# nan-forget

Stores project facts and decisions locally, then brings relevant context into later coding sessions. Useful when an agent keeps losing track of past work.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 5
- Author: NaNMesh
- License: not stated · policy=link-only · description only; the file stays with the author
- Source: https://github.com/NaNMesh/nan-forget
- Updated: 2026-04-06
- HTML: https://affpapa.org/en/nevibecode/mcp/nan-forget

## What it does

nan-forget stores project decisions, preferences, and facts in SQLite, then retrieves relevant context in later sessions. Its database at `~/.nan-forget/memories.db` is shared across projects and tools, with sqlite-vec used for search. In Claude Code, hooks retrieve context when you send a message, capture `.md` file writes, and scan the conversation when a session ends.

For Codex, setup creates an `AGENTS.md` file with memory instructions; CLI commands and a REST API at `localhost:3456` are also available. Running `npx nan-forget setup` opens a wizard that configures Ollama, embeddings, Claude Code hooks, and MCP. One setup detail matters: the Claude Code MCP command requires `OPENAI_API_KEY`, while the setup wizard is described as a local installation.

## Requirements
- Needs: Node.js (commands run via npx)
- Environment variables: `OPENAI_API_KEY`, `NAN_FORGET_EMBEDDING_PROVIDER`, `NAN_FORGET_USER_ID`, `NAN_FORGET_PROJECT_ROOT` — keys and tokens: ask the human for the values, never commit them or put them in shared files.

## Install

### Claude Code (native platform)

**Platform CLI**
```bash
claude mcp add --env OPENAI_API_KEY=<OPENAI_API_KEY> --env NAN_FORGET_EMBEDDING_PROVIDER=<NAN_FORGET_EMBEDDING_PROVIDER> --env NAN_FORGET_USER_ID=<NAN_FORGET_USER_ID> --env NAN_FORGET_PROJECT_ROOT=<NAN_FORGET_PROJECT_ROOT> --transport stdio nan-forget -- npx -y nan-forget
```
Replace <…> with your own values

### Codex

**Platform CLI**
```bash
codex mcp add nan-forget --env OPENAI_API_KEY=<OPENAI_API_KEY> --env NAN_FORGET_EMBEDDING_PROVIDER=<NAN_FORGET_EMBEDDING_PROVIDER> --env NAN_FORGET_USER_ID=<NAN_FORGET_USER_ID> --env NAN_FORGET_PROJECT_ROOT=<NAN_FORGET_PROJECT_ROOT> -- npx -y nan-forget
```
Replace <…> with your own values

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "nan-forget": {
            "command": "npx",
            "args": [
                "-y",
                "nan-forget"
            ],
            "env": {
                "OPENAI_API_KEY": "<OPENAI_API_KEY>",
                "NAN_FORGET_EMBEDDING_PROVIDER": "<NAN_FORGET_EMBEDDING_PROVIDER>",
                "NAN_FORGET_USER_ID": "<NAN_FORGET_USER_ID>",
                "NAN_FORGET_PROJECT_ROOT": "<NAN_FORGET_PROJECT_ROOT>"
            }
        }
    }
}
```
Replace <…> with your own values

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "nan-forget": {
            "type": "stdio",
            "command": "npx",
            "args": [
                "-y",
                "nan-forget"
            ],
            "env": {
                "OPENAI_API_KEY": "<OPENAI_API_KEY>",
                "NAN_FORGET_EMBEDDING_PROVIDER": "<NAN_FORGET_EMBEDDING_PROVIDER>",
                "NAN_FORGET_USER_ID": "<NAN_FORGET_USER_ID>",
                "NAN_FORGET_PROJECT_ROOT": "<NAN_FORGET_PROJECT_ROOT>"
            }
        }
    }
}
```
Replace <…> with your own values

### Gemini CLI

**Platform CLI**
```bash
gemini mcp add -e OPENAI_API_KEY=<OPENAI_API_KEY> -e NAN_FORGET_EMBEDDING_PROVIDER=<NAN_FORGET_EMBEDDING_PROVIDER> -e NAN_FORGET_USER_ID=<NAN_FORGET_USER_ID> -e NAN_FORGET_PROJECT_ROOT=<NAN_FORGET_PROJECT_ROOT> nan-forget npx -y nan-forget
```
Replace <…> with your own values

## When to use it
- carry project decisions into a new session
- retrieve context from earlier conversations
- search shared memory across projects
- give Codex instructions for using project memory

## Example prompts
- Remember that this project uses Clerk for authentication, not a custom JWT.
- Find the authentication decisions from our earlier sessions.
- Load context from previous sessions for this project.

## Similar
- [REA](https://affpapa.org/en/nevibecode/mcp/rea.md) — MCP server · ★ 392262
- [GitHub](https://affpapa.org/en/nevibecode/mcp/github.md) — MCP server · ★ 33989
- [Netdata](https://affpapa.org/en/nevibecode/mcp/netdata.md) — MCP server · ★ 81163
- [browser-use](https://affpapa.org/en/nevibecode/mcp/browser-use.md) — MCP server · ★ 119231
- [Codebase Memory](https://affpapa.org/en/nevibecode/mcp/codebase-memory.md) — MCP server · ★ 47577
- [mcp-server](https://affpapa.org/en/nevibecode/mcp/mcp-server.md) — MCP server · ★ 43902

---
NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md