Search and retrieval (RAG) MCP servers

1,829 servers

Index your own content and search it by meaning (retrieval-augmented generation, RAG).

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xindex com.npmjs/xindex

Local semantic code search — index codebase, search by meaning or keywords

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Developer tools npm Local 85 a week
ArcadeDB MCP Server com.arcadedb/mcp-server

Built-in MCP server for ArcadeDB multi-model database (graph, document, vector, time-series)

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Databases Official MCP Registry Local
acemcp-node com.npmjs/acemcp-node

MCP server for codebase indexing and semantic search - Node.js implementation

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Developer tools npm Local 10 a week ISC
@antl3x/toolrag io.github.antl3x/toolrag

Context-aware tool retrieval for language models - unlock the full potential of LLM function calling without context window limitations or constraints.

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Search and retrieval (RAG) npm Local 23 a week APACHE-2.0
project-rag io.github.brainwires/project-rag

RAG-based codebase indexing and semantic search - dual purpose library and MCP server

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Search and retrieval (RAG) crates.io Local
agent-kb-mcp com.npmjs/agent-kb-mcp

MCP server — agent problem/solution KB backed by Postgres + pgvector, embeddings via Ollama

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Search and retrieval (RAG) npm Local 9 a week MIT
@axelfooley/opencode-qdrant-memory com.npmjs.axelfooley/opencode-qdrant-memory

MCP server for OpenCode persistent memory using Qdrant + Ollama embeddings

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Search and retrieval (RAG) npm Local 7 a week MIT
@mooosamir/vkb-mcp com.npmjs.mooosamir/vkb-mcp

MCP server for Vector Knowledge Platform — semantic search over knowledge bases

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Search and retrieval (RAG) npm Local 7 a week MIT
busker-mcp com.npmjs/busker-mcp

MCP server for Busker: all 17 x402 paid tools (HTML/PDF/OCR to markdown, extraction, chunking, embeddings, reranking, fetch, convert, QR, image ops, object detection, FX rates, phone validation, tx de

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Office documents and spreadsheets npm Local 7 a week MIT
heurchain com.npmjs/heurchain

MCP (Model Context Protocol) server for HeurChain — tiered agent memory with BM25 search, session lifecycle, procedural memory, ambient capture, and frictionless session-context injection

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Memory and context npm Local 7 a week MIT
pleme-codesearch io.github.pleme-io/codesearch

Fast, local semantic code search powered by Rust — BM25, vector embeddings, tree-sitter AST

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Search and retrieval (RAG) crates.io Local
context-hub-mcp com.npmjs/context-hub-mcp

Opinionated .context-first MCP server for local knowledge retrieval via stdio.

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Search and retrieval (RAG) npm Local 16 a week MIT
@iflow-mcp/wolfgangihloff-rechtsinformationen com.npmjs.iflow-mcp/wolfgangihloff-rechtsinformationen

MCP server for rechtsinformationen.bund.de - Official German Federal Legal Information Portal with semantic and full-text search

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Search and retrieval (RAG) npm Local MIT
Ragora io.github.mregmi/ragora-mcp

Search your knowledge bases from any AI assistant using hybrid RAG.

0% up · 30 days

Docs and knowledge bases Official MCP Registry Remote
@charansamanchi/mcp-onedrive com.npmjs.charansamanchi/mcp-onedrive

Give Joule Work Desktop and Claude Desktop semantic search over your local OneDrive documents — powered by SAP AI Core embeddings and LanceDB.

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Search and retrieval (RAG) npm Local 6 a week MIT
esmole-mcp com.npmjs/esmole-mcp

MCP server for Elasticsearch with named connections and SSH tunnels

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Search and retrieval (RAG) npm Local 6 a week MIT
pythia-lcs com.npmjs/pythia-lcs

Local code search and architectural memory MCP server for AI coding agents. Hybrid retrieval (vector + FTS + reranker) with Tree-sitter AST chunking. Runs entirely on your machine.

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Developer tools npm Local 15 a week FSL-1.1-ALV2
@elephance/mcp com.npmjs.elephance/mcp

MCP server for elephance local vector memory and schema retrieval

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Search and retrieval (RAG) npm Local 6 a week MIT
Vector DB MCP io.github.kroq86/vector-db-mcp

Assembly-accelerated DuckDB MCP server for code search, indexing, and symbol lookup.

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Search and retrieval (RAG) Official MCP Registry Local
@iflow-mcp/mnehmos-mnehmos-index-foundry-mcp com.npmjs.iflow-mcp/mnehmos-mnehmos-index-foundry-mcp

Deterministic Vector Index Factory - MCP Server

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Search and retrieval (RAG) npm Local PROPRIETARY
@iflow-mcp/priyankgodhat-etabs-mcp-server-local-embeddings com.npmjs.iflow-mcp/priyankgodhat-etabs-mcp-server-local-embeddings

MCP server for ETABS documentation using local embeddings

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Search and retrieval (RAG) npm Local ISC
@krish0023/coflow com.npmjs.krish0023/coflow

Local-first MCP server that gives every teammate's Claude Code a live, shared picture of what the rest of the team is working on. Git is the source of truth; the vector index is a disposable cache; sy

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Git and code hosting npm Local 5 a week MIT
@kyrillosishak/domicile com.npmjs.kyrillosishak/domicile

Domicile — your private AI stack. Vector database + RAG + LLM, all in the browser. Architectural data custody.

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Search and retrieval (RAG) npm Local 5 a week MIT
phosphor-icons-semantic-search-mcp com.npmjs/phosphor-icons-semantic-search-mcp

MCP server for semantic search over Phosphor icons

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Design and media npm Local 5 a week MIT
Pod io.github.heidiEC/context-pod

Persistent context for AI agents built fromlearned vectors with certainty scores.

100% up · 30 days

Search and retrieval (RAG) Official MCP Registry Remote
@clawket/mcp com.npmjs.clawket/mcp

MCP server for Clawket — LLM pull access to work management RAG

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Search and retrieval (RAG) npm Local 6 a week MIT
@mooosamir/vkp-mcp com.npmjs.mooosamir/vkp-mcp

MCP server for Vector Knowledge Platform — semantic search over knowledge bases

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Search and retrieval (RAG) npm Local 4 a week MIT
knowledge-mcp-server com.npmjs/knowledge-mcp-server

MCP server for semantic search, CRUD, and graph operations over hierarchical knowledge bases stored as Markdown with YAML frontmatter

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Docs and knowledge bases npm Local 4 a week MIT
sf-symbols-mcp com.npmjs/sf-symbols-mcp

MCP server that finds the right SF Symbol for a UI function using layered semantic search over verified catalog entries.

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Search and retrieval (RAG) npm Local 4 a week MIT
agentmem io.github.oxgeneral/agentmem

Lightweight persistent memory for AI agents. Hybrid search. 16 tools. One SQLite file.

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Memory and context Official MCP Registry
@quantic-impact/rvf-mcp-server com.npmjs.quantic-impact/rvf-mcp-server

MCP server for RuVector Format (RVF) vector database with META_SEG, COW branching, and witness chain — stdio and SSE transports

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Search and retrieval (RAG) npm Local MIT
@iflow-mcp/mushroomfleet-zero-vector-mcp-clean com.npmjs.iflow-mcp/mushroomfleet-zero-vector-mcp-clean

Streamlined MCP server for Zero-Vector persona and memory management

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Search and retrieval (RAG) npm Local MIT
@iflow-mcp/algolia-mcp-node com.npmjs.iflow-mcp/algolia-mcp-node

> 🚀 Hosted MCP Now Available > We’re excited to announce that a Hosted MCP is now available! This makes it easier than ever to connect your external data and APIs to ChatGPT — no setup or hosting requ

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Search and retrieval (RAG) npm Local ISC
@iflow-mcp/orneryd-mimir com.npmjs.iflow-mcp/orneryd-mimir

MCP server combining TODO tracking with external memory (Graph-RAG) for AI agents. Track tasks hierarchically while storing rich context in associative memory networks.

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Project management npm Local MIT
PoisonVectors io.github.jamesburton/poison-vectors

MCP server for semantic vector search with relevance feedback (poison-vector technique). Exposes embed, rerank, and feedback tools over stdio.

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Search and retrieval (RAG) NuGet Local
skill-depot com.npmjs/skill-depot

RAG-based skill retrieval system for AI agents. Scalable long-term storage with semantic search via MCP.

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Search and retrieval (RAG) npm Local 10 a week MIT
@neetesh-better/codectx com.npmjs.neetesh-better/codectx

Typescript AST graph and embedding-powered codebase context for coding agents.

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Developer tools npm Local 3 a week ISC
@talkbase/mcp-server com.npmjs.talkbase/mcp-server

TalkBase MCP server — query project context, search recordings, and ask questions via RAG

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Search and retrieval (RAG) npm Local 3 a week MIT
memorag-mcp com.npmjs/memorag-mcp

Intelligent context management layer for LLMs — incremental memory, token-efficient retrieval, MCP server included

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Memory and context npm Local 3 a week MIT
retrieval-lens com.npmjs/retrieval-lens

MCP server that audits RAG retrieval — logs what chunks the model saw, scores, queries, and sources before any answer was generated.

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Search and retrieval (RAG) npm Local 3 a week MIT
airweave-search-mcp com.npmjs/airweave-search-mcp

MCP server to search Airweave collections across GitHub, GitLab, Jira, RAG, and other connected data sources. Supports instant/classic/agentic search tiers.

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Git and code hosting npm Local 7 a week MIT
Snail.MCP.Memory io.github.orldev/snail.mcp.memory

MCP server that gives AI agents universal long-term local memory: semantically searchable records (facts, decisions, lessons, tasks) per project plus a typed knowledge graph of directed relations. SQL

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Memory and context NuGet Local
upstash-vector-mcp com.npmjs/upstash-vector-mcp

Upstash Vector MCP server - 为 AI 助手提供向量数据库操作能力（相似性搜索、向量管理、命名空间管理）

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Search and retrieval (RAG) npm Local 5 a week MIT
claude-mira3 com.npmjs/claude-mira3

Persistent memory for Claude Code - semantic search, cross-machine sync, learned preferences, error tracking

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Memory and context npm Local 45 a week MIT
vibe-analyzer io.crates/vibe-analyzer

Agentic RAG engine for code and knowledge bases. AST extraction, LLM enrichment, OpenSearch indexing.

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Search and retrieval (RAG) crates.io Local
lantern io.crates/lantern

Local-first, provenance-aware semantic search for agent activity

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Search and retrieval (RAG) crates.io Local
@iflow-mcp/msdanyg-smart-connections-mcp com.npmjs.iflow-mcp/msdanyg-smart-connections-mcp

MCP server for Obsidian Smart Connections - enables semantic search and knowledge graph queries

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Docs and knowledge bases npm Local MIT
Shebe health.rhobimd.oss/shebe

Fast BM25 full-text search for code repositories. 14 MCP tools, 2ms search latency.

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Search and retrieval (RAG) Official MCP Registry Local