ClassCraftMCP (yangisu/ClassCraftMCP) is an MCP server listed on the M8ven Trust Index. M8ven graded this before, but the code is no longer public at the location we read it, so we cannot re-check it. No publisher has claimed this listing.

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ClassCraftMCP

An MCP server for creating and validating lesson plans based on the 2022 revised Korean middle school math curriculum, providing context, validation, and rendering tools.

→ yangisu/ClassCraftMCP· listed on glama

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Who stands behind it

yangisu

Source: Glama

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Install from

Glamanot scored here

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
🚨
Known vulnerabilities in dependencies: 1 critical
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
// known CVEs in dependencies1 critical1 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

criticalvitest@3.2.4GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

lowexpress@4.19.2GHSA-qw6h-vgh9-j6wx

express vulnerable to XSS via response.redirect()

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configHOSTPlayMCP in KC의 Git 소스 빌드 방식은 이 저장소 루트의 Dockerfile을 사용합니다. 컨테이너는 =0.0.0.0, 기본 PORT=3000에서 실행되며 data/curriculum 준비 상태를 /health로 확인합니다.
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployPORT
// quality suggestions

All four hints declared on every tool

6/6 tools missing one or more hints — prepare_lesson_plan_context (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); validate_lesson_plan (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); render_lesson_plan (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +3 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tool inputs are validated

Only 0/6 tool handlers declare input schemas (0%)

Declare an inputSchema with zod/joi/yup on every tool definition.

Tool handlers catch errors

Only 2/6 tool handlers wrap calls in try/catch (33%)

Wrap each tool handler body in try/catch and return a structured error response.

License file

No license file

Add a LICENSE file (MIT, Apache-2.0, etc.).

Tool test coverage

4/6 tools referenced in tests (67%)

Write tests that reference each tool by name so every tool has at least one test.

Dev dependencies

1 critical/high in dev-only deps (does not ship to users)

Upgrade dev dependencies when convenient.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 6 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
[![M8ven Score](https://m8ven.ai/badge/mcp/yangisu/classcraftmcp)](https://m8ven.ai/mcp/yangisu/classcraftmcp)
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commit: f74cffc02893e42c9884311087796fb47cf47af2
code hash: eb389804f2c65bf726571489deb3880c9f625fbd35a723864fbbda85d137de0e
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