Web Data Toolkit — MCP server

Four public-data tools for any MCP client: YouTube transcripts (one video or a whole channel), Google Trends (interest over time, by region, related queries), and Google Play reviews.

Hosted and remote — there is nothing to install, build, or keep running. Point your client at one URL.

{
  "mcpServers": {
    "web-data-toolkit": {
      "type": "http",
      "url": "https://web-data-toolkit.vercel.app/mcp",
      "headers": { "x-api-key": "YOUR_KEY" }
    }
  }
}

Clients that accept only a URL can carry the key in the query string instead: https://web-data-toolkit.vercel.app/mcp?key=YOUR_KEY

Try it before signing up. Put wdt_demo_public in as the key. It is a shared demo key: rate limited, and capped at 10 rows per call, but every tool answers and you can see the exact shape of the data before you decide anything.

Tools

Tool	What it returns	Required
youtube_transcript	Transcript text for up to 50 videos, with language, an auto-generated flag, word count, title and channel	url
youtube_channel_transcripts	Every recent video of a channel, @handle or playlist, each with metadata and transcript	source
google_trends	Interest over time, interest by region, and top plus rising related queries for up to 5 keywords	keyword
google_play_reviews	Rating, text, author, thumbs-up, app version and the developer's reply	app

Optional arguments are described in each tool's input schema, so your client will show them. Full REST documentation, an OpenAPI specification and an llms.txt live at https://web-data-toolkit.vercel.app.

Getting a key

Subscribe on RapidAPI: https://rapidapi.com/leetanakung98/api/web-data-toolkit. There is a free tier.

How it behaves

• Transport: JSON-RPC 2.0 over Streamable HTTP, protocol 2025-06-18 (it will also negotiate 2025-03-26 and 2024-11-05). The server is stateless: it issues no session id, and GET returns 405 because there is no server-initiated stream.
• Latency: every call is a live fetch from the source, not a cache. Measured 2026-09-14, one call each: a YouTube transcript in 3.7s, Google Play reviews in 3.8s, a Google Trends keyword in 8.6s; the slowest single call that day was 21s. Set your client timeout to at least 60 seconds.
• Large results: a tool result is truncated at 120,000 characters and says so in its first line, so a whole channel cannot silently blow up a context window. Narrow the request for the rest.
• Errors: a failed call comes back as an MCP tool result with isError set and the reason in the text, rather than as a protocol error, so an agent can read and recover from it.

Honest limits

• Public data only. Nothing behind a login, and no personal data beyond the public author name a platform already displays on a review.
• Transcripts are whatever the platform publishes. Auto-generated captions carry the errors the machine made, and the response tells you which kind you received.
• Google Trends values are relative interest as Google reports them. They are not search volumes.
• There is no published uptime figure, because there is not yet enough history to state one honestly.
• An App Store reviews tool was offered until 2026-09-14 and was withdrawn: Apple's public customer-reviews feed stopped returning entries for every app and country, and shipping a tool that returns nothing is worse than shipping none. It returns only if a reliable public source does.

License

MIT — see LICENSE. The license covers this repository; the hosted service is a separate offering with its own terms on RapidAPI.