Add the hosted CitationBench MCP server to ChatGPT as a custom App. Three-minute install lets ChatGPT Plus, Pro, Enterprise, or Edu users call ~130 SEO and GEO tools.

Add the CitationBench MCP server to ChatGPT as an App. Three minutes.

Prerequisites

ChatGPT Plus / Pro / Enterprise / Edu (Apps require a paid plan)
A CitationBench API key — or just connect in demo mode without one
A workspace ID

In ChatGPT, click your profile → Apps → Add app.

Step 2 — Add a custom MCP server

Type: Custom MCP server
URL: https://mcp.citationbench.com/mcp
Authentication: Bearer token
- Token: sk_live_***
Custom headers:
- X-Workspace-Id: ws_***

For demo mode, leave the token field empty and skip the custom header.

Step 3 — Authorize permissions

ChatGPT will list the tools the server exposes (~130 of them) and ask you to authorize. Review and accept.

Step 4 — First tool call

In any conversation, ask:

Use citationbench to research keywords for project management software, fast depth, 50 results.

ChatGPT calls research.keyword.research and renders the result.

Notes specific to ChatGPT

Connector model: ChatGPT treats your MCP server as a single "connector." You can enable/disable it per conversation.
Per-conversation scoping: Some ChatGPT versions allow per-conversation tool subsets. You can keep citationbench always-on, or surface it only when relevant.
Approval: ChatGPT surfaces approval prompts for destructive tools. Workspace-level approval policies also apply.
Streaming: Long-running invocations stream progress via MCP notifications, which ChatGPT renders as a status indicator.

Debugging

Verify the API key at https://app.citationbench.com/api-keys
Try demo mode (omit token + header)
Inspect ChatGPT's connector logs (Settings → Apps → CitationBench → View logs)

What to try next

Catalog — every tool listed
Quickstart — MCP
Playbook · Build an SEO agent in Claude Code — same patterns work in ChatGPT

Setup the CitationBench MCP server as a ChatGPT App