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MCP servers tagged information-retrieval
44 live MCP servers tagged "information-retrieval", ranked by trust score. Tags come from package metadata and repository topics, so this list covers servers across every category that work with information-retrieval.
Bm25s
Fast BM25 search in Python, powered by Numpy and Numba
Statespace
Interactive web apps for AI agents
Deep Research MCP
A Model Context Protocol (MCP) compliant server designed for comprehensive web research. It uses Tavily's Search and Crawl APIs to gather detailed information on a given topic, th…
Txtai
💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows
Haystack
Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over…
Moorcheh
Model Context Protocol server that brings Moorcheh search and RAG tools to MCP clients.
Redevops Rag
Hybrid RAG (DuckDB vector + BM25 + RRF + recency/keyword priors + optional cross-encoder rerank) as an installable library + CLI.
Serp It
MCP Tool, that can utilize multiple search engines and processing to provide AI ready results
Kb Arena
Benchmark 19 retrieval architectures (vector, contextual, QnA, knowledge graph, LightRAG, hybrid, RAPTOR, PageIndex, BM25, metadata-filtered, temporal, rerank, HyDE, multi-query,…
Archive Query Log
📜 The Archive Query Log.
Whoosh
Fast, pure-Python full-text indexing and search. Actively maintained continuation of Whoosh / whoosh-reloaded. Install: pip install whoosh3
Hitgate
Portable hybrid (BM25 + dense + RRF) retrieval engine and a label-free evaluation harness — extracted from a personal AI-assistant memory index and decoupled to run on any source…
Gather
Research intake that reaches the hard places: web, video, papers, scanned PDFs, browser, OCR, and audio into structured research packets. DOM extraction and change tracking built…
Longbook Rag Eval Lab
MCP-enabled evaluation and claim-grounding toolkit for long-document RAG systems - retrieval evaluation (5 methods), claim verification, a local FastAPI app, a local stdio MCP ser…
Layout Aware RAG
Layout-aware RAG over engineering datasheets: hybrid dense/BM25 retrieval at page-native layout-region granularity, with region-level evidence provenance
Loopevo
An open-source platform that turns natural-language intent into governed, reusable, and self-evolving AI workflows.
TARILIO
AI-powered Information Retrieval with integrated AI Assistant, MCP Client, Local LLM server
Graphstore
Memory infrastructure for AI agents!! store, recall by meaning or association, ingest documents, and track beliefs in one Python library.
Fetchium
Rust-native universal retrieval layer for humans and AI agents — search, extract, rank, and synthesize the web. CLI + REST API + MCP server, with adaptive extraction (CEP), token-…
AI Agent Pipeline
🐙 AI Agent Pipeline routes queries by intent to docs, weather, or chat, with LangGraph, ChromaDB, and LangSmith for modular, observable workflows across CLI and UI.
Skeinrank
SkeinRank — Domain Language Control Plane for enterprise search, RAG, and AI-agent workflows.
Local RAG Backend
This is the backend for a RAG system that runs on Docker Compose. It registers documents in a wide range of file formats, which can be searched using the MCP server.
Ohmyrepos
Oh My Repos: Semantic search for GitHub starred repositories.
BM 25 Search
MCP server and CLI for BM25 keyword search over a local Markdown corpus — drop .md files into data/ and query from any MCP-compatible client or the command line.
Smesh Crawler
Agent-orchestrated web crawler for exact evidence and historical changepoints—with deterministic policy, robots compliance, and local MCP support.
Driftglass
Keep a current answer to questions that outlive the news cycle.
Pydantic AI Tech Intel Briefing
Pydantic AI assistant for public-source technology intelligence and daily Chinese briefings.
MCPARDF CLIENT
Cliente MCP (TypeScript + Express) que sincroniza catálogos ARDF, indexa en SQLite (sqlite-vec) y expone búsqueda híbrida (semántica+léxica) vía API REST ( /status, /sync, /refres…
Books Rag
Precision-first RAG engine for technical books — hybrid retrieval, reranking, citation-backed answers with abstention, 34 MCP tools
Verifiable Deep Research Harness
可验证的Deep Research Agent Harness，支持多智能体协作、长程检索、证据溯源、引用核验、断点恢复、多模态输入与可复现评测。Verification-centric Deep Research Agent Harness with multi-agent orchestration, long-horizon retrieval, e…
Serica
Single-binary web search + article extraction service (REST + MCP). AGPL-3.0-only.
Pathfinder Rag
Scraper, hybrid BM25/vector retrieval, MCP server, and a multi-hop agent client over the Pathfinder 1e ruleset. Measured end to end.
Patent Gap Finder MCP
Research Paper → Patent Gap Finder: MCP server that analyzes research papers, searches global patents (USPTO, EPO, Google), and identifies patentable white-space using AI.
Metacontext
Metacontext is an AI-native, multi-agent system that centralizes knowledge from code, docs, and expert insights. It breaks silos, preserves tacit knowledge, maintains living docs,…
Ulpia
The memory is yours. The model is a guest. Local-first memory and retrieval layer for AI agents: RAG with no model in the path, abstention as a verdict, MCP server, evaluation inc…
Bert
Long-context project memory for Claude Code / Cursor / Codex — a local MCP server with hybrid retrieval (dense + BM25 + cross-encoder rerank). Falsification-first benchmarks, hone…
Rag Eval Pipeline
Retrieval-augmented QA over a PDF corpus, built around a from-scratch recall@k / hit-rate@k / MRR evaluation harness — exposed as MCP tools and orchestrated as a LangGraph agent (…
Applied AI
Modular Python libraries for applied AI: chunking, LLM generation, retrieval, keyword extraction, MCP client, and Slack search.
Opencode Web Deepsearch
DuckDuckGo-powered deep web search plugin for OpenCode with iterative search refinement and AI-ready results.
Keepygaga Rag
Local-first knowledge retrieval for AI agents, combining FTS5, vector search, reranking, and traceable MCP results.
Agentic Context Compression Framework
Rust MCP server for lossless agent-context compression, reducing token usage while preserving retrieval accuracy.
Engineering Knowledge
Local-first engineering knowledge retrieval with deterministic ingestion, provenance, hybrid search, reproducible evaluation, CLI, and read-only MCP.
Archaeo
A planned CLI and MCP server for finding dependency fixes from Node.js stack traces and repository history.
Net Sift
Coverage-first social and web deep-search as an MCP server: sweep many sources, rank results, report the gaps. Reaches X, Reddit, Instagram and more through your logged-in Chromiu…