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tanush-yadav

YouTube Transcript MCP Server

by tanush-yadav

get_transcript_with_metadata

Retrieve a YouTube transcript with detailed metadata including duration and word count by providing a video URL or ID.

Instructions

Extract transcript with detailed metadata including duration and word count

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlYesYouTube video URL or video ID

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

A3.8/5.0
Behavior3/5

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

No annotations are provided, so the description carries the burden of behavioral disclosure. 'Extract' indicates a read operation with no apparent side effects, and the description states what the result contains. However, it does not mention return format, authentication requirements, rate limits, or error behavior, though these are less critical for a simple retrieval tool.

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?

The description is a single front-loaded sentence with no filler. It names the action, the resource, and the key distinguishing output details, so every word earns its place.

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?

For a one-parameter retrieval tool with no output schema, the description is largely complete: the required input is fully defined in the schema, and the return value is summarized with concrete metadata examples. It does not enumerate all metadata fields or specify the output format, but the tool's simplicity makes this a minor gap rather than a significant one.

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?

The schema covers 100% of the single parameter with a clear description ('YouTube video URL or video ID'), so the baseline is 3. The tool description adds no additional parameter-level meaning beyond what the schema already provides.

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?

The description uses a specific verb ('Extract') and resource ('transcript') and adds the distinguishing detail 'detailed metadata including duration and word count.' This clearly separates it from the sibling tool get_transcript, which presumably returns only a plain transcript, and from save_transcript, which implies persistence.

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

Usage Guidelines3/5

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

The description implies this tool is appropriate when a transcript plus metadata such as duration and word count is needed, but it never explicitly states when to prefer it over get_transcript or save_transcript. The agent must infer the distinction from the tool name and the word 'metadata.'

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