MCP Servers · Memory

dat999zx/knowl

Name: dat999zx/knowl
Author: Various

Persistent memory for Claude Code, Cursor and Codex. Facts are typed, sourced, and retired when they change. Local SQLite, no API keys.

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Our verdict

Not reviewed yet

We have not reviewed dat999zx/knowl yet

No one at Enterprise DNA has checked this listing against its sources. The description comes from public listings gathered automatically. Any fact below shows where it came from and when it was last checked.

How we review records

From the listing

About dat999zx/knowl

Persistent memory layer for Claude Code, Cursor and Codex. It stores typed, sourced facts in a local SQLite database and retires them when they change. No API keys required; written in TypeScript.

Best for

Developers using multiple coding agents who want a shared, local memory store

Use cases

Give Claude Code long-term project context across sessions
Let Cursor remember recurring constraints and preferences
Maintain a sourced fact base for Codex that updates when facts change

Notes

99 stars on GitHub. Last updated 2026-09-21. Licensed Apache-2.0.

Pros

Runs locally with SQLite, no external services
Facts include types and sources for traceability
Automatically retires stale facts when they change

Cons

Small project with 99 stars, so limited adoption
Requires TypeScript toolchain and manual integration
Project appears community-maintained, not an official tool

Key facts

What we have checked

Not checked yet. Dated facts such as prices, releases and repository activity appear here once we have confirmed them from a source.

How to use

How to set it up

As the listing publishes it. We have not run this install.

Install

npx @dat999zx/knowl init

Tools exposed

HippoRAG-v2
Qwen3-Embedding-4B

Clients the listing names (not checked here)

Claude Desktop, Claude Code, Cursor, Windsurf, Cline, Continue, ChatGPT

Install

Add dat999zx/knowl to your client

Not verified yet

Our lab has not run this server yet. "Config checked" on a client means the recipe matches that client's documented config format; it does not mean we ran it.

Claude Code

Config checked

Run in your terminal (remote server)

claude mcp add --transport http dat999zx-knowl https://api.knowl.cloud/mcp/

Version 5.28.1 · From the Official MCP registry, read 24 Oct 2026 · Format checked against Claude Code's config docs

Claude Desktop

Config checked

Add to claude_desktop_config.json (runs on your computer)

{
  "mcpServers": {
    "dat999zx-knowl": {
      "command": "npx",
      "args": [
        "-y",
        "@dat999zx/knowl@5.28.1",
        "serve"
      ]
    }
  }
}

Version 5.28.1 · From the Official MCP registry, read 24 Oct 2026 · Format checked against Claude Desktop's config docs

Cursor

Config checked

Add to .cursor/mcp.json (remote server)

{
  "mcpServers": {
    "dat999zx-knowl": {
      "url": "https://api.knowl.cloud/mcp/"
    }
  }
}

Version 5.28.1 · From the Official MCP registry, read 24 Oct 2026 · Format checked against Cursor's config docs

VS Code

Config checked

Add to .vscode/mcp.json (remote server)

{
  "servers": {
    "dat999zx-knowl": {
      "type": "http",
      "url": "https://api.knowl.cloud/mcp/"
    }
  }
}

Version 5.28.1 · From the Official MCP registry, read 24 Oct 2026 · Format checked against VS Code's config docs

Codex

Config checked

Add to ~/.codex/config.toml (remote server)

[mcp_servers.dat999zx-knowl]
url = "https://api.knowl.cloud/mcp/"

Version 5.28.1 · From the Official MCP registry, read 24 Oct 2026 · Format checked against Codex's config docs

ChatGPT

Config checked

Fill in the Add custom MCP server form (remote server)

Where: ChatGPT Plugins > + > Add custom MCP server
Name: Knowl
Description: Persistent memory for AI agents, for code, research and everyday life. Stale facts retire.
Connection: Public endpoint
MCP server URL: https://api.knowl.cloud/mcp/

Version 5.28.1 · From the Official MCP registry, read 24 Oct 2026 · Format checked against ChatGPT's config docs

Recipes come from the server's entry in the official MCP registry. Check the package name before you run it, and keep keys out of shared files.

Works with

What dat999zx/knowl connects to

6 clients, each with how we know and when we checked.

Works with	Type	How we know	Checked
Claude Code	Client	Install recipe matches the client's documented formatRemote server, version 5.28.1Config checked	24 Oct 2026Claude Code docs
Claude Desktop	Client	Install recipe matches the client's documented formatRuns locally, version 5.28.1Config checked	24 Oct 2026Claude Desktop docs
Cursor	Client	Install recipe matches the client's documented formatRemote server, version 5.28.1Config checked	24 Oct 2026Cursor docs
VS Code	Client	Install recipe matches the client's documented formatRemote server, version 5.28.1Config checked	24 Oct 2026VS Code docs
Codex	Client	Install recipe matches the client's documented formatRemote server, version 5.28.1Config checked	24 Oct 2026Codex docs
ChatGPT	Client	Install recipe matches the client's documented formatRemote server, version 5.28.1Config checked	24 Oct 2026ChatGPT docs

Health and security

Is dat999zx/knowl looked after, and what do its setup files show

Security check static checks

100 out of 100

Reads what is published about the server: package advisories, licence, secrets in the documented setup and tool permissions. Nothing is installed or run, so this is not a security assessment. Checked 26 Oct 2026 by edna-static-v1 npm:@dat999zx/knowl@5.28.1. What it checks

Licence: Apache-2.0

Note The lab has not recorded this server's tool list yet, so tool permissions were not checked.

Alternatives

Alternatives to dat999zx/knowl

Record	Type	How we know	Checked
topoteretes/cogneeThis is an alternative to it	MCP server	Named in the listing	Not dated
vectorize-io/hindsightThis is an alternative to it	MCP server	Named in the listing	Not dated