Local-first persistent memory MCP: shared SQLite key/value store, searchable, TTL-aware, secret-safe
Local-first persistent memory MCP: shared SQLite key/value store, searchable, TTL-aware, secret-safe. The delx mcp server wraps that behind the Model Context Protocol, so an assistant can use it through 4 defined tools rather than through you.
Every chat client has its own ephemeral context. Quit the tab → preferences gone. Switch from Claude Desktop to Cursor → starting from scratch. Pin a side project in Hermes → invisible to the next agent.
Everything the assistant can do here goes through one of these:
Cursor — The Cursor tool exposed by this serverHermes — The Hermes tool exposed by this serverOpenClaw — The OpenClaw tool exposed by this serverEnvironment — The Environment tool exposed by this serverwill on npm is all you need. Most clients run it directly, so configuration is a few lines and a restart.
You will need 2 environment variables: DELX_MEMORY_PATH, DELX_MEMORY_HOST. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.
This sits in the database access group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Delx's toolset — Cursor, Hermes, OpenClaw and 1 more — is a fair guide to whether it matches your workflow. It is maintained by davidmosiah; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| Cursor | The Cursor tool exposed by this server. |
| Hermes | The Hermes tool exposed by this server. |
| OpenClaw | The OpenClaw tool exposed by this server. |
| Environment | The Environment tool exposed by this server. |
{
"mcpServers": {
"delx-memory": {
"command": "npx",
"args": ["-y", "will"],
"env": {
"DELX_MEMORY_PATH": "your-value",
"DELX_MEMORY_HOST": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| DELX_MEMORY_PATH | Filesystem location the server is allowed to use. | Optional |
| DELX_MEMORY_HOST | Endpoint or connection string the server talks to. | Optional |
Read-only SQL access to Postgres — let your assistant inspect schemas and answer questions from real data.
Manage your whole Supabase project in conversation — database, auth, storage, Edge Functions and branches.
Query, modify and analyse local SQLite databases in conversation — the fastest way to chat with a data file.
Metabase ships its own MCP endpoint — search your BI content, build and run queries, and save questions and dashboards without leaving the chat.
Official MongoDB server covering data, schemas and Atlas management — from find queries to spinning up clusters.
Serverless Postgres with database branching — point your assistant at Neon and let it work on disposable copies.