batch_extract_youtube_transcripts

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

Annotation declares readOnlyHint=true, implying no state changes, but description and schema describe writing .md files and index.json to disk, which modifies the filesystem. This contradiction is severe, and per rubric, score is 1.

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?

Two sentences front-load the purpose and state key constraints (max URLs, output_path requirement) without extraneous information. Every word is necessary and no fluff.

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?

Despite the annotation contradiction, the description covers purpose, capacity, and persistence requirement. The schema fills in parameter details, and output schema exists. Missing some behavioral details like error handling for failed items (mentioned only in schema), but overall sufficient for invocation given the rich schema.

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?

Schema description coverage is 100%, and the parameter description in the schema already details all keys (urls, languages, output_path, etc.). The tool description adds minimal value beyond what the schema provides, so baseline 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?

Description clearly states the tool extracts transcripts from multiple YouTube videos, distinguishing it from the singular counterpart extract_youtube_transcript. It specifies a max of 3 URLs per call and mentions persistence, which is specific and actionable.

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?

Description provides constraints (max 3 URLs, need output_path) but does not explicitly guide when to use this batch tool versus the singular extract_youtube_transcript or other sibling tools. Usage context is implied but exclusions and alternatives are not stated.

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