ForgeFlower vs Minecraft Development MCP Server
ForgeFlower
github.comMinecraft Development MCP Server
github.comSide by side
| Figure | ForgeFlower | Minecraft Development MCP Server |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | Yes | Yes |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 1 |
| Spec score · Minecraft Mod Development Tools | 8.3 (#8) | 8.6 (#4) |
| Integrations | The README describes ForgeFlower as modifications to FernFlower and links to the main FernFlower repository. | The README documents setup for Claude Desktop and Claude Code, and also describes an HTTP transport for clients or editors. |
| License | The ForgeFlower repository lists an Apache-2.0 license. | The repository identifies its license as MIT. |
| Purpose | ForgeFlower is Forge’s modifications to FernFlower that fix various bugs and inconsistencies. | Minecraft Dev MCP gives AI assistants access to tools for decompiling, remapping, searching, and analyzing Minecraft source code. |
| Security | The repository page displays a Security and quality section with 0 shown. | The README says loopback binding at 127.0.0.1 enables DNS-rebinding protection; binding to a non-loopback host disables that protection and should be limited to a trusted network, ideally behind a reverse proxy or authentication. |
Plans
In their own words
ForgeFlower
ForgeFlower has no write-up on Specifiction yet; its figures are above.
Minecraft Development MCP Server
Minecraft Development MCP Server gives AI assistants and development tools ways to inspect Minecraft Java source and mods. It can download, decompile and remap versions on first use, then cache the results for searching and analysis. Its 21 tools cover source code, mappings and registry data, validation, and mod analysis. Developers can validate Mixin code and loader-specific access rules, inspect mod JAR metadata and dependencies, and compare versions at class and AST levels to identify changes. Mapping namespaces include Yarn, Mojmap, Intermediary and obfuscated names. Yarn is available for Minecraft 1.14–1.21.11; versions 26.1 and later support Mojmap, while Yarn is unavailable. Setup is documented for Claude Desktop and Claude Code, with HTTP transport and a standalone CLI also available. Installation options include global npm, npx or a source build. It is free and MIT-licensed, and runs on Windows, macOS and Linux/WSL. Node.js 18 or newer is required, and Java 17 or newer is needed for decompilation and remapping. Its local cache uses about 400–500 MB per Minecraft version.