---
ref: company:close
name: Close
tools: [tool:close/create-contact, tool:close/create-lead, tool:close/create-note, tool:close/search-leads, tool:close/subscribe-to-sequence]
tags: [capability:manage-crm, capability:send-email, category:crm, has:api, has:mcp]
updated: 2026-09-27
---

# Close

The CRM with a built-in AI teammate that calls leads, qualifies prospects, books meetings and keeps the CRM up to date.

In Close, the central record is the lead: a company or organization that
holds the contacts (people) you sell to, plus their opportunities, tasks and
activities such as calls, emails and notes.

The hosted MCP server signs in with OAuth and supports Dynamic Client
Registration. The scope granted at sign-in decides its tools: `mcp.read` only
reads, `mcp.write_safe` also creates records, and `mcp.write_destructive` also
updates and deletes them. The REST API uses HTTP Basic auth with an API key as
the username and an empty password, so `CLOSE_API_KEY` holds the base64 of
the key followed by a colon (`<key>:`). Keys are created per user and
organization in Close under Settings, Developer, API Keys.

## Tools

- tool:close/create-contact — Create a contact: Adds a person, with name, title, emails, phones and URLs, to a lead and returns the new contact.
- tool:close/create-lead — Create a lead: Creates a lead (a company) and returns it with its ID; over the API its contacts, addresses and custom fields can be created in the same call.
- tool:close/create-note — Create a note: Logs a note activity on a lead, optionally tied to one of its contacts.
- tool:close/search-leads — Search leads and contacts: Returns the leads or contacts that match a query, such as contacts with CTO in their title or leads not contacted in the past week.
- tool:close/subscribe-to-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.

## Links

- Website: https://close.com
- Docs: https://developer.close.com