Connecting MCP Clients to PipesHub MCP Server

This guide covers how to connect PipesHub's remote MCP server to Cursor, Claude Code, Gemini CLI, Claude.ai (Web), and LibreChat using static OAuth credentials.

PipesHub exposes a remote MCP endpoint over Streamable HTTP at /mcp.MCP Clients connect to this endpoint directly -- no local npm packages or stdio processes needed.

Looking for the tool reference? See TOOLS.md for descriptions, arguments, and a decision guide for each tool the MCP server exposes (pipeshub_chat, pipeshub_search, pipeshub_download_record, pipeshub_directory, pipeshub_sources).

Prerequisites

• A running PipesHub instance (self-hosted or cloud)
• An OAuth app created in PipesHub (see Step 1)

Step 1: Create an OAuth App in PipesHub

1. Log in to your PipesHub instance as an admin
2. Navigate to Settings > Developer Settings > OAuth Apps
3. Click Create OAuth App
4. Fill in the app details:

   • Name: e.g., MCP Integration

   • Redirect URIs: Add all the redirect URIs for the clients you plan to use:

     | Client | Redirect URI | |---|---| | Cursor | cursor://anysphere.cursor-mcp/oauth/callback | | Claude Code | http://localhost:<PORT>/callback (e.g., http://localhost:8080/callback) | | Claude.ai (Web) | https://claude.ai/api/mcp/auth_callback | | Gemini CLI | http://localhost:7777/oauth/callback | | LibreChat | http://localhost:3080/api/mcp/<server-identifier>/oauth/callback |

Important: The scopes in MCP_SCOPES must match the scopes granted to your OAuth app — a mismatch will result in an authorization error.

5. Save the app and copy the Client ID and Client Secret

Customizing Default Scopes

By default, PipesHub exposes some default scopes in its /.well-known/oauth-protected-resource/mcp discovery endpoint. You can customize which scopes are exposed by setting the MCP_SCOPES environment variable on your PipesHub instance. This is useful for clients like Claude Code that automatically request all exposed scopes.

Placeholders

Replace these in all configurations below:

| Placeholder | Description | Example | |---|---|---| | PIPESHUB_INSTANCE_URL | Your PipesHub instance URL | https://app.pipeshub.com | | YOUR_CLIENT_ID | OAuth app client ID | clid_abc123... | | YOUR_CLIENT_SECRET | OAuth app client secret | clsec_xyz789... |

The remote MCP endpoint URL is: PIPESHUB_INSTANCE_URL/mcp

Remote MCP Setup

Cursor supports static OAuth for remote MCP servers via the auth object in mcp.json.

Configuration

Open Cursor Settings > Tools and Integrations > New MCP Server, or edit your project's .cursor/mcp.json:

{
  "mcpServers": {
    "pipeshub": {
      "url": "PIPESHUB_INSTANCE_URL/mcp",
      "auth": {
        "CLIENT_ID": "YOUR_CLIENT_ID",
        "CLIENT_SECRET": "YOUR_CLIENT_SECRET",
        "scopes": [
          "org:read", "org:write", "org:admin",
          "user:read", "user:write", "user:invite", "user:delete",
          "usergroup:read", "usergroup:write",
          "team:read", "team:write",
          "kb:read", "kb:write", "kb:delete", "kb:upload",
          "semantic:read", "semantic:write", "semantic:delete",
          "conversation:read", "conversation:write", "conversation:chat",
          "agent:read", "agent:write", "agent:execute",
          "connector:read", "connector:write", "connector:sync", "connector:delete",
          "config:read", "config:write",
          "document:read", "document:write", "document:delete",
          "crawl:read", "crawl:write", "crawl:delete"
        ]
      }
    }
  }
}

Cursor will auto-discover the authorization and token endpoints via PipesHub's /.well-known/oauth-protected-resource/mcp metadata.

Note: If the scopes field is omitted, Cursor fetches /.well-known/oauth-protected-resource/mcp and requests all scopes_supported listed there. To limit access, explicitly list only the scopes you need. You can also control which scopes are exposed server-side — see Customizing Default Scopes.

Using Environment Variables

Use Cursor's ${env:VAR} interpolation to keep secrets out of config files:

{
  "mcpServers": {
    "pipeshub": {
      "url": "${env:PIPESHUB_INSTANCE_URL}/mcp",
      "auth": {
        "CLIENT_ID": "${env:PIPESHUB_CLIENT_ID}",
        "CLIENT_SECRET": "${env:PIPESHUB_CLIENT_SECRET}",
        "scopes": [
          "kb:read", "kb:write",
          "semantic:read", "semantic:write",
          "conversation:read", "conversation:write", "conversation:chat",
          "agent:read", "agent:write", "agent:execute",
          "connector:read", "connector:write",
          "config:read", "user:read"
        ]
      }
    }
  }
}

Redirect URI

Cursor uses a fixed redirect URI for all MCP servers:

cursor://anysphere.cursor-mcp/oauth/callback

Register this as the allowed redirect URI when creating the OAuth app in PipesHub.

OAuth Login Troubleshooting

If Cursor's internal browser fails to load the OAuth login page, copy the authorization URL from the internal browser and paste it into your normal browser to complete the login flow.

Claude Code supports remote HTTP MCP servers with static OAuth credentials via --client-id, --client-secret, and --callback-port.

PipesHub exposes discovery at /.well-known/oauth-protected-resource/mcp, so Claude Code auto-discovers the authorization and token endpoints.

Important: Claude Code does not support configuring specific scopes. It fetches /.well-known/oauth-protected-resource/mcp, reads the scopes_supported list, and requests all of them. Your OAuth app in PipesHub must have access to all scopes listed in the discovery endpoint, otherwise the authorization request will fail. To limit the exposed scopes, see Customizing Default Scopes.

Add with CLI

claude mcp add --transport http \
  --client-id YOUR_CLIENT_ID \
  --client-secret \
  --callback-port 8080 \
  pipeshub PIPESHUB_INSTANCE_URL/mcp

--client-secret without a value prompts for masked input. To skip the prompt, set the MCP_CLIENT_SECRET environment variable:

MCP_CLIENT_SECRET=YOUR_CLIENT_SECRET claude mcp add --transport http \
  --client-id YOUR_CLIENT_ID \
  --client-secret \
  --callback-port 8080 \
  pipeshub PIPESHUB_INSTANCE_URL/mcp

To make it available across all projects:

claude mcp add --transport http --scope user \
  --client-id YOUR_CLIENT_ID \
  --client-secret \
  --callback-port 8080 \
  pipeshub PIPESHUB_INSTANCE_URL/mcp

Add with JSON

claude mcp add-json pipeshub '{
  "type": "http",
  "url": "PIPESHUB_INSTANCE_URL/mcp",
  "oauth": {
    "clientId": "YOUR_CLIENT_ID",
    "callbackPort": 8080
  }
}' --client-secret

Project-Scoped (.mcp.json)

Create a .mcp.json file in your project root. This can be committed to version control (secrets stay out via env vars):

{
  "mcpServers": {
    "pipeshub": {
      "type": "http",
      "url": "${PIPESHUB_INSTANCE_URL}/mcp",
      "oauth": {
        "clientId": "${PIPESHUB_CLIENT_ID}",
        "callbackPort": 8080
      }
    }
  }
}

Set environment variables before launching Claude Code:

export PIPESHUB_INSTANCE_URL="https://app.pipeshub.com"
export PIPESHUB_CLIENT_ID="your-client-id"

Note: The client secret is stored in the system keychain, not in config files. You'll be prompted to enter it when you first authenticate via /mcp.

Authenticate

After adding the server, run /mcp inside Claude Code and follow the browser login flow. Tokens are stored securely and refreshed automatically.

Verify

claude mcp list
claude mcp get pipeshub

Gemini CLI supports remote MCP servers with OAuth via dynamic_discovery (the default), which auto-discovers authorization and token endpoints from PipesHub's /.well-known/oauth-protected-resource/mcp.

Option A: Settings File

Edit ~/.gemini/settings.json:

{
  "mcpServers": {
    "pipeshub": {
      "url": "PIPESHUB_INSTANCE_URL/mcp",
      "oauth": {
        "clientId": "YOUR_CLIENT_ID",
        "clientSecret": "YOUR_CLIENT_SECRET",
        "scopes": [
          "org:read", "org:write", "org:admin",
          "user:read", "user:write", "user:invite", "user:delete",
          "usergroup:read", "usergroup:write",
          "team:read", "team:write",
          "kb:read", "kb:write", "kb:delete", "kb:upload",
          "semantic:read", "semantic:write", "semantic:delete",
          "conversation:read", "conversation:write", "conversation:chat",
          "agent:read", "agent:write", "agent:execute",
          "connector:read", "connector:write", "connector:sync", "connector:delete",
          "config:read", "config:write",
          "document:read", "document:write", "document:delete",
          "crawl:read", "crawl:write", "crawl:delete"
        ]
      }
    }
  }
}

Note: Adjust the scopes list to match what your OAuth app was granted. If you only need a subset of tools, you can limit the scopes accordingly.

Option B: CLI Command

gemini mcp add --transport http pipeshub PIPESHUB_INSTANCE_URL/mcp

Then edit ~/.gemini/settings.json to add the oauth block as shown above.

Authenticate

Inside Gemini CLI, use the /mcp auth commands:

# List servers and their auth status
/mcp auth

# Authenticate with PipesHub (opens browser for login)
/mcp auth pipeshub

# Re-authenticate if tokens expire
/mcp auth pipeshub

On first connection, Gemini will automatically detect the 401 response, discover the OAuth endpoints, and open a browser for login. Tokens are stored securely in ~/.gemini/mcp-oauth-tokens.json and refreshed automatically.

Manage Servers

# List all configured servers
gemini mcp list

# Remove the server
gemini mcp remove pipeshub

# Temporarily disable/enable
gemini mcp disable pipeshub
gemini mcp enable pipeshub

OAuth Configuration Properties

| Property | Required | Description | |---|---|---| | clientId | Yes | OAuth 2.0 Client ID from PipesHub | | clientSecret | No | OAuth 2.0 Client Secret (for confidential clients) | | scopes | No | OAuth scopes to request | | authorizationUrl | No | Override authorization endpoint (auto-discovered by default) | | tokenUrl | No | Override token endpoint (auto-discovered by default) | | redirectUri | No | Override redirect URI (defaults to http://localhost:7777/oauth/callback) |

Note: OAuth requires a local browser. It will not work in headless environments, remote SSH without X11 forwarding, or containers without browser access.

Claude.ai supports custom connectors via remote MCP servers. This lets you use PipesHub tools directly in the Claude.ai web interface without any local setup.

Note: This feature is currently in beta. Free plan users are limited to one custom connector.

For Individual Users (Pro / Max Plans)

1. Go to claude.ai and navigate to Settings > Connectors
2. Click Add custom connector at the bottom of the Connectors section
3. Enter the MCP server URL:

   PIPESHUB_INSTANCE_URL/mcp

4. Click Advanced settings and enter your OAuth credentials:
   • OAuth Client ID: YOUR_CLIENT_ID
   • OAuth Client Secret: YOUR_CLIENT_SECRET
5. Click Add
6. You'll be redirected to PipesHub's login page to authenticate and grant permissions
7. After authenticating, the connector will be active and PipesHub tools will be available in your Claude.ai conversations

For Team / Enterprise Plans

Organization Owners must first add the connector:

1. Navigate to Organization settings > Connectors
2. Click Add custom connector
3. Enter the MCP server URL: PIPESHUB_INSTANCE_URL/mcp
4. Click Advanced settings and enter the OAuth Client ID and Client Secret
5. Click Add

Team members can then connect:

1. Go to Settings > Connectors
2. Find the PipesHub connector (marked with a "Custom" label)
3. Click Connect to authenticate via PipesHub's OAuth login

Redirect URI

Claude.ai uses the following redirect URI for OAuth:

https://claude.ai/api/mcp/auth_callback

Register this as an allowed redirect URI in your PipesHub OAuth app.

Security Notes

• Only connect to trusted MCP servers
• Review the permissions requested during the OAuth authentication flow
• Claude.ai interacts with PipesHub on your behalf using the granted OAuth token — your password is never shared

LibreChat supports remote MCP servers with OAuth authentication via its custom connectors UI. This lets you connect PipesHub tools to any model available in your LibreChat instance.

Configuration

1. Log in to your LibreChat instance
2. Navigate to MCP Servers settings panel
3. Click Add to create a new custom MCP connector
4. Fill in the connector details:
   • Name: Pipeshub (or any name you prefer)
   • MCP Server URL: PIPESHUB_INSTANCE_URL/mcp
   • Transport: Select Streamable HTTPS
   • Authentication: Select OAuth
5. Enter your OAuth credentials:
   • Client ID: YOUR_CLIENT_ID
   • Client Secret: YOUR_CLIENT_SECRET
   • Authorization URL: PIPESHUB_INSTANCE_URL/api/v1/oauth2/authorize
   • Token URL: PIPESHUB_INSTANCE_URL/api/v1/oauth2/token
   • Scope: openid email (or additional scopes as needed)
6. Check I trust this application
7. Click Add to save the connector
8. After adding, LibreChat will generate a Redirect URI displayed in the connector settings panel (next to the copy button). It follows this format:

   http://localhost:3080/api/mcp/<server-identifier>/oauth/callback

9. Copy the Redirect URI and register it as an allowed redirect URI in your PipesHub OAuth app (see Step 1)
10. Return to the LibreChat connector and click Update to initiate the OAuth flow — you'll be redirected to PipesHub's login page to authenticate and grant permissions

Redirect URI

LibreChat generates the redirect URI after the connector is created. The URI follows this format:

http://localhost:3080/api/mcp/<server-identifier>/oauth/callback

Where <server-identifier> is the unique identifier assigned by LibreChat (visible at the top of the connector settings as "Unique Server Identifier"). You must copy this URI and add it to your PipesHub OAuth app's allowed redirect URIs before authenticating.

Note: If your LibreChat instance runs on a different host or port, the URI will reflect that (e.g., https://chat.example.com/api/mcp/pipeshub/oauth/callback).

Scopes

LibreChat allows you to specify the OAuth scopes in the Scope field. Use a space-separated list:

openid email

To request PipesHub-specific scopes, add them to the scope field:

openid email org:read kb:read kb:write semantic:read conversation:read conversation:write conversation:chat agent:read agent:execute

Note: The scopes you request must match the scopes granted to your OAuth app in PipesHub. See Customizing Default Scopes for details.

Local MCP Server (Stdio)

Instead of connecting to PipesHub's remote MCP endpoint, you can run the MCP server locally as a stdio process using the @pipeshub-ai/mcp npm package. This is useful when you prefer a local setup or need to work in environments where direct HTTP connections to the remote MCP endpoint aren't practical.

Prerequisites

• Node.js 18+ installed
• A PipesHub instance URL
• Authentication credentials: either a Bearer token (JWT) or OAuth Client ID + Secret

Placeholders

Replace these in all configurations below:

| Placeholder | Description | Example | |---|---|---| | PIPESHUB_INSTANCE_URL | Your PipesHub instance URL | https://app.pipeshub.com | | YOUR_BEARER_TOKEN | JWT Bearer token for authentication | eyJhbGci... | | YOUR_CLIENT_ID | OAuth app client ID | clid_abc123... | | YOUR_CLIENT_SECRET | OAuth app client secret | clsec_xyz789... |

Configure in Claude Desktop settings (claude_desktop_config.json):

{
  "mcpServers": {
    "pipeshub": {
      "command": "npx",
      "args": [
        "@pipeshub-ai/mcp",
        "start",
        "--server-url",
        "PIPESHUB_INSTANCE_URL",
        "--bearer-auth",
        "YOUR_BEARER_TOKEN"
      ]
    }
  }
}

With OAuth credentials:

{
  "mcpServers": {
    "pipeshub": {
      "command": "npx",
      "args": [
        "@pipeshub-ai/mcp",
        "start",
        "--server-url",
        "PIPESHUB_INSTANCE_URL",
        "--client-id",
        "YOUR_CLIENT_ID",
        "--client-secret",
        "YOUR_CLIENT_SECRET",
        "--token-url",
        "/api/v1/oauth2/token"
      ]
    }
  }
}

Open Cursor Settings > Tools and Integrations > New MCP Server, or edit your project's .cursor/mcp.json:

{
  "mcpServers": {
    "pipeshub": {
      "command": "npx",
      "args": [
        "@pipeshub-ai/mcp",
        "start",
        "--server-url",
        "PIPESHUB_INSTANCE_URL",
        "--bearer-auth",
        "YOUR_BEARER_TOKEN"
      ]
    }
  }
}

With OAuth credentials:

{
  "mcpServers": {
    "pipeshub": {
      "command": "npx",
      "args": [
        "@pipeshub-ai/mcp",
        "start",
        "--server-url",
        "PIPESHUB_INSTANCE_URL",
        "--client-id",
        "YOUR_CLIENT_ID",
        "--client-secret",
        "YOUR_CLIENT_SECRET",
        "--token-url",
        "/api/v1/oauth2/token"
      ]
    }
  }
}

claude mcp add pipeshub -- npx -y @pipeshub-ai/mcp start \
  --server-url PIPESHUB_INSTANCE_URL \
  --bearer-auth YOUR_BEARER_TOKEN

With OAuth credentials:

claude mcp add pipeshub -- npx -y @pipeshub-ai/mcp start \
  --server-url PIPESHUB_INSTANCE_URL \
  --client-id YOUR_CLIENT_ID \
  --client-secret YOUR_CLIENT_SECRET \
  --token-url /api/v1/oauth2/token

gemini mcp add pipeshub -- npx -y @pipeshub-ai/mcp start \
  --server-url PIPESHUB_INSTANCE_URL \
  --bearer-auth YOUR_BEARER_TOKEN

With OAuth credentials:

gemini mcp add pipeshub -- npx -y @pipeshub-ai/mcp start \
  --server-url PIPESHUB_INSTANCE_URL \
  --client-id YOUR_CLIENT_ID \
  --client-secret YOUR_CLIENT_SECRET \
  --token-url /api/v1/oauth2/token

Open Command Palette > MCP: Open User Configuration, then add:

{
  "mcpServers": {
    "pipeshub": {
      "command": "npx",
      "args": [
        "@pipeshub-ai/mcp",
        "start",
        "--server-url",
        "PIPESHUB_INSTANCE_URL",
        "--bearer-auth",
        "YOUR_BEARER_TOKEN"
      ]
    }
  }
}

Open Windsurf Settings > Cascade > Manage MCPs > View raw config, then add:

{
  "mcpServers": {
    "pipeshub": {
      "command": "npx",
      "args": [
        "@pipeshub-ai/mcp",
        "start",
        "--server-url",
        "PIPESHUB_INSTANCE_URL",
        "--bearer-auth",
        "YOUR_BEARER_TOKEN"
      ]
    }
  }
}

To run the local MCP server from a cloned repository instead of the npm package:

git clone https://github.com/pipeshub-ai/pipeshub-ai.git
cd pipeshub-ai
npm install
npm run build
node ./bin/mcp-server.js start --server-url PIPESHUB_INSTANCE_URL --bearer-auth YOUR_BEARER_TOKEN

For MCP client configuration, replace npx @pipeshub-ai/mcp with node ./bin/mcp-server.js:

{
  "mcpServers": {
    "pipeshub": {
      "command": "node",
      "args": [
        "./bin/mcp-server.js",
        "start",
        "--server-url",
        "PIPESHUB_INSTANCE_URL",
        "--bearer-auth",
        "YOUR_BEARER_TOKEN"
      ]
    }
  }
}

To debug with MCP Inspector:

npx @modelcontextprotocol/inspector node ./bin/mcp-server.js start --server-url PIPESHUB_INSTANCE_URL --bearer-auth YOUR_BEARER_TOKEN

CLI Help

For a full list of server arguments:

npx @pipeshub-ai/mcp --help

How It Works

Architecture

AI Client (Cursor / Claude Code / Gemini CLI / Claude.ai / LibreChat)
        │
        │  HTTP POST (JSON-RPC)
        │  Authorization: Bearer <token>
        ▼
  PIPESHUB_INSTANCE_URL/mcp
        │
        │  StreamableHTTP Transport
        │  (stateless, per-request MCP server)
        ▼
  PipesHub API (curated tool set — see TOOLS.md)

OAuth Protected Resource Discovery

PipesHub exposes OAuth protected resource discovery at:

PIPESHUB_INSTANCE_URL/.well-known/oauth-protected-resource/mcp

This returns all OAuth endpoints automatically:

• Authorization: PIPESHUB_INSTANCE_URL/api/v1/oauth2/authorize
• Token: PIPESHUB_INSTANCE_URL/api/v1/oauth2/token
• Revocation: PIPESHUB_INSTANCE_URL/api/v1/oauth2/revoke
• JWKS: PIPESHUB_INSTANCE_URL/.well-known/jwks.json

Troubleshooting

"Incompatible auth server: does not support dynamic client registration"

This means the client is trying dynamic registration instead of using your pre-configured credentials. Make sure you passed --client-id and --client-secret (Claude Code) or the auth object (Cursor) correctly.

Authentication fails / redirect error

• Ensure the Redirect URI in your OAuth app matches exactly what the client uses:
  • Cursor: cursor://anysphere.cursor-mcp/oauth/callback
  • Claude Code: http://localhost:<callbackPort>/callback
  • Claude.ai: https://claude.ai/api/mcp/auth_callback
  • Gemini CLI: http://localhost:7777/oauth/callback
  • LibreChat: http://localhost:3080/api/mcp/<server-identifier>/oauth/callback
• Make sure the OAuth app is active (not suspended) in PipesHub

Cannot reach MCP endpoint

• Verify the endpoint is accessible: curl -X POST PIPESHUB_INSTANCE_URL/mcp (should return 401, not connection error)
• Check that your PipesHub instance has MCP enabled

Debugging with MCP Inspector

npx @modelcontextprotocol/inspector

Then connect to PIPESHUB_INSTANCE_URL/mcp with a Bearer token to test the endpoint directly.

FAQ

1. Update the MCP_SCOPES environment variable on your PipesHub instance to include the new scopes you want exposed via the discovery endpoint.
2. Update the OAuth app scopes in PipesHub: go to Settings > Developer Settings > OAuth Apps, select your OAuth app, and add or remove scopes as needed.
3. Re-authenticate the client — existing tokens carry the old scopes, so you need to re-authenticate to get a new token with the updated scopes. For example:
   • Cursor: Remove and re-add the MCP server, or clear the cached OAuth token and reconnect.
   • Claude Code: Run /mcp and complete the browser login flow again.
   • Gemini CLI: Run /mcp auth pipeshub to re-authenticate.
   • Claude.ai: Disconnect and reconnect the connector in Settings > Connectors.