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vgnshiyer

apple-books-mcp

by vgnshiyer

Search books by title

search_books_by_title
Read-only

Search your Apple Books collection by title to find matching books. Returns ID, title, and author for each result.

Instructions

Search for books by title (substring match, ignoring case, accents and quote/dash style). Output is one row per match: [id] title by author. Use describe_book(id) for details, and search_books to match authors too.

Args: title: The title to search for. limit: Max books to return (1–500, default 200). offset: Books to skip, for paging; a footer names the next offset when there are more.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNo
titleYes
offsetNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv0.9.0
    • addedInput schema / properties / limit
      Added value: +{
      +  "default": 200,
      +  "title": "Limit",
      +  "type": "integer"
      +}
    • addedInput schema / properties / offset
      Added value: +{
      +  "default": 0,
      +  "title": "Offset",
      +  "type": "integer"
      +}
  2. First observedv0.8.4

TDQS

A4.8/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true and openWorldHint=false, but the description adds non-obvious behavior: substring matching that ignores case, accents, and quote/dash style; one-row-per-match output format; and paging via a footer that names the next offset. These details meaningfully exceed the annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loads purpose, match semantics, and output format before alternatives and parameters. No redundant or filler sentences; the Args block is compact.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Complete for a read-only search tool with no output schema: return row format, match rules, paging, and alternative tools are all specified. Nothing an agent needs to call correctly is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description carries the full burden. It documents all three parameters: title (what to search), limit (range 1–500, default 200), and offset (paging behavior with footer guidance). The added range and paging semantics are valuable beyond the bare schema types.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Starts with a specific verb and resource ('Search for books by title'), details the matching semantics (substring, case/accent/quote-dash insensitive), and names the output shape. It distinguishes itself from the sibling search_books by noting that tool also matches authors.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly directs to describe_book(id) for details and search_books for author matching, giving clear alternative tools. However, it does not state when not to use this tool (e.g., for genre or status filtering) or provide broader when-to-use beyond title lookup.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.