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AfsheenMahmood

youtube-mcp

by AfsheenMahmood
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Remote

channels_searchChannels

Find YouTube channels by handle, name, or query. Filter results by subscriber count, upload dates, channel type, and ranking to target the right creators.

Instructions

Search for YouTube channels by handle, name, or query

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
orderNoSort order for results, such as relevance
queryYesChannel search query or handle
sortByNoOptional ranking mode such as relevance, indie_priority, subscribers_asc, subscribers_desc, or recent_activity
maxResultsNoMaximum number of results to return
channelTypeNoRestrict to channel type such as any or show
creatorOnlyNoOnly include channels heuristically classified as creators
maxSubscribersNoMaximum subscriber count for returned channels
minSubscribersNoMinimum subscriber count for returned channels
lastUploadAfterNoOnly include channels whose latest upload is after this ISO 8601 date
lastUploadBeforeNoOnly include channels whose latest upload is before this ISO 8601 date

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.2

TDQS

C2.9/5.0
Behavior2/5

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

With no annotations, the description carries full burden but only says 'Search...', omitting behavioral traits like rate limits, authentication needs, result structure, or potential side effects. The agent gets no insight beyond the basic action.

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 sentence that efficiently communicates the tool's purpose. It is front-loaded with 'Search for YouTube channels' but could benefit from slightly more detail without being verbose.

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

Completeness2/5

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

Given the complexity of 10 parameters and no output schema or annotations, the description is insufficient. It does not explain what the tool returns or how to interpret results, leaving gaps for a search tool with many filters.

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 baseline is 3. The description adds no additional meaning beyond summarizing the schema; it does not clarify parameter usage or provide examples.

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 verb 'Search' and the resource 'YouTube channels' with methods 'by handle, name, or query'. However, it does not differentiate from sibling tools like channels_findCreators or channels_getChannel, which could lead to ambiguity.

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. There is no mention of context, prerequisites, or exclusions, leaving the agent without decision-making support.

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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