CodeCraft MCP server
online · 100% uptimeio.github.TanerTalas/codecraft·v0.1.0Checks whether generated Minecraft Bedrock content will actually load. Nine read-only tools.
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If you have run it, two minutes of your experience saves the next person an afternoon.
CodeCraft tools (9)
write = sends, deletes, buys or postscheck_feasibilityFreeChecks 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.
get_schemaFreeSummarises 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.
get_version_infoFreeReturns 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.
lookup_idFreeTells 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.
review_packFreeValidates 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.
validate_commandFreeValidates 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.
validate_jsonFreeValidates 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.
validate_pythonFreeValidates 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.
validate_scriptFreeCompiles 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.
Public scan report
scanner v0.1.10 · 2026-10-16 · same rubric, same numbers if you re-run it
- –Code scanremote-only server, no package to scann/a
- Live reliabilityremote reachable in 672ms20/20
- Tool poisoning9 tool descriptions checked15/15
- Auth qualityopen endpoint, read-only tools10/15
- Maintenancelast push 41 days ago12/15
- Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
How CodeCraft compares
Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.
- Safety score
- 87/100
- higher than 73% of 48,243 servers
- Tools
- 9
- the typical server has 7
- Tools that change things
- 0%
- typical: 0%. Fewer write tools means less an agent can break
- Uptime
- 100%
- of our recent checks; the typical remote server answers 100%
- Response time
- 233 ms
- faster than 61% of 30,027 servers
What its tools let an agent do: 9 read
Install CodeCraft in Claude Code, Cursor or VS Code
claude mcp add --transport http codecraft https://codecraft-ashy-seven.vercel.app/mcp
What the publisher says
From the CodeCraft repository's README, as published. We do not edit it. Read it on GitHub
CodeCraft
A validation and data-lookup MCP server for Minecraft Bedrock.
You bring the model. CodeCraft does not generate anything — it measures whether what was generated is actually going to work.
Usage site · setup, tool reference, and where validation ends
Why it exists
In Bedrock, a field name recalled slightly wrong produces output that silently does not work. No error message, no red line. Everything looks fine until the pack is loaded into the game.
A real example — both lines pass the schema, one of them never loads:
"modules": [
- { "type": "javascript", "entry": "scripts/main.js" }
+ { "type": "script", "language": "javascript", "entry": "scripts/main.js" }
]With the top line the pack did not appear in the behavior pack list at all. It did not even raise an error. The javascript type is left over from before 1.16 and the schemas keep it for backward compatibility, but it does not load with @minecraft/server 2.x. The schema says "valid type", the game says "I cannot load this type".
That one line was measured in the real game (30-08-2026). There are seven more classes like it, all in docs/VALIDATION-LIMITS.md with ContentLog evidence.
CodeCraft closes that gap: values are read from version-pinned data, and output is validated against the official schema and against a real tsc.
Nine tools
All nine are read-only. The server writes nothing, sends data nowhere, and keeps no user data.
The order is not alphabetical, it is the order of use — and tools/list preserves it.
Setup
In Claude, open Customize → Connectors (not Settings; older guides point there, and there is no custom connector field on that screen):
- Customize → Connectors → add a custom connector
- Paste the endpoint address
- Save
Three things you should see once it connects — a single "it worked" is not enough:
Shortened. The full README is on GitHub.
Nothing above is checked by us. What we check is on the safety report.
CodeCraft: common questions
- Is CodeCraft MCP server safe?
- Yes, by our scan: it is graded A (87/100). Read the CodeCraft safety report
- How do I install CodeCraft?
- It runs remotely at codecraft-ashy-seven.vercel.app. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
- Does CodeCraft need an API key?
- Not as far as the registry entry and our scan can tell: no credentials are declared or required.
- Is CodeCraft maintained?
- The last commit was 61 days ago (2026-09-05). The latest release is v0.1.0.
- Is CodeCraft up?
- 100% of our last 28 checks got an answer. We check remote servers about four times a day.
- What can I use instead of CodeCraft?
- Servers from other publishers that do the same job: Contact Affordance MCP server and Business Contact Finder MCP server.
- How does CodeCraft compare with other MCP servers?
- safety score 87/100 (higher than 73% of 48,243 servers); tools 9 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.
Alternatives to CodeCraft
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- Business Contact FinderCheck how to contact a business website, and whether that contact path actually works.not reviewedEstablishedA