"Known" matching MCP servers:

Enables searching and analyzing Ceph issues from multiple trackers, providing tools to find known issues, workarounds, and fixes.

Use 3,000+ pre-built cloud tools from Apify, known as Actors, to extract data from websites, e-commerce, social media, search engines, maps, and more

Helps AI agents avoid repeating known failures by providing deterministic lookup of dead ends for coding errors and country-specific real-world rules.

Enables AI agents to search job openings across free sources, prepare application materials using known experience, and handle authorized email sending and follow-ups.

Give your AI coding agent the Roblox DevForum and official creator docs — check if a bug is already known, read the accepted answer, and verify APIs before writing Luau.

Enables AI agents to query a public signed ledger of known failures and fixes before retrying, then ingest, confirm, fail, and share dense claims so subsequent agents avoid paying the same cost.

A unified knowledge retrieval tool for MCP-compatible LLMs, enabling structured external knowledge access from local files and future integrations.

Search and contribute to FixGraph — 25,000+ community-verified engineering fixes. Tools: fixgraph_search, fixgraph_get_fixes, fixgraph_submit_fix.

MCP server for UK Freedom of Information research. Connects AI assistants to WhatDoTheyKnow — the UK's largest FOI request platform to search requests, read responses, look up public authorities, and draft new requests.

Enables medical evidence retrieval and analysis via AI-powered search and summarization tools.

MCP server that helps coding LLMs avoid re-solving common problems by serving verified minimal code samples and compatibility evidence, with tools to search, retrieve, and explain known solutions across languages and environments.

Enables CVE lookups and risk assessment by integrating CISA Known Exploited Vulnerabilities (KEV) data and CVSS metrics. It helps users prioritize patching efforts by ranking vulnerabilities based on exploitation status and calculated risk scores.

MCP server that provides IT support tools to search known incidents, check ticket status, and create ticket drafts, enabling an AI assistant to help users with IT support queries.

Pay-per-call web scrape, search, and map for AI agents. HTTP MCP at /.well-known/mcp. Settle in USDC on Base (x402) or RLUSD/XRP. No API key; provider keys stay on the server.

Provides personalized CSS learning updates by tracking known concepts in memory, fetching latest CSS news via Perplexity, and guiding users through new CSS features they haven't learned yet.