Research & Knowledge
AI agents for web search, document retrieval, and knowledge synthesis. These tools give agents real-time access to the internet, specialized databases, and document stores — enabling grounded, citation-backed responses. Critical for any agent that needs current or domain-specific information.
Agent Lightning
Optimizes any AI agent with reinforcement learning without rewriting it, decoupling training from execution so existing…
LightRAG
Builds a graph-based retrieval index over documents so agents can answer questions spanning many sources, served throug…
Agent Switchboard
Searches a curated, open-source directory of 300+ verified AI agents, MCP servers, and agentic tools by capability, cat…
akta.pro
Serves private-company data to agents — 20M+ companies across 70+ fields with entity-resolved news, available over REST…
Algolia
Hosted search and discovery API with typo tolerance, faceting, and vector search, callable directly for agent retrieval…
Almanac
Compiles a company-wide wiki from Slack, files, wikis, and repos, then gives agents its own computer plus MCP search ov…
AnythingLLM
Runs an all-in-one, self-hosted RAG and agents app: chat with documents, build agents, and connect tools via MCP. Deskt…
Atlassian Rovo
AI teammate for Atlassian products — searches across Jira, Confluence, and connected apps to find answers and automate…
Brave Search MCP
Brave Search MCP server. Gives AI agents privacy-preserving web and local search with an independent index — no Google…
Casetext / CoCounsel
AI legal research assistant by Thomson Reuters that reviews documents, drafts memos, analyzes contracts, and finds rele…
Cherry Studio
Runs a Windows, Mac, and Linux desktop client for OpenAI, Gemini, Anthropic, Ollama, and LM Studio models, with 300+ pr…
Clipto MCP
Indexes terabytes of local video, audio, and images so agents can search them in natural language and pull back timesta…
Cloudflare Web Search API
Returns structured web search results from Exa, Linkup, or Ceramic through Cloudflare's AI Gateway via REST or a Worker…
Concho
Models an entire enterprise codebase into a queryable knowledge layer, then serves sourced architectural and business-l…
context.dev
Scrapes, crawls and searches the web for agents through a REST API, SDKs, CLI and hosted MCP server, returning LLM-read…
CourtListener MCP
Searches US case law, PACER dockets, judges, citations, and oral arguments through a hosted MCP server over the Free La…
Crawl4AI
Crawls and scrapes web pages into clean Markdown for RAG pipelines, with CSS, XPath, and LLM-driven structured extracti…
Crunchbase MCP
Brings Crunchbase private-market intelligence into Claude, ChatGPT and Cursor over MCP, covering company profiles, fund…
DeerFlow
Open-source deep research super-agent from ByteDance that orchestrates sub-agents with memory, code sandboxes, and MCP-…
Docling
Parses PDF, DOCX, PPTX, XLSX, HTML, audio, and image files into a unified DoclingDocument and exports Markdown, HTML, D…
Exa AI
Neural search engine API that understands meaning — find similar pages, search by content type, and get clean extracted…
FastGPT
Builds AI agents on a visual Flow canvas backed by hybrid-retrieval knowledge bases, workflow and RPA nodes, bidirectio…
Firecrawl
Turn websites into LLM-ready data — crawl, scrape, and convert web pages to clean markdown for AI consumption.
Glama
MCP server directory with a public paginated JSON API for programmatic discovery, plus hosting and inspection tooling f…
Glean
Enterprise AI search and knowledge management — connects all your company apps and surfaces answers with AI-powered wor…
GPT Researcher
Autonomous deep-research agent that plans queries, browses the web in parallel, and produces cited research reports in…
Graphify
Maps a codebase, docs, PDFs, and media into a queryable knowledge graph so AI coding assistants trace and cite paths in…
Hugging Face MCP
Discovers AI models, explores datasets, and accesses model documentation and capabilities on Hugging Face — the central…
Jina Reader
Web reader and search API for AI pipelines. Converts any URL to clean markdown, runs grounded search, and powers RAG at…
Keenable
Serves a hundred-billion-document web index built for agents rather than human search pages, returning dense structured…
Khoj
Self-hostable AI second brain that answers over your documents and the web, runs custom agents, and schedules automatio…
Linkup
Production-grade web search API for AI — sourced, cited answers with full-text snippets from trusted sources. REST API,…
LinqAlpha
Run research agents over filings, transcripts, and news for buy-side investing — encodes an analyst research framework…
LlamaIndex
Data framework and cloud platform for LLM apps over private data. Offers parsing, indexing, retrieval, agent workflows,…
LLM Wiki
Builds and maintains an interlinked wiki from your documents in a desktop app, and exposes hybrid search, graph and fil…
Markdownify MCP
MCP server that converts PDFs, images, audio files, and web pages into clean Markdown for efficient LLM ingestion and R…
MathCode
Mathematical coding agent that formalizes and verifies mathematical reasoning by generating and checking executable cod…
MaxKB
Open-source enterprise RAG platform for building AI agents. Upload docs, auto-vectorize, and orchestrate multi-step wor…
MDZHB
Public, persistent message board for AI agents to publish and read findings across sessions via HTML/JSON and an HTTP A…
MinerU
Converts PDFs, Office documents, and scanned pages into LLM-ready Markdown or JSON, preserving tables, formulas, and re…
Obsidian MCP
MCP server connecting AI agents to Obsidian vaults via the Local REST API plugin. Read, search, and write notes to grou…
Onyx
Open-source enterprise AI search and assistant platform — connects to Slack, GitHub, Confluence, Drive and 40+ sources…
OpenAlex AI Agent Connector
Lets AI assistants search and analyze OpenAlex scholarly works, authors, institutions, and citations over a remote MCP…
OpenKnowledge
Runs an AI-native Markdown editor and wiki with built-in MCP server, skills, and agentic search. Connects to Claude, Co…
OpenLLMetry
Instruments LLM and agent applications with OpenTelemetry-native tracing, exporting spans for prompts, tool calls, and…
OpenScience
Runs a research agent for scientists that reviews literature, writes and runs analysis code, and reproduces experiments…
OWL
Optimised Workforce Learning multi-agent system ranked #1 open-source on the GAIA benchmark, orchestrating specialised…
PageIndex
Indexes long documents as a reasoning-based hierarchical tree so agents retrieve by navigating structure instead of emb…
Parallel
Gives AI agents web search, URL extraction, and deep research APIs that return cited, structured results, with Python a…
Patsnap
Patent and scientific literature search across global databases using natural language, semantic, or keyword queries wi…
Perplexity Sonar
AI search API delivering grounded, cited answers with real-time web access — power your apps with Perplexity's search i…
Prime Agent
Self-improving reinforcement-learned agent from Prime Intellect that refines its own policy across long-horizon tasks.
PrivateGPT
Self-hosted document QA platform with OpenAI-compatible REST API, local LLM support via Ollama, a full RAG pipeline, an…
Profound
Tracks and shapes how brands appear inside AI search and answer engines, exposing visibility analytics to agents throug…
QMD
Indexes local markdown notes, meeting transcripts, and docs for on-device BM25, vector, and LLM-reranked hybrid search,…
RAGFlow
Open-source RAG engine with deep document parsing (tables, charts, images) and an official MCP server. Deploy via Docke…
Ragie
Retrieval API for AI applications. Ingest PDFs, web pages, and files, then query with semantic search. Built-in chunkin…
Reddit MCP Buddy
MCP server for Reddit — search subreddits, retrieve posts and comment threads, analyze user activity, and post content.…
RenooLab
Find building tradespeople in France, plan multi-trade searches and request moderated contact. Free read-only A2A acces…
Rowboat
Builds a backlinked knowledge graph from your email, meetings and Slack in a local desktop app, then lets agents query…
ScrapeGraphAI
Scrapes websites from a natural-language description of the data you want, building the extraction graph automatically…
Semantic Scholar MCP
Searches millions of academic papers on Semantic Scholar and arXiv with citation analysis and full-text PDF extraction.…
Serper
Fast Google search API returning structured SERP results, widely used to give agents fresh web results without scraping.
SoL-Pi
Extends the Pi agent harness with AutoResearch loops from NVIDIA, improving efficiency on long-running autonomous resea…
STORM
Researches a topic and writes a cited, Wikipedia-length report by simulating multi-perspective question asking. Co-STOR…
Tako
Live web search plus licensed datasets for agents, covering company financials, macroeconomic indicators, web traffic,…
Tavily
Search API built specifically for AI agents — optimized for LLM consumption with structured results, content extraction…
Terminal-Bench-Science
Evaluates agents on 70 expert-curated real scientific research workflows, run and graded through the Harbor benchmark h…
ToolUniverse
Curates a large collection of scientific tools and MCP servers for AI scientists, exposing biomedical and research APIs…
TrendRadar
Aggregates trending lists from 11 mainstream platforms and RSS feeds, filters them by keyword, pushes digests to chat a…
WeKnora
Turns documents into a queryable knowledge base with RAG question answering, a ReAct agent orchestrating retrieval, MCP…
What Are You Building
Catalogs indie builders and their AI/SaaS products worldwide by category and country. Exposes a public JSON API and MCP…
You.com Search API
Programmable AI search with web, news, and RAG endpoints — grounded answers with citations for AI applications.