Connect ChatGPT to Meltwater MCP
Use Meltwater from ChatGPT Apps, including research in a normal chat. Every client connects to the same Meltwater MCP server, so the URL and sign-in are the same wherever you use it.
Meltwater is listed in ChatGPT Apps. Install it from the listing, or add Meltwater as a custom app in developer mode using the steps below. Both use the same server and the same Meltwater sign-in.
Connection details
| Setting | Value |
|---|---|
| Server URL | https://api.meltwater.com/v2/mcp |
| Transport | Streamable HTTP |
| Authentication | OAuth sign-in at app.meltwater.com, or a Meltwater API token in the apikey header |
Before you start
- A Meltwater account with access to Meltwater MCP.
- The server URL, exactly
https://api.meltwater.com/v2/mcp, with no trailing slash. - Developer mode. OpenAI says availability depends on the account and workspace policy.
Connect
1. Install the Meltwater app
Open Settings, then Apps, search for Meltwater and install it. If you would rather add Meltwater as a custom app, follow OpenAI's developer-mode steps below instead.
2. Or create a custom app in developer mode
- Open Settings, then Security and login, and turn on Developer mode. If the toggle isn't there, check Apps or Connectors, then Advanced settings - OpenAI has moved this control before.
- Open ChatGPT Plugins, select the + button, and enter a name and description.
- Under Connection, paste the MCP server URL below, including
/mcp. - Create the connection and review the tools ChatGPT discovers. Finish the Meltwater sign-in if ChatGPT opens it.
https://api.meltwater.com/v2/mcp
3. Authenticate
Use either a browser sign-in or a Meltwater API token.
- Browser sign-in (OAuth) - if the client opens a browser, sign in with your Meltwater account. The server publishes OAuth metadata for
https://app.meltwater.com, including dynamic client registration, so you don't need to register a client. Leave the client ID and client secret empty if the form marks them as optional. - API token - for a custom agent, or a client that only offers a header field, send your Meltwater API token in a header named
apikey. This is the method used in Building agents with Meltwater MCP. See API Credentials to create a token.
Treat your API token like a password. Keep it in an environment variable or a secrets manager - never in the URL, in client-side code, or in source control.
A request with no credential returns 401 with the body no bearer token. A rejected apikey value returns {"message":"Unauthorized"}.
4. Confirm the tool list
Open a new conversation and ask the assistant to list the Meltwater tools it can call.
An empty list means either the account can't see any tools, or the client is still using a failed connection. After you fix authentication, start a new chat so the client runs initialize again.
Check the connection
Once the server shows as connected, paste this prompt into a new conversation. It only uses tools the client has actually listed.
I just connected Meltwater. Use the Meltwater MCP tools if they are available.
1. Confirm the connection by listing the tools you can call. If none are listed, say so and stop.
2. Ask me which brand, company, or topic to brief if I have not named one.
3. Use the available tools to pull recent coverage and the main narratives. Cite the source and date for each material fact the tools return.
4. Return a short briefing: what is being said, what changed, what is unresolved, and one recommended next action.
5. Before calling a tool, check its schema. Ask only for missing inputs, in a single message, then name the tools you will call.
Use the Tools Explorer to browse the tools available to your account - each tool's name, description and parameters - without connecting a client.
If it does not connect
The URL is rejected
Use HTTPS and the exact URL https://api.meltwater.com/v2/mcp. A trailing slash, an http:// scheme, or any other Meltwater URL won't reach the server.
The client only offers SSE
Choose Streamable HTTP, which uses POST. An unauthenticated GET, POST or DELETE to the server URL returns 401 with the body no bearer token.
Tools stay empty after sign-in
Start a new chat so the client runs initialize and tools/list again. Check that the Meltwater account you signed in with has access to Meltwater MCP.
Still stuck?
Take a look at the FAQs, or contact our Support team.