Functions

RestAPI.com provides serverless functions that execute custom JavaScript code in response to events, on schedules, or via HTTP endpoints.

Function Types

Type	Trigger	Use Case
Trigger	Data changes (POST, PUT, PATCH, DELETE)	Validate, transform, sync data
Timer	Scheduled intervals	Background jobs, cleanup, reports
Invocable	HTTP requests to custom endpoints	Custom APIs, webhooks, integrations

Quick Comparison

Feature	Trigger	Timer	Invocable
Automatic execution	On data change	On schedule	Manual (HTTP call)
Collection monitoring	Yes	No	No
Custom HTTP endpoint	No	No	Yes
Access control	Via execution context	Via execution context	Role-based per method

Action Types

Functions can execute two types of actions:

Action	Description
JavaScript	Custom code executed in serverless containers
External Endpoint	Call an external webhook/HTTP endpoint

In This Section

• Trigger Functions — Execute on data changes
• Timer Functions — Execute on schedules
• Invocable Functions — Custom HTTP endpoints
• JavaScript Environment — Writing function code
• Testing Functions — Test and debug your functions