Persistent layered memory MCP server for AI agents — SQLite + FTS5 backend
Persistent layered memory MCP server for AI agents — SQLite + FTS5 backend. That is what the mnemon mcp mcp server brings to an AI assistant: the same capability, reachable through the Model Context Protocol rather than a separate app or dashboard.
Your AI agent forgets everything after each session. Mnemon fixes that.
The server publishes 2 tools. What each one is for:
Verify — You should see 10 tools in the response. The database (~/.mnemon-mcp/memory.db) is created automatically on first runStemming — Snowball stemmer applied at both index time and query time for English and Russian. This means "running" matches "runs", and "книги" matchesConfiguration is passed through the environment: MNEMON_EMBEDDING_API_KEY, MNEMON_OLLAMA_URL, MNEMON_AUTH_TOKEN, MNEMON_HOST, MNEMON_DB_PATH, MNEMON_KB_PATH, MNEMON_CONFIG_PATH. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
Installation goes through your MCP client rather than a global install: point it at mnemon-mcp on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.
Plenty of database access servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Mnemon MCP's toolset — Verify, Stemming — is a fair guide to whether it matches your workflow. It is maintained by nikitacometa; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| Verify | You should see 10 tools in the response. The database (~/.mnemon-mcp/memory.db) is created automatically on first run. |
| Stemming | Snowball stemmer applied at both **index time** and **query time** for English and Russian. This means "running" matches "runs", and "книги" matches "книга". Stop words are filtered from queries to improve precision. |
{
"mcpServers": {
"mnemon": {
"command": "npx",
"args": ["-y", "mnemon-mcp"],
"env": {
"MNEMON_EMBEDDING_API_KEY": "your-value",
"MNEMON_OLLAMA_URL": "your-value",
"MNEMON_AUTH_TOKEN": "your-value",
"MNEMON_HOST": "your-value",
"MNEMON_DB_PATH": "your-value",
"MNEMON_KB_PATH": "your-value",
"MNEMON_CONFIG_PATH": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| MNEMON_EMBEDDING_API_KEY | Credential the server authenticates with. | Yes |
| MNEMON_OLLAMA_URL | Endpoint or connection string the server talks to. | Yes |
| MNEMON_AUTH_TOKEN | Credential the server authenticates with. | Yes |
| MNEMON_HOST | Endpoint or connection string the server talks to. | Optional |
| MNEMON_DB_PATH | Filesystem location the server is allowed to use. | Optional |
| MNEMON_KB_PATH | Filesystem location the server is allowed to use. | Optional |
| MNEMON_CONFIG_PATH | Filesystem location the server is allowed to use. | Optional |
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