Custom Extensions

Build custom integrations to connect your AI agents to any external service. Custom extensions let agents access real-time data, execute actions, and integrate with systems not covered by built-in integrations.

Extension Types

Type	Description	Plan
API Tools	Make HTTP requests to external services	Pro
MCP Servers	Connect via Model Context Protocol for complex integrations	Pro
Sheet Search	Search spreadsheet data in your knowledge base	All

When to Use Each Extension

Use API Tools when:

• You need to call a REST API endpoint

• The integration is straightforward request/response

• You're connecting to a single service

Use MCP Servers when:

• You need multiple related tools from one service

• You want to use pre-built MCP connectors (like Zapier)

• You're building complex integrations with programmatic control

Use Sheet Search when:

• Your data is in spreadsheets

• You need real-time access to tabular data

• Product catalogs, pricing tables, or structured lookups