Your customers spend their day inside AI tools now. The question isn't whether they'll ask an assistant to use your product — it's whether your product answers. Here's the practical, per-client playbook for making one MCP endpoint usable from all three major clients.
One endpoint, three doors
Everything below is the same server: a Streamable HTTP MCP endpoint with OAuth 2.1 discovery, per-customer auth, and typed tools. Only the last-mile packaging differs.
Claude (web & desktop)
- Customer: Settings → Connectors → Add custom connector → paste your MCP URL.
- Claude probes the endpoint, reads OAuth discovery metadata, registers itself (DCR), and opens your hosted connect screen.
- Customer authenticates with their own account; tools appear in the composer.
Watch out for: your CDN's AI-bot rules (Claude's traffic is honestly labelled and gets blocked by default configs) and CORS preflight headers — details in our real-client debugging writeup.
Cursor
- One click: a
cursor://anysphere.cursor-deeplink/mcp/installlink with the base64-encoded server config — put it on your connect page's success screen so the token is already embedded. - Config file: an entry in
~/.cursor/mcp.jsonfor teams that manage dotfiles. - Agent mode then lists your tools next to Cursor's own.
ChatGPT
- Customer enables connector development (Settings → Connectors → developer mode).
- Create connector → paste the MCP URL → choose OAuth.
- ChatGPT walks the same discovery + hosted connect flow and imports the tools.
Everyone else
VS Code (.vscode/mcp.json), MCP Inspector, and custom agents all take the raw URL + token. Keep that fallback visible — the long tail of MCP clients is growing monthly.
The distribution kit, generated
Wiring up all three clients is the mechanics. Getting found in the first place — directory listings, a dedicated page, the announcement loop — is the other half of the job.
FAQ
- How do customers add my product to Claude?
- Give them one MCP URL. In Claude (web or desktop): Settings → Connectors → Add custom connector → paste the URL. Claude discovers the OAuth flow automatically, opens your hosted connect screen, and imports your tools. Verified with Claude's production clients.
- How do customers add my product to Cursor?
- Two ways: a one-click cursor:// deep link (with the server config embedded) from your connect page, or an entry in ~/.cursor/mcp.json with your MCP URL. Both are generated for you by the Command+K dashboard.
- How do customers add my product to ChatGPT?
- ChatGPT supports custom MCP connectors (developer mode / connectors settings): create a connector, paste the MCP URL, choose OAuth — ChatGPT opens the hosted connect screen and imports the tools, verified with the real client.
- Do I need to build something different per client?
- No — that's the point of MCP. One spec-compliant Streamable HTTP endpoint with OAuth discovery serves Claude, Cursor, ChatGPT and VS Code alike. The per-client differences (deep links, config files, connector settings) are packaging, not server code.