Search leads and contacts

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.

Note: The API returns only IDs unless you pass _fields. The MCP tool takes a plain-language query and pages with paginate_search.

Set up

Use the first option your agent supports.

MCP (official, remote)

Add this server to your agent's MCP settings, then sign in when asked.

{ "mcpServers": { "close": { "url": "https://mcp.close.com/mcp" } } }

Call the MCP tool search.

Server URL: https://mcp.close.com/mcp

API (official)

• Base URL: https://api.close.com/api/v1
• Endpoint: POST /data/search/
• 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.