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Books Like This

A book's details and any film or series made from it

get_book
Read-onlyIdempotent

A book's details and any film or series made from it. Use for "tell me about Project Hail Mary", "is The Name of the Wind being made into a film?", "how long is Dune?". Misspellings are fine. If screen_checked is false, the film and TV check could not run just now, so the film and TV status is unknown

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
titleYesThe book's title, 2 to 120 characters. Add author for very short or common titles.
authorNoThe author's name, to pin down the right book or list their books.
countryNoFor buy links: US, GB, IE, CA, AU. Default from the request.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A3.9/5.0
Behavior4/5

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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so the bar is lower, and the description still adds real behavior: the screen_checked=false caveat explains a partial/unknown-result state that no annotation conveys. 'Misspellings are fine' also discloses fuzzy-match tolerance. It omits how results are shaped, but that is minor given 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.

Conciseness4/5

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

The capability statement is front-loaded in the first sentence, followed by compact examples and the one conditional caveat. The example list is slightly longer than strictly necessary but each example maps to a distinct capability (details, adaptation status, length).

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

Completeness4/5

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

With no output schema, the description carries the return-value burden and does cover the main payload (book details, film/series status) plus the degraded-result case via screen_checked. Missing is any mention of how contradictions or no-match cases are surfaced, but for a single-entity lookup this is close to complete.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already documents title length limits, the author pinning use, and the country enum values for buy links. The description adds only marginal semantics ('Misspellings are fine' for title, and no guidance on country defaults), so the baseline 3 applies.

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

Purpose4/5

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

The first sentence names a concrete verb+resource (book details) plus the distinctive extra (film/TV adaptation status), which is more specific than a generic 'get' tool. It does not explicitly differentiate itself from find_similar_books or get_author_books, so an agent must infer it is the single-book detail lookup from the name/title alone.

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?

Three concrete example utterances ('tell me about Project Hail Mary', 'is The Name of the Wind being made into a film?', 'how long is Dune?') make the intended use case unambiguous and cover both queries the tool serves. There is no explicit statement of when NOT to use it or when to prefer the two sibling tools, which keeps it short of a 5.

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

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