CONN
ECT.

Six tools · one address · no key

Your AI tool, your voice

Write posts in your voice from any AI tool.

Add bigcorp to Claude, ChatGPT, Codex, Cursor or any tool that speaks MCP, then ask it for a post in a voice from your cast. You need a bigcorp login with a voice in its cast; if you don't have one yet, get in touch.

Server address

https://mcp.bigcorp.ai/mcp

01 / Setup

Pick your tool.

Each tool signs in to bigcorp once, in your browser: sign in, then choose Allow. You can disconnect a tool at any time under Connected apps on your account page.

Claude Code

Add the server from your shell:

claude mcp add --transport http bigcorp https://mcp.bigcorp.ai/mcp

Sign in by running this in a Claude Code session and choosing bigcorp:
```
/mcp
```
Or run this in your shell:
```
claude mcp login bigcorp
```
Your browser opens. Sign in to bigcorp and choose Allow.

Claude (claude.ai and Claude Desktop)

Open Customize, then Connectors. Choose + Add, then Add custom connector.
Give it a name, such as bigcorp, and paste the address:
```
https://mcp.bigcorp.ai/mcp
```
Keep the sign-in Claude detects and, under OAuth client, choose Register automatically.
Choose Add, then sign in to bigcorp and choose Allow.

On Team and Enterprise plans, an Owner adds the connector under Organization settings, Connectors, and each member then connects it.

ChatGPT

Go to chatgpt.com/plugins, choose the plus button, then Add custom MCP server.
Give it a name and paste the address, ending in /mcp:
```
https://mcp.bigcorp.ai/mcp
```
Choose OAuth for authentication.
Choose I understand and want to continue, then Create as a plugin.
The first time ChatGPT calls bigcorp it opens the sign-in. Sign in and choose Allow.

Codex

Add the server from your shell:

codex mcp add bigcorp --url https://mcp.bigcorp.ai/mcp

Sign in:
```
codex mcp login bigcorp
```
Your browser opens. Sign in to bigcorp and choose Allow.

In the ChatGPT desktop app or the Codex IDE extension, choose Authenticate beside bigcorp in the MCP server list instead.

Cursor

Add this entry to ~/.cursor/mcp.json, inside mcpServers if the file already has one:

{
  "mcpServers": {
    "bigcorp": {
      "url": "https://mcp.bigcorp.ai/mcp"
    }
  }
}

The first time Cursor uses bigcorp it asks you to Authenticate. Sign in to bigcorp and choose Allow.

Cursor lists its servers on its Customize page, where you can turn bigcorp off or remove it.

Other tools

Address: https://mcp.bigcorp.ai/mcp
Transport: Streamable HTTP
Sign-in: OAuth 2.1 with automatic client registration, so any tool that follows the MCP spec connects without a key.

CONNECT.