MCP-Server
CodeCraft
io.github.TanerTalas/codecraft
Was dieses MCP kann
Validates Minecraft Bedrock behavior and resource pack schemas, scripts, commands, identifiers, and complete pack structures.
Funktionen
Tools
9
Tools
check_feasibility
Can Bedrock do this
Checks whether a user request can be built with a behavior pack and the @minecraft/server API. If it is blocked, returns why, the evidence behind that rule, and a workable alternative. Call this BEFORE writing any code or JSON: input simulation, file system access and network access do not exist in the Bedrock scripting API, and those are the most commonly hallucinated APIs.
Nur Lesen
Eingabeschema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['request'], 'properties': {'request': {'type': 'string', 'minLength': 1, 'description': 'The user request in their own words. Any language is accepted.'}}}
get_schema
Schema summary for a document type
Summarises the schema of a Bedrock document type: required fields, valid format_version values, and the name, type and description of every field on that node. It does not return the raw schema — that is far too large. When a node has many fields the summary narrows and says what was shortened in the truncated field; use path to descend into a child node for full detail. Call this before writing a file to learn which fields are required and what format_version must be.
Nur Lesen
Eingabeschema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['type'], 'properties': {'path': {'type': 'string', 'description': 'Path to descend into the schema, separated by "/". For example "minecraft:entity" or "minecraft:entity/components/minecraft:health". Omit it to get the root summary. An unresolvable path returns an error that lists the valid fields on that node.'}, 'type': {'type': 'string', 'minLength': 1, 'description': 'Document type, e.g. "behavior/blocks", "behavior/entities", "behavior/spawn_rules". The full list is in the get_version_info output.'}, 'version': {'type': 'string', 'description': 'Game version under data/, e.g. 1.26.40 or 1.26.40.5. Defaults to the newest available version. Marketing numbers (26.40) are rejected.'}}}
get_version_info
Bedrock version and schema context
Returns which version number belongs where for this game version: min_engine_version (a three-part array), @minecraft/server module versions, the valid format_version values for every document type, and the list of recognised document types. format_version is an axis of its own and is unrelated to the game version. Call this before writing any behavior pack file.
Nur Lesen
Eingabeschema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'version': {'type': 'string', 'description': 'Game version under data/, e.g. 1.26.40 or 1.26.40.5. Defaults to the newest available version. Marketing numbers (26.40) are rejected.'}}}
lookup_id
Verify a vanilla identifier
Tells you whether a minecraft: identifier actually exists in this version and what kind it is (block, item, entity, biome, effect, enchantment, feature, dimension, camera preset, particle, potion). For a block it also returns the valid block states and the values they accept. An identifier without a namespace is treated as minecraft:. Verify every identifier here before writing it — an identifier that does not exist fails silently in the game.
Nur Lesen
Eingabeschema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['id'], 'properties': {'id': {'type': 'string', 'minLength': 1, 'description': 'Identifier, e.g. "minecraft:blaze" or just "blaze" without the namespace.'}, 'version': {'type': 'string', 'description': 'Game version under data/, e.g. 1.26.40 or 1.26.40.5. Defaults to the newest available version. Marketing numbers (26.40) are rejected.'}}}
review_pack
Validate a whole pack
Validates every file of a behavior or resource pack in one call: it applies the right validator to each file (JSON schema, script compilation, command syntax) and then runs the checks a schema structurally cannot do — identifier consistency, filename rules, manifest module type, texture keys, component names, Molang queries and loot/trade table paths. This is the LAST step before handing a pack to the user, and it is both faster and broader than validating each file separately.
Nur Lesen
Eingabeschema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['files'], 'properties': {'files': {'type': 'array', 'items': {'type': 'object', 'required': ['path', 'content'], 'properties': {'path': {'type': 'string', 'minLength': 1, 'description': 'Path inside the pack, e.g. "behavior_packs/ruby/blocks/ruby_ore.json".'}, 'content': {'type': 'string', 'description': 'The complete file content.'}}}, 'minItems': 1, 'description': 'The files in the pack. Include the manifest — several checks depend on it.'}, 'version': {'type': 'string', 'description': 'Game version under data/, e.g. 1.26.40 or 1.26.40.5. Defaults to the newest available version. Marketing numbers (26.40) are rejected.'}}}
validate_command
Validate a Bedrock command
Validates a single Bedrock command line against the official command index: does the command exist, does the argument count match, are the selectors and block states valid. When no overload matches it returns the valid usages, and it tells you whether the command requires cheats. Run every command through this before giving it to the user. `execute ... run <command>` chains are resolved: the command after run is validated too, including nested execute.
Nur Lesen
Eingabeschema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['line'], 'properties': {'line': {'type': 'string', 'minLength': 1, 'description': 'A single command line, e.g. "/give @p diamond 1". The leading / is optional.'}, 'version': {'type': 'string', 'description': 'Game version under data/, e.g. 1.26.40 or 1.26.40.5. Defaults to the newest available version. Marketing numbers (26.40) are rejected.'}}}
validate_json
Validate Bedrock JSON against its schema
Validates a behavior or resource pack JSON file against the official schema and returns the JSON pointer, the violated rule and a readable message for every error. Unexpected property names and the valid enum values are included in the message. Run every JSON file you produce through this before handing it to the user.
Nur Lesen
Eingabeschema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['content', 'type'], 'properties': {'type': {'type': 'string', 'minLength': 1, 'description': 'Document type. A canonical name ("behavior/blocks/blocks"), a short form ("behavior/blocks") or a file path ("BP/blocks/ruby.json") are all accepted. The list of recognised types is in the get_version_info output.'}, 'content': {'type': 'string', 'minLength': 1, 'description': 'The complete file content as text. Parse errors are reported too.'}, 'version': {'type': 'string', 'description': 'Game version under data/, e.g. 1.26.40 or 1.26.40.5. Defaults to the newest available version. Marketing numbers (26.40) are rejected.'}}}
validate_python
Validate an automation script
Validates a Python automation script that runs OUTSIDE the game, on three axes: Python syntax (using the real interpreter), Minecraft commands embedded in the script (against the official command index), and the shape of the /connect WebSocket message envelope. For behavior pack scripts use validate_script instead — Python does not run inside a pack. The embedded command check is the most valuable one: a command written from memory can look syntactically fine and still do nothing in the game. Only strings starting with / are treated as commands. If syntax could not be checked, syntaxChecked is false in the result; ok:true alone does not mean the syntax is valid.
Nur Lesen
Eingabeschema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['code'], 'properties': {'code': {'type': 'string', 'minLength': 1, 'description': 'The complete Python script content.'}, 'version': {'type': 'string', 'description': 'Game version under data/, e.g. 1.26.40 or 1.26.40.5. Defaults to the newest available version. Marketing numbers (26.40) are rejected.'}}}
validate_script
Compile an @minecraft/server script
Compiles a behavior pack script with the real TypeScript compiler against the actual @minecraft/server type definitions for that version. Returns diagnostics with line, column, TS error code and message, and reports which module versions it compiled against. Catch non-existent APIs and calls removed in later versions here — Bedrock scripting APIs written from memory are the most common source of output that fails silently.
Nur Lesen
Eingabeschema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['code'], 'properties': {'code': {'type': 'string', 'minLength': 1, 'description': 'The complete script content. JavaScript or TypeScript.'}, 'channel': {'enum': ['stable', 'beta'], 'type': 'string', 'description': 'Module channel. Defaults to stable. If beta is requested but a module has no beta release it falls back to stable — the modules field in the result says which version each module was compiled against.'}, 'version': {'type': 'string', 'description': 'Game version under data/, e.g. 1.26.40 or 1.26.40.5. Defaults to the newest available version. Marketing numbers (26.40) are rejected.'}}}
Verlauf
Letzte Tool-Änderungen
Hinzugefügt
review_pack
17. September 2026 12:52
Hinzugefügt
validate_python
17. September 2026 12:52
Hinzugefügt
validate_script
17. September 2026 12:52
Hinzugefügt
validate_command
17. September 2026 12:52
Hinzugefügt
validate_json
17. September 2026 12:52
Hinzugefügt
lookup_id
17. September 2026 12:52
Hinzugefügt
get_schema
17. September 2026 12:52
Hinzugefügt
get_version_info
17. September 2026 12:52
Hinzugefügt
check_feasibility
17. September 2026 12:52
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