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YouTube MCP Server Enhanced

YouTube MCP Server Enhanced

by aranej
OverviewSchemaSourceRelated ServersDiscussionsAdmin
JavaScript
Remote

Get Playlist Items

playlists_getPlaylistItems
Read-onlyIdempotent

Retrieve videos from a specific YouTube playlist by providing the playlist ID, with optional control over the number of results returned.

Instructions

Get videos in a YouTube playlist

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "playlistId": "<playlistId>"
    },
    "name": "playlists_getPlaylistItems"
  }
}

Input Schema

NameRequiredDescriptionDefault
playlistIdYesThe YouTube playlist ID
maxResultsNoMaximum number of results to return

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

B3.2/5.0
Behavior3/5

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

Annotations already declare readOnlyHint and idempotentHint, so the tool's safety is clear. The description adds no additional behavioral context (e.g., pagination, return format, ordering). It is adequate but does not exceed the structured data.

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 description is a single short sentence, front-loaded with the core action. No wasted words. However, it could afford a bit more detail without losing conciseness.

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

Completeness3/5

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

For a simple read tool with no output schema, the description is minimal but functional. It lacks details about what video information is returned (snippet, contentDetails?) and pagination behavior. Adequate for basic use but not comprehensive.

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 explains both parameters. The description adds no extra meaning beyond what is in the schema. Baseline score of 3 is appropriate.

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 description clearly states the action ('Get') and resource ('videos in a YouTube playlist'), distinguishing it from siblings like playlists_getPlaylist (playlist metadata) and videos_getVideo (single video). It is concise and unambiguous.

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

Usage Guidelines2/5

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

No guidance is provided on when to use this tool versus alternatives such as videos_searchVideos or playlists_getPlaylist. The description does not mention context, prerequisites, or exclusion criteria.

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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