API Reference Introduction

Use this reference to find Signal REST API endpoints, request and response data structures, and examples organized by resource type.

What each reference page includes

Resource overview: A summary of the resource type and the related endpoints on that page.
Data definitions: Field-level details for request and response objects, including data types and example JSON when available.
Operations: Supported endpoints, paths, parameters, and example requests or responses for common use cases.

How APIs are grouped

Choose the API group that matches the data or workflow you need. Each section also notes whether the API is available in the Data Explorer web application.

Calculation APIs

Use these APIs for on-demand calculations such as bill matching, rate comparisons, what-if scenarios, and project economics.

Data Explorer: Partial (Only the On-demand Cost Calculator, not the Mass Calculator)
Signal API: Yes

Tariff APIs

Use these APIs to work with utility, tariff, TOU, calendar, and related data.

Data Explorer: Yes
Signal API: Yes

Other APIs

Use these APIs for additional data sets such as typical usage and property metadata.

Data Explorer: Partial (The typical usage data is available to use in the calculator, but not to browse in a UI)
Signal API: Yes