Memory Vault MCP Server

The memory database for AI applications. Self-hosted Postgres + pgvector with hybrid search, MCP-native, and a knowledge graph baked in. Its 6 documented tools cluster into recall, remember, forget, purge.

People who work with ai memory, hybrid search and knowledge graph and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-09-14 · ★ 63 · #197 OF 304 MAINTAINED MEMORY · VERIFIED 2026-09-18

MIT · Python servers · how we verify → /methodology

01 · Install Memory Vault

before you install - you'll need

Set DB_HOST, DB_PORT, DB_NAME, DB_USER, DB_PASSWORD, MCP_HTTP_ENABLED, MCP_HTTP_ALLOWED_HOSTS before connecting.

Docker

docker run -i --rm ghcr.io/mihaibuilds/memory-vault-mcp:1.6.0

Claude Desktop - add to config

{
  "mcpServers": {
    "mihaibuilds-memory-vault": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/mihaibuilds/memory-vault-mcp:1.6.0"
      ]
    }
  }
}

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as container (OCI image) - can be sandboxed away from your filesystem

license MIT - declared in the repository

registry namespace io.github.MihaiBuilds is GitHub-verified and matches the repo owner

03 · What Memory Vault can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can search memories with hybrid search (vector + full-text + RRF), and move a memory to another space, rebuilding its graph entries.

Capability map

Tools grouped from the project's README - what Memory Vault lets an agent do.

Recall

1 tool - e.g. Search memories with hybrid search (vector + full-text + RRF)

recall

Remember

1 tool - e.g. Store a new memory - auto-classified and embedded

remember

Forget

1 tool - e.g. Soft-delete a memory by chunk ID

forget

Purge

1 tool - e.g. Permanently delete memories forgotten more than N days ago

purge_forgotten

update

1 tool - e.g. Move a memory to another space, rebuilding its graph entries

move_memory

Memory

1 tool - e.g. Database health, chunk counts, embedding model info

memory_status

Limitations (from the README)

- English-only NER. en_core_web_sm is English-trained; non-English text gets little to no useful entity extraction. Hybrid search and chat work fine in any language - only the auto-extracted knowledge graph is English-limited. - NER is context-dependent. spaCy decides PERSON vs. ORG based on the surrounding sentence. The same name can land as both Person and Project entities depending on syntactic role. - No fuzzy en

Latest releases

v1.6.0 · 2026-09-10

The MCP server can now be reached over HTTP, so a client on another machine no longer needs an SSH tunnel or docker exec to talk to a vault running in Docker. · Nothing here requires action on upgrade. The HTTP…

v1.5.0 · 2026-09-05

Memory Vault v1.5.0 · Eight additions, most of them about doing something with a graph you have · already built: reading the memories behind a node, filtering by more than · one type at a time, and merging the entities…

v1.4.0 · 2026-08-23

v1.4.0

04 · Who maintains Memory Vault

Memory Vault is maintained by mihaibuilds. It's the only MCP server we track from this author; the repo dates to Mar 2026.

05 · Facts

repository: github.com/mihaibuilds/memory-vault
website: https://mihaibuilds.com/
category: memory - ranked #197 of 304 actively-maintained memory servers as of 2026-09-18.
release cadence: 10+ releases in the last 90 days (latest 2026-09-10)
registry: io.github.MihaiBuilds/memory-vault (active, first published 2026-05-18 · 10 versions)
packages: oci:ghcr.io/mihaibuilds/memory-vault-mcp:1.6.0

06 · Memory Vault FAQ

Is Memory Vault still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-14 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

What can Memory Vault do?

With this server connected, an agent can search memories with hybrid search (vector + full-text + RRF), and move a memory to another space, rebuilding its graph entries.

How do I install Memory Vault?

Run `docker run -i --rm ghcr.io/mihaibuilds/memory-vault-mcp:1.6.0`. The README documents 7 environment variables (DB_HOST, DB_PORT, DB_NAME…) to set first. Set DB_HOST, DB_PORT, DB_NAME, DB_USER, DB_PASSWORD, MCP_HTTP_ENABLED, MCP_HTTP_ALLOWED_HOSTS before connecting. You can also paste the ready-made client config above.

07 · Alternatives to Memory Vault

Alternatives to Memory Vault

Maintained memory servers if Memory Vault isn't the fit.

Pairs well with

Servers that cover what Memory Vault doesn't - only shown when the pairing reason fits the companion.

More memory MCP servers · Aimeat · Mnemosyne OS · Mnemoverse Memory · MemoCat - Shared AI Memory

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