Get LibriVox Audiobook Details

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

Annotations already indicate read-only, non-destructive, idempotent behavior. The description adds value by detailing the return content (chapter-level MP3 URLs, playtimes, metadata) and notes 'LibriVox public domain'. While no contradictions, the description could mention rate limits or data freshness but overall is adequate.

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

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

The description is two sentences long, immediately front-loading critical information (full details, content included). Every word earns its place; no extraneous text.

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

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

For a single-parameter tool with output schema and thorough annotations, the description sufficiently explains what the tool does, what it returns, and how to use it. No missing elements given the tool's simplicity.

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

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

The schema description for 'book_id' already explains its purpose (integer ID, use search first, returns chapter list). The tool description repeats this information without adding new semantics. With 100% schema coverage, the baseline of 3 is appropriate.

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

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

The description clearly states the tool's purpose: retrieve full audiobook details by LibriVox ID, including specific content like MP3 URLs, playtimes, authors, and metadata. It distinguishes itself from the sibling tool 'books.librivox.search' by focusing on details rather than search.

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

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

The description explicitly advises using 'librivox.search first to discover IDs', guiding appropriate usage before invoking this tool. This provides clear context for when to use it versus related tools.

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