Connect MarketNewsAPI to ChatGPT
ChatGPT connects through a custom connector with OAuth sign-in.
The MCP server is part of Pro, including the 7-day trial. Server URL:
https://mcp.marketnewsapi.com/mcpSet it up
- In ChatGPT, open Settings → Apps & Connectors → Advanced settings and turn on Developer mode.
- Back in Apps & Connectors, choose Create.
- Name it MarketNewsAPI, set the MCP server URL to
https://mcp.marketnewsapi.com/mcpand authentication to OAuth. - Click Create, sign in to MarketNewsAPI and click Allow.
- In a new chat, add MarketNewsAPI from the + menu and ask away.
Custom connectors depend on your ChatGPT plan and workspace settings. Menu names change often; look for “Connectors” or “Apps”.
Try it
Ask something that needs current news, for example:
- “What's the latest news on NVDA and AAPL?”
- “Find press releases about semiconductor stocks from last week.”
- “Read the full Microsoft buyback press release and list the key numbers.”
- “Give me a briefing on what moved markets overnight.”
Or start from one of the built-in prompts, such as morning_briefing.
Troubleshooting
- 401 / “couldn't connect”: the key is wrong or revoked, or the OAuth sign-in didn't finish. Check your keys in the dashboard and reconnect.
- 403: the key belongs to a Free account. MCP needs Pro.
- Tools don't appear: restart the app after editing config files, and make sure the JSON is valid.
Other apps: Claude, Claude Desktop, Claude Code, Cursor, VS Code, Windsurf.