A
licenseNot graded
qualityF
maintenanceA Model Context Protocol server that enables searching YouTube videos, retrieving and storing transcripts, and performing semantic search over video content without using the official YouTube API.
34
MIT
web-summaries-mcp
by extempore66
Fetches transcripts from YouTube videos and allows semantic search within them.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@web-summaries-mcpget transcript for YouTube video https://www.youtube.com/watch?v=dQw4w9WgXcQ"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
web-summaries-mcp
A Streamable HTTP MCP (Model Context Protocol) server that fetches YouTube transcripts and lets an LLM semantically search within them.
Tools
get_transcript— fetches the full transcript of a YouTube video, given a video ID or URL (watch,youtu.be,embed,shortslinks all work).search_transcript— semantically searches a transcript by meaning. Chunks the transcript, embeds each chunk and the query with a local sentence-embedding model (Xenova/bge-base-en-v1.5via@huggingface/transformers), and ranks chunks by cosine similarity (dot product on normalized vectors). Returns the top-k matching passages with timestamps.
Transcripts are fetched via YouTube's InnerTube API (the same one the YouTube Android app uses) and parsed from the caption track XML.
Related MCP server: youtube-summarize
Setup
npm install
npm startThe server listens on http://localhost:8080/mcp (Streamable HTTP transport — POST/GET/DELETE).
Project layout
mcp_server.js— Express +@modelcontextprotocol/sdkserver, tool definitions, embedding/search logic.transcript_core.js— InnerTube fetch + transcript XML parsing, shared by the server and the CLI script.fetch_transcript.js— standalone CLI for downloading a transcript to a file.htmlroot/— static assets served alongside the MCP endpoint.
Related MCP Connectors
An MCP server that gives any LLM or agent clean YouTube transcripts on demand: a single video, a whole channel, or a playlist, plus AI cleanup of auto-generated captions. API-key auth, credit-based, same backend as the public v1 API. Get a free API key with 25 free credits at youtubetranscriptdownload.com/account.
YouTube transcripts, search, channel browsing, and playlists for AI agents via MCP.
MCP server for RiverScript, an AI transcription platform - fetches transcripts shared via a link.
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