/api/v1/attach \
  -F character=@hero.glb \
  -F prop=@sword.glb \
  -F style=melee

→ { bind, confidence, exports }

MCP

Point Claude Code, Cursor or Grok at gripforge.ai/mcp. The agent calls attach, Library, terrain, map — no extra UI.

gripforge_attach
  character_path: ./hero.glb
  prop_path:      ./sword.glb
  style:          melee
  hand:           right

Install the server

Grip

Any rig, one grip

Source	Resolves to
mixamorig:RightHand	R_Hand
hand_r	R_Hand
RightHand	R_Hand
rHand	R_Hand
mixamorig:LeftHand	L_Hand
LeftHand	L_Hand

Unlisted names fall through to fuzzy matching, then to an optional AI pass for skeletons that follow no convention at all.

Style	Grip rule	Body ratio
melee	blade across the fist	0.38
gun	barrel along the fingers	0.18
shield	face on the palm	0.24
staff	shaft through the grip	0.85

Size is measured against the character, not the world, so the same sword reads right on a child model and on an ogre. Style also sets the finger curl, so a trigger finger stays straight on a gun and wraps on a sword.

Output

Paste it where you work

Three.js bone.add(prop)

Unity BoneAttach.cs

Godot BoneAttachment3D

bind.json engine agnostic

Every surface returns the same bind, so a prop attached in Studio and one attached by an agent land in the same place. Unreal sockets read straight off bind.json.

On a rig with finger bones, the bind also carries a grip pose that closes the hand on the handle. Many auto-rigs give one bone per hand, so there is nothing to close there. GripForge reports which one you have as handRig rather than guessing.

Pricing

Per attach, not per seat

Free

15 Studio attaches / month
API & MCP: 3 trial / month
200 MB Library

€0 / mo

15 credits

€4.99 once

15 attaches — never expire
API & MCP unlocked
200 MB Library

30 credits

€9.99 once

30 attaches — never expire
API & MCP unlocked
200 MB Library

100 credits

€29 once

100 attaches — never expire
API & MCP unlocked
No watermark · AI refine
2 GB Library

500 credits

€79 once

500 attaches — never expire
API & MCP unlocked
No watermark · AI refine
2 GB Library

1 500 credits

€199 once

1 500 attaches — never expire
API & MCP · priority queue
Batch-friendly
20 GB Library

FAQ

Common questions

What is GripForge?

A suite of studios and an MCP server so an AI agent (Claude Code, Cursor, Grok) can finish game assets: attach weapons to characters, prep textures, build terrain and maps, and keep everything in a Library engines can load.

How do I use GripForge with Claude Code?

Point Claude Code at gripforge.ai/mcp with your API key, or run npx @gripforgeai/mcp. The agent can then call attach, Library, terrain, map and texture tools without opening the Studio.

Which game engines does GripForge support?

Engine-ready GLB plus snippets for Unity (BoneAttach), Godot (BoneAttachment3D), Unreal sockets and Three.js.

Do I need a subscription?

No. Free Studio tier, credit packs from €4.99 that never expire, and optional Indie (€29/mo) or Studio (€99/mo) plans.