Subscribe a contact to a sequence

Subscribe a contact to a sequence

Enrolls a contact in a sequence (workflow), whose timed email and call steps run until the contact replies.

Note: Starts real outbound email: confirm the sequence, sender and contact first. The MCP server has no tool for this call.

Set up

Use the first option your agent supports.

API (official)

• Base URL: https://api.close.com/api/v1
• Endpoint: POST /sequence_subscription/
• Auth: send the header Authorization: Basic $CLOSE_API_KEY
• Docs: https://developer.close.com/api/overview

Note: CLOSE_API_KEY holds the base64 of <api key>:, the key with a trailing colon.

Before anything else, confirm access with the cheapest read-only call, like a list or a search. Never send or change anything to test access.

Rules

• Ask the user before anything that sends messages, costs money, or changes data, and say how many records it touches. One approval covers a batch the user has seen.
• Never print API keys.