Analyze YouTube Comments with AI | FetchLayer
Unofficial Third-party API
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Turn YouTube comments into audience insight.

Sentiment analysis Content ideas Audience feedback

Extract a public video's comments as structured JSON, then ask focused questions about the feedback. Find what viewers liked, what confused them, what they want next, and where the strongest conversation is happening.

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The workflow

From raw comments to a sentiment breakdown.

FetchLayer gives you the public data in a predictable shape. Your code, automation, or AI agent can turn it into an ongoing source of customer insight.

  1. 01

    Fetch the relevant conversation

    Provide a public video URL and choose top or newest comments and pages based on the feedback you need.

  2. 02

    Load reply threads on demand

    Use the /comments/replies endpoint to pull full discussion threads for comments where the conversation matters most.

  3. 03

    Ask for an actionable synthesis

    Use an LLM or your own analysis to group feedback into themes, cite representative comments, and suggest the next action.

What to surface

The signal hiding in viewer reactions.

Audience reaction

Summarize the tone of the response while retaining the individual comments behind broad sentiment labels.

Repeated questions

Find questions that should become a follow-up video, documentation improvement, or a clearer product explanation.

Content requests

Surface the topics, comparisons, and examples viewers explicitly ask the creator to cover next.

Product feedback

When a video introduces a product, comments become public qualitative feedback about objections, gaps, and value.

Conversation context

Include nested replies where the actual insight comes from the discussion rather than the first comment alone.

Competitor research

Analyze public responses to competitor videos to understand what their audience praises, questions, or rejects.

AI-ready input

Hand your agent the comments — and the actual question.

Use FetchLayer through REST or MCP. The important part is keeping the original feedback alongside the summary so your team can inspect the evidence behind every conclusion.

agent prompt

Read these YouTube comments and replies. Group the audience feedback into praise, confusion, objections, and requests for future content. Cite the most representative comments for every theme.

Viewers understand the main idea but repeatedly ask for a practical setup tutorial. The strongest objection is uncertainty about pricing; make both themes easy for the creator to inspect in the source comments.

Pricing

Start free. Scale when ready.

Pay per request with no commitment, or lock in a flat monthly rate with built-in savings.

Free plan — 30 requests

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$1.99

per 1,000 requests

$0.00199 per request · credits never expire

How credits work — no multipliers

One credit = one API call, on every endpoint and platform. No matter how many results come back, you pay for the call, not the output size. Most scraping APIs charge multipliers of 5x, 25x, even 75x per call depending on the target — here it's always 1.

  • No multipliers — 1 request = 1 credit
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FAQ

Common questions.

Can FetchLayer analyze YouTube comment sentiment?

FetchLayer retrieves structured public comment data. Send that data to your own model, analytics stack, or MCP-connected agent for sentiment, themes, questions, and qualitative analysis.

Should I analyze top or newest comments?

Use top comments to understand the most visible and engaged feedback. Use newest comments when you need a more current snapshot of how viewers are reacting.

Can I include comment replies in the analysis?

Yes. Use the /comments/replies endpoint with a comment ID to load a specific reply thread. Set the depth parameter to control how many levels of nested replies to include.

Start with the public feedback.

Retrieve the source data, keep the evidence, and build the feedback workflow your team actually needs.