Knowl
Knowl is an MCP server that adds database tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Persistent memory for Claude Code, Cursor and Codex. It has 122 GitHub stars, is released under the Apache-2.0 license and runs locally with npx -y @dat999zx/knowl.
- Databases
- Apache-2.0
- Actively maintained
Install Knowl
Generated from the server's MCP registry entry. Replace your-value with your own values.
Claude Desktop
{
"mcpServers": {
"knowl": {
"command": "npx",
"args": [
"-y",
"@dat999zx/knowl"
]
}
}
}Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.
Claude Code
claude mcp add --transport stdio knowl -- npx -y @dat999zx/knowlCursor
{
"mcpServers": {
"knowl": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@dat999zx/knowl"
]
}
}
}Project file; use ~/.cursor/mcp.json to enable it in every project.
VS Code
{
"servers": {
"knowl": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@dat999zx/knowl"
]
}
}
}Claude Code (remote)
claude mcp add --transport http knowl "https://api.knowl.cloud/mcp/"The same server is also hosted as a remote MCP endpoint, so nothing runs on your machine.
Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).
About Knowl
Your CLAUDE.md only grows. Knowl retires facts when they change. Your agent starts every session blank, so you keep a CLAUDE.md. It only grows. Six months in it still names the database you migrated off last spring, and now the agent gets both answers.
- ai
- agents
- knowl
- memory
- persistent-memory
- agent-memory
- ai-tools
- claude
- codex
- mcp
Similar MCP servers
More databases MCP servers
Dbx
t8y2/dbx
Query databases from AI agents using connections configured in DBX.
DatabasesRustButterbase AI MCP Server
butterbase-ai/butterbase
Butterbase MCP server — manage your backend: schemas, auth, functions, storage, RAG, deploys.
DatabasesTypeScriptDBHub
bytebase/dbhub
Token-efficient database MCP server for PostgreSQL, MySQL, MariaDB, SQL Server, Oracle, SQLite.
DatabasesTypeScriptLINQ to DB
linq2db/linq2db
Inspect database schemas and execute SQL queries across multiple database providers with LINQ to DB.
DatabasesC#Mindwtr
dongdongbh/Mindwtr
Task automation via SQLite, desktop Local API, or Mindwtr Cloud; read-only by default.
DatabasesTypeScriptMCP Memory Service
doobidoo/mcp-memory-service
Open-source persistent memory for AI agent pipelines (LangGraph, CrewAI, AutoGen) and Claude.
DatabasesPython
What is Knowl?
Knowl is an MCP server that adds database tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Persistent memory for Claude Code, Cursor and Codex. It has 122 GitHub stars, is released under the Apache-2.0 license and runs locally with npx -y @dat999zx/knowl. The source code is at github.com/dat999zx/knowl.
How do I install the Knowl MCP server?
Add the command npx -y @dat999zx/knowl to your MCP client: put it in claude_desktop_config.json for Claude Desktop, run claude mcp add for Claude Code, or add it to .cursor/mcp.json (Cursor) or .vscode/mcp.json (VS Code). The snippets on this page are ready to paste.
Is Knowl free?
The server is open source under the Apache-2.0 license, so running it is free. It does not declare any required API key.
Is Knowl actively maintained?
The most recent commit was on Oct 6, 2026. The latest release is v5.25.0, published Oct 5, 2026. appsgit only lists MCP servers with a commit in the last six months and re-checks every server daily.