GoCertius_MCP

# GoCertius MCP Server

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MCP server for GoCertius: certified evidence, dossiers, notifications and chats via AI agents.

## Quick start

```bash
npx -y @g-digital/mcp-gocertius
```

Or see [ONBOARDING.md](ONBOARDING.md) for a step-by-step setup guide (≤ 5 minutes).

## Where to install

This MCP is published to every major MCP distribution channel by the [g-digital MCP distribution pipeline](https://github.com/g-digital-by-Garrigues/MCP_Market_Distribution). Pick whichever fits your stack:

| Channel | Install command / URL |
|---|---|
| **npm** | `npx -y @g-digital/mcp-gocertius` — [npmjs.com/package/@g-digital/mcp-gocertius](https://www.npmjs.com/package/@g-digital/mcp-gocertius) |
| **Docker Hub** | `docker pull gdigital/gocertius:latest` — [hub.docker.com/r/gdigital/gocertius](https://hub.docker.com/r/gdigital/gocertius) |
| **MCP Official Registry** | Auto-discovered as `io.github.g-digital-by-Garrigues/gocertius` — [registry.modelcontextprotocol.io](https://registry.modelcontextprotocol.io/v0/servers/io.github.g-digital-by-Garrigues/gocertius) |
| **n8n community node** | Install `@g-digital/n8n-nodes-gocertius` in n8n Settings → Community Nodes — [npmjs.com/package/@g-digital/n8n-nodes-gocertius](https://www.npmjs.com/package/@g-digital/n8n-nodes-gocertius) |
| **Smithery** | `smithery mcp install g-digital/gocertius` — [smithery.ai/servers/g-digital/gocertius](https://smithery.ai/servers/g-digital/gocertius) |

Every channel ships the same MCP server contract; the tools and environment configuration below apply regardless of which install path you choose.

> Need credentials? Visit: [https://www.gocertius.io](https://www.gocertius.io)

## Installation

### Claude Desktop

```json
{
  "mcpServers": {
    "gocertius": {
      "args": [
        "-y",
        "@g-digital/mcp-gocertius"
      ],
      "command": "npx",
      "env": {
        "MCP_API_BASE_URL": "https://api-gocertius.gocertius.io",
        "MCP_AUTH_USER_KEY": "<PASTE_MCP_AUTH_USER_KEY_HERE>"
      }
    }
  }
}
```

> Need credentials? See: https://www.gocertius.io

### Claude Code (CLI)

```json
{
  "mcpServers": {
    "gocertius": {
      "args": [
        "-y",
        "@g-digital/mcp-gocertius"
      ],
      "command": "npx",
      "env": {
        "MCP_API_BASE_URL": "https://api-gocertius.gocertius.io",
        "MCP_AUTH_USER_KEY": "<PASTE_MCP_AUTH_USER_KEY_HERE>"
      }
    }
  }
}
```

> Need credentials? See: https://www.gocertius.io

### Cursor

```json
{
  "mcpServers": {
    "gocertius": {
      "args": [
        "-y",
        "@g-digital/mcp-gocertius"
      ],
      "command": "npx",
      "env": {
        "MCP_API_BASE_URL": "https://api-gocertius.gocertius.io",
        "MCP_AUTH_USER_KEY": "<PASTE_MCP_AUTH_USER_KEY_HERE>"
      }
    }
  }
}
```

> Need credentials? See: https://www.gocertius.io

### Windsurf

```json
{
  "mcpServers": {
    "gocertius": {
      "args": [
        "-y",
        "@g-digital/mcp-gocertius"
      ],
      "command": "npx",
      "env": {
        "MCP_API_BASE_URL": "https://api-gocertius.gocertius.io",
        "MCP_AUTH_USER_KEY": "<PASTE_MCP_AUTH_USER_KEY_HERE>"
      }
    }
  }
}
```

> Need credentials? See: https://www.gocertius.io

### Cline

```json
{
  "mcpServers": {
    "gocertius": {
      "args": [
        "-y",
        "@g-digital/mcp-gocertius"
      ],
      "command": "npx",
      "env": {
        "MCP_API_BASE_URL": "https://api-gocertius.gocertius.io",
        "MCP_AUTH_USER_KEY": "<PASTE_MCP_AUTH_USER_KEY_HERE>"
      }
    }
  }
}
```

> Need credentials? See: https://www.gocertius.io

### VS Code

```json
{
  "servers": {
    "gocertius": {
      "args": [
        "-y",
        "@g-digital/mcp-gocertius"
      ],
      "command": "npx",
      "env": {
        "MCP_API_BASE_URL": "https://api-gocertius.gocertius.io",
        "MCP_AUTH_USER_KEY": "<PASTE_MCP_AUTH_USER_KEY_HERE>"
      }
    }
  }
}
```

> Need credentials? See: https://www.gocertius.io

### JetBrains

```json
{
  "mcpServers": {
    "gocertius": {
      "args": [
        "-y",
        "@g-digital/mcp-gocertius"
      ],
      "command": "npx",
      "env": {
        "MCP_API_BASE_URL": "https://api-gocertius.gocertius.io",
        "MCP_AUTH_USER_KEY": "<PASTE_MCP_AUTH_USER_KEY_HERE>"
      }
    }
  }
}
```

> Need credentials? See: https://www.gocertius.io

### Zed

```json
{
  "mcpServers": {
    "gocertius": {
      "args": [
        "-y",
        "@g-digital/mcp-gocertius"
      ],
      "command": "npx",
      "env": {
        "MCP_API_BASE_URL": "https://api-gocertius.gocertius.io",
        "MCP_AUTH_USER_KEY": "<PASTE_MCP_AUTH_USER_KEY_HERE>"
      }
    }
  }
}
```

> Need credentials? See: https://www.gocertius.io

### Claude Desktop / Claude Code

Add to your `~/.claude.json` or `claude_desktop_config.json`:

```json
{
  "mcpServers": {
    "gocertius": {
      "command": "npx",
      "args": ["-y", "@g-digital/mcp-gocertius"],
      "env": {
        "MCP_AUTH_USER_KEY": "your-user-key",
        "MCP_API_BASE_URL": "https://api-gocertius.gocertius.io"
      }
    }
  }
}
```

### Docker

```bash
docker run --rm -i \
  -e MCP_AUTH_USER_KEY=your-user-key \
  -e MCP_API_BASE_URL=https://api-gocertius.gocertius.io \
  gdigital/gocertius:latest
```

## Environment Variables

| Name | Required | Secret | Description |
| --- | --- | --- | --- |
| `MCP_ALLOW_INSECURE_FILE_URL` | No | No | Set to "true" to allow plain http:// fileUrl downloads in evidence_create (default https-only). Private/internal addresses are rejected regardless (resolution-time check; see the documented DNS TOCTOU limitation in the hosted-deployment runbook). |
| `MCP_ALLOW_UNVERIFIED_BEARER` | No | No | Escape hatch for MCP_HTTP_PUBLIC=true WITHOUT inbound-token introspection: set to "true" ONLY when an upstream gateway already verifies Bearer tokens. The server logs a prominent warning and forwards tokens upstream unverified. |
| `MCP_ALLOWED_HOSTS` | No | No | Comma-separated allowed Host headers. Empty = Host validation disabled (default). When set, requests with a Host outside the list are rejected. |
| `MCP_ALLOWED_ORIGINS` | No | No | Comma-separated allowed browser Origins (DNS-rebinding defense). Empty = reject any request carrying an Origin header; non-browser clients (CLI/SDK) send no Origin and are always allowed. Use '*' to allow all. |
| `MCP_API_BASE_URL` | Yes | No | Upstream API root. Required: your user key is exchanged for a session token against this host, and the server will not start without it. |
| `MCP_AUTH_USER_KEY` | Yes | Yes | Long-lived GoCertius user key, exchanged automatically for a short-lived session token. Use it for headless or automated access instead of an account password. (See https://www.gocertius.io for credential acquisition.) |
| `MCP_HTTP_HOST` | No | No | Interface the HTTP transport binds to. Default 127.0.0.1 (localhost only). Set 0.0.0.0 to expose on all interfaces (containers do this automatically). |
| `MCP_HTTP_MAX_BODY_BYTES` | No | No | Maximum accepted POST /mcp request-body size in bytes (default 16777216 = 16 MiB — sized so base64 file uploads within the documented tool limits fit). Oversized requests get a 413 JSON-RPC error before/while reading — closes a memory-exhaustion DoS vector in public deployments. Note: base64 file sources are capped by this limit BEFORE MCP_FILE_MAX_BYTES applies. |
| `MCP_HTTP_PUBLIC` | No | No | Set to "true" for public/multi-tenant deployments. Activates Host validation and refuses to start unless (1) MCP_ALLOWED_ORIGINS or MCP_ALLOWED_HOSTS is set AND (2) inbound Bearer introspection is configured (MCP_SVC_INTROSPECT_URL + MCP_SVC_CLIENT_ID/SECRET) or MCP_ALLOW_UNVERIFIED_BEARER=true is set explicitly (fail-closed). |
| `MCP_SVC_CLIENT_ID` | No | No | Client ID this server presents to the introspection endpoint above (its resource-server credentials). Only needed alongside MCP_SVC_INTROSPECT_URL; it does not authenticate you to GoCertius. |
| `MCP_SVC_CLIENT_SECRET` | No | Yes | Client secret this server presents to the introspection endpoint above (its resource-server credentials). Only needed alongside MCP_SVC_INTROSPECT_URL; it does not authenticate you to GoCertius. (See https://www.gocertius.io for credential acquisition.) |
| `MCP_SVC_INTROSPECT_URL` | No | No | RFC 7662 token introspection URL for inbound Bearer verification in HTTP mode. Opt-in, and required when MCP_HTTP_PUBLIC=true. Leave empty for stdio (local) use. |
| `PORT` | No | No | HTTP port when running in hosted (HTTP) mode; ignored in stdio mode |

| Variable | Required | Description |
|---|---|---|
| `MCP_AUTH_USER_KEY` | Required | Long-lived user key (exchanged for a session token) |
| `MCP_OTEL_ENABLED` | Optional | Set to `true` to enable OpenTelemetry tracing |
| `MCP_API_BASE_URL` | Required | Upstream API root. The user-key exchange authenticates against it, so the server does not start without it |

## Bundled Skills

This package ships Claude Code slash-commands under `.claude/commands/`. After install, invoke them from Claude Code:

- `/getting-started` — step-by-step workflow guide
- `/evidence-lifecycle` — step-by-step workflow guide
- `/dossier-lifecycle` — step-by-step workflow guide
- `/notification-lifecycle` — step-by-step workflow guide
- `/notification-attachments` — step-by-step workflow guide
- `/chat-lifecycle` — step-by-step workflow guide

See [docs/agent-prompts.md](docs/agent-prompts.md) for