# Dev error explainers MCP server

> Provides deterministic explanations and concrete fixes for Node.js, npm, Next.js, CORS, and PostgreSQL errors without using an LLM or network.

- Repository: https://github.com/mahdibrr/dev-error-explainers
- Page: https://hostedmcp.org/servers/mahdibrr/dev-error-explainers
- Transport: stdio
- Stars: 0
- License: MIT
- Latest version: 0.2.1

## Install

### Claude Code

```sh
claude mcp add dev-error-explainers -- npx -y dev-error-explainers
```

### Cursor (`~/.cursor/mcp.json`)

```json
{
  "mcpServers": {
    "dev-error-explainers": {
      "command": "npx",
      "args": [
        "-y",
        "dev-error-explainers"
      ]
    }
  }
}
```

### VS Code (`.vscode/mcp.json`)

```json
{
  "servers": {
    "dev-error-explainers": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "dev-error-explainers"
      ]
    }
  }
}
```

### Claude Desktop (`claude_desktop_config.json`)

```json
{
  "mcpServers": {
    "dev-error-explainers": {
      "command": "npx",
      "args": [
        "-y",
        "dev-error-explainers"
      ]
    }
  }
}
```

### Codex (`~/.codex/config.toml`)

```toml
[mcp_servers.dev-error-explainers]
command = "npx"
args = ["-y", "dev-error-explainers"]
```

### Gemini CLI (`~/.gemini/settings.json`)

```json
{
  "mcpServers": {
    "dev-error-explainers": {
      "command": "npx",
      "args": [
        "-y",
        "dev-error-explainers"
      ]
    }
  }
}
```

## FAQ

### Does this server use an LLM or require an internet connection?

No, it operates entirely offline with no LLM, no API, no network, and no telemetry.

### How does the server handle sensitive information like passwords?

The server passes input through a redaction process before analysis, and database helpers return masked metadata and URL templates.

### What kind of errors can it diagnose?

It explains errors related to CORS, ESM/CJS module conflicts, npm peer-dependency issues, Next.js builds, and PostgreSQL connection strings.