Shelfclub
app-shelfclub-books declares 6 capabilities across 6 tools, with 1 critical issue.
Issues
6 of 6 tools declare no way for the customer to switch them off once granted. This applies to every tool because MCP has no field in which to declare a revocation mechanism; the product may provide one outside MCP that a manifest cannot show.
6 of 6 tools declare no expiry. This applies to every tool because MCP has no field in which to declare an expiry; the product may provide one outside MCP that a manifest cannot show.
6 of 6 tools declare no record of their actions that the customer can read. This applies to every tool because MCP has no field in which to declare an audit requirement; the product may provide one outside MCP that a manifest cannot show.
6 tools can read data and declare no limit.
Declared capabilities
| Tool | Read as | Basis |
|---|---|---|
search_books | read |
declared |
find_books_by_mood | read |
declared |
get_book | read |
declared |
get_similar_books | read |
declared |
get_trending_books | read |
declared |
get_author | read |
declared |
Record history
| Recorded | Exposure | Source |
|---|---|---|
| 2026-10-16 | 11 | tools/list on https://mcp.shelfclub.app/mcp, published in the official MCP registry as app.shelfclub/books 0.2.0 |
| 2026-10-11 | 11 | tools/list on https://mcp.shelfclub.app/mcp, published in the official MCP registry as app.shelfclub/books 0.2.0 |
tools/list response and it will be re-scored and dated.
Corrections are published alongside the original, not in place of it.