# MifBridge

> MifBridge is an Unreal Engine editor plugin and MCP server that lets AI agents (Claude or any other MCP client) and plain HTTP clients drive the Unreal Editor and Blender through typed calls, and it reads the editor back before it reports success. It is made by Mifsopo and sold on Fab and on mifshowcase.store.

Every page marked Markdown below is also served as Markdown to a request that sends "Accept: text/markdown". The whole site in one file: https://mifshowcase.store/llms-full.txt

## Key facts (read from the site's records, as of 2026-09-17)

- Current version: 1.0.0. Latest changelog entry: v1.0.0, 2026-09-17.
- 458 typed Unreal Engine endpoints and 189 typed Blender operations; 669 MCP tools; 346 test suites.
- Unreal Engine 5.3 to 5.8: 6 versions swept live on stock editors, 249 to 252 suites each, 0 failed (2026-09-16).
- Blender 3.6.23, 4.2.17 LTS, 4.4.0, 5.0.1, 5.2.1 LTS: 96 Blender suites on each, 0 failed (2026-09-17).
- Runs on Windows (Win64). The editor API listens on 127.0.0.1:8791, loopback only, and every request carries a token in the X-Mif-Token header; the Blender add-on uses port 8792.
- Write modes are read, scratch and full. A person sets the mode in the editor; no console variable, command or endpoint lets an agent change it.
- MifBridge answers every write by reading the editor back, and refuses what the current mode does not allow, saying why.
- MifBlender, the Blender add-on, is free and MIT-licensed.
- Buy on Fab (https://www.fab.com/listings/cfca3a10-c4b4-4737-a029-3bac2703f50a) or directly at https://mifshowcase.store/store: Personal and Professional licenses, one-time payment.
- Showcase: 161 clips, each built in Unreal Engine or Blender by typed calls: https://mifshowcase.store/showcase

## Products

- [MifBridge: Unreal Engine editor automation for AI agents](https://mifshowcase.store/mifbridge): MifBridge is an Unreal Engine editor plugin and MCP server that lets AI agents and MCP clients drive the editor through typed endpoints, and reads every write back before it reports success. ([Markdown](https://mifshowcase.store/md/mifbridge.md))
- [MifBlender: Blender as a typed backend for AI agents](https://mifshowcase.store/mifblender): MifBlender is a free, MIT-licensed Blender add-on that serves typed operations for modeling, materials, rigging, lighting, Geometry Nodes, physics and rendering, driven by the same MCP server as MifBridge. ([Markdown](https://mifshowcase.store/md/mifblender.md))
- [Small Oil Rig FPS Map](https://mifshowcase.store/oilrig): A complete, playable offshore platform for Unreal Engine 5.7 and 5.8. Original assets throughout, fully dynamic lighting, navmesh built. ([Markdown](https://mifshowcase.store/md/oilrig.md))

## Documentation

- [Documentation: installation, setup and use](https://mifshowcase.store/docs): Install MifBridge, connect Claude or another MCP client, and drive Unreal Engine and Blender safely: setup, configuration, write modes and troubleshooting. ([Markdown](https://mifshowcase.store/md/docs.md))
- [Getting Started](https://mifshowcase.store/docs/getting-started): MifBridge lets an AI agent, an MCP client, or any HTTP client work inside Unreal Engine and Blender through typed calls, and it reads the editor back before it reports success. ([Markdown](https://mifshowcase.store/md/docs/getting-started.md))
- [Installation](https://mifshowcase.store/docs/installation): Three pieces, installed in this order. Each is useful on its own: the Unreal plugin alone gives you a local HTTP API, and the Blender add-on and the MCP server are both optional. ([Markdown](https://mifshowcase.store/md/docs/installation.md))
- [Install with Claude](https://mifshowcase.store/docs/install-with-claude): If you use Claude Code, it can install MifBridge for you. Open Claude Code in your Unreal project's folder and paste the prompt below. ([Markdown](https://mifshowcase.store/md/docs/install-with-claude.md))
- [Configuration](https://mifshowcase.store/docs/configuration): MifBridge is configured with environment variables. Each is read by the process that owns that piece: the Unreal editor, Blender, or the MCP server. The editor also has a few console variables. ([Markdown](https://mifshowcase.store/md/docs/configuration.md))
- [MifBridge](https://mifshowcase.store/docs/mifbridge): The MifBridge plugin runs inside the Unreal editor and serves a local HTTP API. It has one endpoint per operation, it is strict about its input, and it says exactly what it changed. ([Markdown](https://mifshowcase.store/md/docs/mifbridge.md))
- [MifBlender](https://mifshowcase.store/docs/mifblender): MifBlender is MifBridge's Blender backend: a Blender add-on that serves typed operations on a local socket, driven by the same MCP server as the Unreal side. ([Markdown](https://mifshowcase.store/md/docs/mifblender.md))
- [MCP Server](https://mifshowcase.store/docs/mcp-server): The MCP server is a small Python process that exposes both backends as tools for an MCP client: the Unreal plugin over HTTP, and the Blender add-on over its socket. ([Markdown](https://mifshowcase.store/md/docs/mcp-server.md))
- [Safety and Write Modes](https://mifshowcase.store/docs/safety-and-write-modes): MifBridge can change your project, so it has a safety gate: a write mode that decides which operations may run. A person sets it, and the agent it restrains has no way to change it. ([Markdown](https://mifshowcase.store/md/docs/safety-and-write-modes.md))
- [Cooked Projects](https://mifshowcase.store/docs/cooked-projects): MifBridge works on cooked projects, meaning games shipped as paks where the editor-only data has been stripped. ([Markdown](https://mifshowcase.store/md/docs/cooked-projects.md))
- [Troubleshooting](https://mifshowcase.store/docs/troubleshooting): Most problems come down to a handful of causes that look alike from the outside. Start with python tools/verifyinstall.py from the plugin folder, because it tells them apart. ([Markdown](https://mifshowcase.store/md/docs/troubleshooting.md))

## Reference

- [API reference: Unreal Engine endpoints and Blender operations](https://mifshowcase.store/api-reference): 458 Unreal Engine endpoints and 189 Blender operations with their parameters, generated from the plugin's live registry. ([Markdown](https://mifshowcase.store/md/api-reference.md))
- [Unreal Engine 5.3 to 5.8 and Blender 3.6 to 5.2 support](https://mifshowcase.store/engines): Every Unreal Engine and Blender version MifBridge 1.0.0 was tested on, how many test suites ran on each, and what to know about each version. ([Markdown](https://mifshowcase.store/md/engines.md))
- [Unreal Engine 5.3](https://mifshowcase.store/engines/5.3): How MifBridge 1.0.0 was tested on Unreal Engine 5.3: 249 test suites on 5.3.2, 242 passed, 7 skipped, 0 failed (2026-09-16). ([Markdown](https://mifshowcase.store/md/engines/5.3.md))
- [Unreal Engine 5.4](https://mifshowcase.store/engines/5.4): How MifBridge 1.0.0 was tested on Unreal Engine 5.4: 252 test suites on 5.4.4, 242 passed, 10 skipped, 0 failed (2026-09-16). ([Markdown](https://mifshowcase.store/md/engines/5.4.md))
- [Unreal Engine 5.5](https://mifshowcase.store/engines/5.5): How MifBridge 1.0.0 was tested on Unreal Engine 5.5: 252 test suites on 5.5.4, 242 passed, 10 skipped, 0 failed (2026-09-16). ([Markdown](https://mifshowcase.store/md/engines/5.5.md))
- [Unreal Engine 5.6](https://mifshowcase.store/engines/5.6): How MifBridge 1.0.0 was tested on Unreal Engine 5.6: 252 test suites on 5.6.1, 243 passed, 9 skipped, 0 failed (2026-09-16). ([Markdown](https://mifshowcase.store/md/engines/5.6.md))
- [Unreal Engine 5.7](https://mifshowcase.store/engines/5.7): How MifBridge 1.0.0 was tested on Unreal Engine 5.7: 249 test suites on 5.7.4, 242 passed, 7 skipped, 0 failed (2026-09-16). ([Markdown](https://mifshowcase.store/md/engines/5.7.md))
- [Unreal Engine 5.8](https://mifshowcase.store/engines/5.8): How MifBridge 1.0.0 was tested on Unreal Engine 5.8: 252 test suites on 5.8.2, 243 passed, 9 skipped, 0 failed (2026-09-16). ([Markdown](https://mifshowcase.store/md/engines/5.8.md))
- [Verification record: how every number is counted](https://mifshowcase.store/verification): How every number on this site was established, and the caveats attached to each. ([Markdown](https://mifshowcase.store/md/verification.md))
- [Changelog](https://mifshowcase.store/changelog): Every MifBridge release and what actually changed in it. ([Markdown](https://mifshowcase.store/md/changelog.md))
- [FAQ: Unreal Engine and Blender automation](https://mifshowcase.store/faq): Straight answers about MifBridge: what verified means, how cooked projects are handled, and whether an AI agent can change the safety mode. ([Markdown](https://mifshowcase.store/md/faq.md))
- [Tips for driving Unreal Engine and Blender with an AI agent](https://mifshowcase.store/tips): Working patterns for driving a live Unreal or Blender editor from an agent, each one learned from a real session. ([Markdown](https://mifshowcase.store/md/tips.md))
- [Showcase: scenes built by typed calls in Unreal Engine and Blender](https://mifshowcase.store/showcase): Scenes built live by typed MifBridge calls in Unreal Engine 5 and Blender - every clip filmed or rendered from its own call log. ([Markdown](https://mifshowcase.store/md/showcase.md))

## Buying

- [Buy MifBridge](https://mifshowcase.store/store): Buy directly from Mifsopo: the Unreal Engine plugin and MCP server, with the MifBlender add-on. One-time payment, tax included.
- [MifBridge on Fab](https://www.fab.com/listings/cfca3a10-c4b4-4737-a029-3bac2703f50a): Epic's marketplace listing.
- [Terms of sale](https://mifshowcase.store/terms): What you get, the two licences, price, tax and refunds.

## Optional

- [MifBridge: Unreal Engine and Blender MCP server for AI agents](https://mifshowcase.store/): MifBridge is an Unreal Engine plugin and MCP server that lets Claude and other AI assistants work inside Unreal Engine and Blender, and checks the editor after every change to confirm it really happened. ([Markdown](https://mifshowcase.store/md/index.md))
- [Legal](https://mifshowcase.store/legal): Licensing, the third-party work these tools build on, and the trademarks.
- [Privacy](https://mifshowcase.store/privacy): No analytics, no tracking cookies and no advertising, and what the site does store.