# Eraser MCP server

> Generate, edit, search and export Eraser diagrams and docs from your AI assistant.

- Listing: https://mcp.tc/i/eraser
- Connect: use the server's own URL `https://app.eraser.io/api/mcp` (OAuth sign-in at the server); clients connect to it directly. The listing link is a page, not an MCP endpoint.
- Type: remote (Streamable HTTP)
- Auth: OAuth sign-in
- Category: [Design, Websites & CMS](https://mcp.tc/c/design)
- Vendor: Eraser
- Homepage: <https://www.eraser.io/>

## About

Connects an assistant to Eraser, a diagramming tool for technical teams. According to the vendor, it supports diagram create, search, update and export from clients such as Claude, Cursor and ChatGPT, and can ground diagrams in code and images.

The server is hosted at app.eraser.io over streamable HTTP. Users sign in with OAuth. The vendor's documentation also mentions API tokens and stdio transport for headless agents.

## What it can do

- Generate diagrams from text prompts
- Edit and update existing diagrams
- Search and manage diagrams and docs
- Export diagrams
- Ground diagrams in code and images

## Example prompts

- "Create a diagram of our AWS architecture with a load balancer, EKS and RDS"
- "Update my checkout flow diagram to add a fraud check step"
- "Search my Eraser workspace for diagrams about authentication"
- "Export the payments architecture diagram as an image"

## Install

### Claude Code

1. Run this in a terminal, in your project folder:

```bash
claude mcp add --transport http eraser https://app.eraser.io/api/mcp
```

2. Start Claude Code, type `/mcp`, pick **eraser** and choose **Authenticate**. A browser window opens for the Eraser sign-in.

Add `--scope user` to make it available in every project, not just this one.

### Claude Desktop

1. Open **Settings → Connectors** and click **Add custom connector**.

2. Name it **Eraser** and paste this URL:

```url
https://app.eraser.io/api/mcp
```

3. Click **Add**, then **Connect**, and sign in when Eraser asks.

Claude Desktop’s JSON config file only starts local servers. Remote servers go through Connectors, and connectors you add on claude.ai show up here too.

### claude.ai

1. Open the connector form on claude.ai. This button fills in the name and URL for you:

[Add to claude.ai](<https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Eraser&connectorUrl=https%3A%2F%2Fapp.eraser.io%2Fapi%2Fmcp>) (opens connector settings)

2. Check that the URL reads `https://app.eraser.io/api/mcp` and click **Add**.

3. Click **Connect** and sign in when Eraser asks.

Free plans allow one custom connector. On Team and Enterprise plans an owner adds it under **Organization settings → Connectors**.

### ChatGPT

1. On chatgpt.com, open **Settings → Security and login** and turn on **Developer mode**.

2. Go to `chatgpt.com/plugins` and click **+** to create an app for a remote MCP server.

3. Paste `https://app.eraser.io/api/mcp` as the server URL and choose **OAuth**. ChatGPT sends you to Eraser to sign in.

Developer mode is available on the web for Plus, Pro, Business, Enterprise and Education accounts.

### Cursor

[Add to Cursor](<https://cursor.com/install-mcp?name=eraser&config=eyJ1cmwiOiJodHRwczovL2FwcC5lcmFzZXIuaW8vYXBpL21jcCJ9>) (opens Cursor)

Or add it by hand to `~/.cursor/mcp.json` (all projects) or `.cursor/mcp.json` (this project):

`mcp.json`:

```json
{
  "mcpServers": {
    "eraser": {
      "url": "https://app.eraser.io/api/mcp"
    }
  }
}
```

Cursor shows **Needs login** next to the server. Click it to sign in.

### VS Code

[Install in VS Code](<https://vscode.dev/redirect/mcp/install?name=eraser&config=%7B%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fapp.eraser.io%2Fapi%2Fmcp%22%7D>) (opens VS Code)

Or from a terminal:

```bash
code --add-mcp '{"name":"eraser","type":"http","url":"https://app.eraser.io/api/mcp"}'
```

Or commit it to the repo in `.vscode/mcp.json`:

`.vscode/mcp.json`:

```json
{
  "servers": {
    "eraser": {
      "type": "http",
      "url": "https://app.eraser.io/api/mcp"
    }
  }
}
```

VS Code asks you to sign in the first time the server starts.

### Devin Desktop

1. Add it to `~/.config/devin/mcp_config.json` (macOS and Linux) or `%APPDATA%\devin\mcp_config.json` (Windows):

`mcp_config.json`:

```json
{
  "mcpServers": {
    "eraser": {
      "serverUrl": "https://app.eraser.io/api/mcp"
    }
  }
}
```

2. Refresh the MCP server list in Cascade and sign in when asked.

Devin Desktop is the new name for Windsurf. It reads `serverUrl` (or `url`) for remote servers.

### Codex

```bash
codex mcp add eraser --url https://app.eraser.io/api/mcp
codex mcp login eraser
```

Or edit `~/.codex/config.toml` directly:

`config.toml`:

```toml
[mcp_servers.eraser]
url = "https://app.eraser.io/api/mcp"
```

### Gemini CLI

```bash
gemini mcp add --transport http eraser https://app.eraser.io/api/mcp
```

Then, inside Gemini CLI, run `/mcp auth eraser` to sign in.

This adds it to the current project. Add `-s user` to use it everywhere.

### Any client

Most clients accept this shape. Some name the URL field differently: `serverUrl` in Devin Desktop, `httpUrl` in Gemini CLI’s settings file.

```json
{
  "mcpServers": {
    "eraser": {
      "type": "http",
      "url": "https://app.eraser.io/api/mcp"
    }
  }
}
```

Zed puts servers under `context_servers` in its settings. Cline needs `"type": "streamableHttp"`, or it assumes SSE.

Client only starts local servers? Bridge it with `npx -y mcp-remote https://app.eraser.io/api/mcp`.

## Details

- Server version: 0.2.0
- Last checked: 2026-10-03 (reachable, asks for credentials)
- Listed: 2026-10-03
- Updated: 2026-10-03

---
Source: https://mcp.tc/i/eraser (mcp.tc is an independent directory, not affiliated with this server's publisher). Corrections: https://mcp.tc/report