Lyceum (matthewp/lyceum) is an MCP server listed on the M8ven Trust Index. M8ven has not graded it: there is no public source to read and no endpoint we can reach, so there is nothing for us to inspect. No publisher has claimed this listing.
An MCP server that enables querying and managing Calibre libraries via chat by interacting with the Calibre content server over HTTP. It allows users to search for books, update metadata, manage authors and tags, and handle book file uploads or conversions.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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matthewp
Source: Glama
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Install from
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AUTH_PASSWORDYes — Password for the OAuth authorization pageBASE_URLNo http://localhost:3000 Public URL of this server (used for OAuth redirects and signed URLs)CALIBRE_LIBRARY_IDCALIBRE_PASSWORDCALIBRE_SERVER_URLCALIBRE_USERNAMECONVERTER_API_KEYNo — Bearer token for the converter APICONVERTER_URLNo — URL of an ebook converter API for format conversionDATA_DIRNo /data Directory for the database and book filesPORTTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
30/30 tools missing one or more hints — list_books (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_book (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); search_books (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +27 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
23/30 tool handlers declare input schemas (77%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool handlers catch errors
15/30 tool handlers wrap calls in try/catch (50%)
Wrap each tool handler body in try/catch and return a structured error response.
Tool test coverage
Only 0/30 tools referenced in tests (0%)
Write tests that reference each tool by name so every tool has at least one test.
Tests pass
npm test failed — tests do not pass
Make sure npm test runs cleanly. Common cause: missing build step or missing env vars.
Shell command execution
5 child_process calls — runs shell commands
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Dependency freshness
2/14 production deps stale: epub2@2023-09-20 (2.7y), xml2js@2024-05-31 (2y)
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