// MCP TOOL REFERENCE

MINECRAFT DEV MCP TOOLS

20 tools from the Minecraft Dev MCP MCP Server, categorised by risk level.

// ALL 20 MINECRAFT DEV MCP TOOLS

READ 15 tools

Read analyze_mixin Analyze and validate Mixin code against Minecraft source. Parses @Mixin annotations, validates injection ta... Read analyze_mod_jar Analyze a third-party mod JAR file to extract metadata, dependencies, entry points, mixins, and class infor... Read compare_versions Compare two Minecraft versions to find differences in classes or registry data. Useful for tracking breakin... Read compare_versions_detailed Compare two Minecraft versions with detailed AST-level analysis. Shows method signature changes, field chan... Read find_mapping Look up a symbol (class, method, or field) mapping between different mapping systems. Translates between of... Read get_documentation Get documentation for a Minecraft class or concept. Links to Fabric Wiki, Minecraft Wiki, and provides usag... Read get_minecraft_source Get decompiled source code for a specific Minecraft class. This will automatically download, remap, and dec... Read get_registry_data Get Minecraft registry data (blocks, items, entities, etc.). This runs the data generator if not cached. Read list_minecraft_versions List available and cached Minecraft versions. Shows which versions are available for download and which are... Read search_documentation Search for documentation across all known Minecraft/Fabric topics. Read search_indexed Fast full-text search using pre-built index. Much faster than search_minecraft_code for large queries. Requ... Read search_minecraft_code Search for classes, methods, fields, or content in decompiled Minecraft source code. Supports regex patterns. Read search_mod_code Search for classes, methods, fields, or content in decompiled mod source code. Supports regex patterns. Use... Read search_mod_indexed Fast full-text search using pre-built mod index. Much faster than search_mod_code for large queries. Requir... Read validate_access_widener Parse and validate Fabric Access Widener files against Minecraft source. Checks that targets exist and sugg...

WRITE 2 tools

Write index_minecraft_version Create a full-text search index for decompiled Minecraft source. Enables fast searching with search_indexed... Write index_mod Create a full-text search index for decompiled mod source code. Enables fast searching with search_mod_inde...

EXECUTE 3 tools

Execute decompile_minecraft_version Decompile an entire Minecraft version. By default downloads the client JAR from Mojang, remaps it to the ch... Execute decompile_mod_jar Decompile a mod JAR file to readable Java source code. The JAR can be either the original mod JAR (with int... Execute remap_mod_jar Remap a Fabric mod JAR from intermediary mappings to human-readable mappings. Useful for reading mod source...

// FAQ

How many tools does the Minecraft Dev MCP MCP server have? +

The Minecraft Dev MCP MCP server exposes 20 tools across 3 categories: Read, Write, Execute.

How do I enforce policies on Minecraft Dev MCP tools? +

Route the Minecraft Dev MCP server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard; they are enforced on every call before it reaches the server.

What risk categories do Minecraft Dev MCP tools fall into? +

Minecraft Dev MCP tools are categorised as Read (15), Write (2), Execute (3). Each category has a recommended default policy.

Enforce policy on every Minecraft Dev MCP tool call.

Start from Minecraft Dev MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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