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Best MCP servers for vector search and databases

We found 50 MCP servers for vector search and databases in the catalog; these are the 15 that rank highest. The order comes from our rank, which weighs adoption, freshness, documentation and publisher identity. Nobody can pay for a place on this list. Postgres MCP, MCP AutoMem and Qdrant Memory lead it. Postgres MCP has the most GitHub stars here (240). 12 of the 15 had activity in the last 30 days. Remote servers need no local install; local ones run on your machine and can reach local files. Each entry lists why it made the list and links to its install page.

Updated Oct 26, 2026 · Built from catalog data; how we rank and grade

Top 15 of 50

  1. 1
    Postgres MCP

    pgEdge

    Enterprise PostgreSQL MCP server with NL queries, hybrid search (pgvector+BM25), and web UI

    • Most GitHub stars here (240)
    • Active in the last 30 days
    • Open source (PostgreSQL)

    ★ 240Last active Sep 28, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  2. 2
    MCP AutoMem

    verygoodplugins

    Graph-vector memory for AI assistants using FalkorDB and Qdrant

    • Runs locally or as a remote server
    • Active in the last 30 days
    • Open source (MIT)

    ★ 66Last active Oct 22, 2026Local (stdio), Remote (HTTP), Remote (SSE)Claude Code, VS Code, Codex, Cursor +2

  3. 3
    Qdrant Memory

    cnkang

    Persistent scoped Qdrant memory for agents, through four explicit stdio MCP tools.

    • Most weekly downloads here (1.2K)
    • Active in the last 30 days
    • Open source (MIT)

    ★ 1↓ 1.2K/wkLast active Oct 24, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  4. 4
    ChromaDB Remote MCP Server

    meloncafe

    Remote ChromaDB vector database MCP server with streamable HTTP transport

    • Remote server, no local install
    • Active in the last 30 days
    • Open source (MIT)

    ★ 12Last active Oct 23, 2026Remote (HTTP)Claude Code, VS Code, Cursor, Windsurf

  5. 5
    sqlite-graph-memory

    tonydzi

    Recall over your markdown notes: vector search plus your [[wikilinks]] as a graph, in SQLite.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 12↓ 124/wkLast active Oct 24, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  6. 6
    ContextLattice

    sheawinkler

    Private-by-default, local-first memory/context/task orchestrator for MCP apps and agents.

    • Remote server, no local install
    • Open source (Apache-2.0)

    ★ 156Last active Aug 26, 2026Remote (HTTP)Claude Code, VS Code, Cursor, Windsurf

  7. 7
    Gemdex

    nikships

    Persistent memory layer for AI coding agents: save, recall, update via Gemini plus LanceDB

    • Active in the last 30 days
    • Open source (MIT)

    ★ 6Last active Oct 22, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  8. 8
    Vector Store Scanner

    GuardBee

    Probes vector-database endpoints for unauthenticated exposure of embeddings/RAG data

    • Active in the last 30 days
    • Open source (MIT)

    ★ 1↓ 581/wkLast active Oct 22, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  9. 9
    Wso2 Docs MCP Server

    iamvirul

    Semantic search over WSO2 docs (APIM, IS, MI, Choreo, Ballerina) via RAG and pgvector.

    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 3Last active Oct 16, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  10. 10
    Memory OS AI

    romainsantoli-web

    Adaptive memory for AI agents — FAISS search, chat extraction, cross-project linking

    • Active in the last 30 days
    • Open source (GPL-3.0)

    ★ 3↓ 124/wkLast active Mar 3, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  11. 11
    amu-pgvector

    sangaraju1988

    Lineage-gated agent memory tools on Postgres + pgvector, enforced by row-level security.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 1↓ 45/wkLast active Oct 18, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  12. 12
    Vault Index

    GitGudatCodeing

    Local hybrid keyword + vector search (SQLite FTS5 + sqlite-vec) over markdown vaults and code.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 1Last active Oct 24, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  13. 13
    Scholar RAG MCP

    notwhiteblank

    Academic paper knowledge-base MCP server: PDF ingest, vector search with reranking, KB management.

    • Open source (MIT)

    ★ 5↓ 57/wkLast active Sep 4, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  14. 14
    polymnemo

    PCBZ

    Shared cross-LLM long-term memory over MCP: semantic recall, sessions, and media (pgvector).

    • Remote server, no local install
    • Active in the last 30 days
    • Open source (MIT)

    Last active Oct 24, 2026Remote (HTTP)Claude Code, VS Code, Cursor, Windsurf

  15. 15
    Pikelet

    mcn92

    Search self-contained.pikelet knowledge artifacts over MCP — no vector DB, no embedding API.

    • Open source (Apache-2.0)

    ★ 2Last active Sep 23, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

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