API Reference

Endpoints, request and response schemas, and postback payloads for the PayTomorrow API.

The PayTomorrow API is a JSON API over HTTPS. Every page in this section is generated from the OpenAPI 3.1 spec, so the reference always matches the spec.

Download OpenAPI spec

Base URLs

Environment	Base URL
Staging	`https://api-staging.paytomorrow.com/api`
Production	`https://api.paytomorrow.com/api`

Authentication

Get an access token from Get an access token, then send it on every request:

Authorization: Bearer <access_token>

See the authentication guide for caching and refresh.

Conventions

Request bodies are JSON with Content-Type: application/json, except the token endpoint, which is form-encoded.
Money is a number in US dollars, like 1149.97.
Field names are camelCase. Unknown fields are ignored, not rejected.
applicationToken in a path is the token returned when the application was created.
Errors return 417 with a JSON body. See Errors.