"How to allow an LLM to ask questions to a user" matching MCP connectors:

Turn any webpage into a structured action manifest — clickable, fillable, submittable elements.

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.

Connect AI to millions of laws and court cases with the Lawstronaut MCP.

CatchAll is a web search API built for comprehensive event retrieval — not ranked results, but all matching records.

Checks whether a website is readable and citable by AI systems (ChatGPT, Claude, Perplexity, etc.)

Docs: https://docs.keenable.ai/mcp-server Keenable is a free, remote MCP server that gives agents access to the web index. Search the web with ranked results and date/site filters, then fetch any indexed page as clean markdown. Works out of the box with no account or API key.

Product search and price comparison for AI agents. Search 100M+ products across thousands of retailers by text or image, compare live offers and prices, and turn any merchant URL into structured product data. No API key required to start; add one for unlimited use and affiliate commission.

Do things on live websites: prices, availability, quotes, bookings, anything behind a form or login.

Does a cited URL exist, and does the source name what your claim names? Two answers.

Track prices & price history on any online shop, with alerts and an API

URL to Markdown or structured JSON (schema.org/OG); renders SPA; batch reads. No signup/key.

Fast, intelligent web search and web crawling. New mcp tool: Exa-code is a context tool for coding

Know whether an AI agent should REUSE or REFETCH a URL before retrieving it again.

Convert files, URLs, and documents to clean, AI-ready Markdown via MCP.

Check if a link on a live page is followable: rel tokens, meta robots and X-Robots-Tag

Resolve sourced merchant facts and safe actions before an agent acts.

Run multi-step tasks in a real Chrome browser: persistent environments, live view, human takeover.

Render HTML, Markdown, or URLs to images, PDF, or branded artifacts; extract and watch pages.

Search remote jobs, compare salaries, create alerts, and request user-confirmed apply links.

Cite or capture a web page; installs the capture extension in Firefox and Chrome.