How does an agent authenticate?

Create a key under Settings, then MCP. Send it as a bearer token to https://app.reachiz.com/mcp.

Is this the same as the API?

The MCP endpoint and the REST API cover the same product. The API key goes in the x-api-key header. The MCP key is a bearer token.

No. You connect a client that speaks MCP, such as Claude or Codex, to the endpoint above.

Developers

The MCP endpoint lets an agent call Reachiz. You create the key. There is no separate ChatGPT or Codex app to install.

1
In the app, open Settings, then MCP, and create a key.
2
Point the client at https://app.reachiz.com/mcp.
3
Send the key as a bearer token.
4
The REST API is the same product, at https://app.reachiz.com/api, with the key in the x-api-key header.

Search, lists, enrichment, campaigns, inbox and billing routes that the API exposes are what an MCP client can call.

Revoke it from Settings and the client stops. A new key does not keep the old one alive.

MCP is a pull interface. Campaign events still push through webhooks, Slack, Zapier or Make.

: Create a key under Settings, then MCP. Send it as a bearer token to https://app.reachiz.com/mcp.
: The MCP endpoint and the REST API cover the same product. The API key goes in the x-api-key header. The MCP key is a bearer token.
: No. You connect a client that speaks MCP, such as Claude or Codex, to the endpoint above.

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