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Highnote Spend Controls & Collaborative Authorization API

Attach spend rules and velocity rules to card products and financial accounts to govern where, when, and how much can be spent, and register a collaborative-authorization endpoint (addCollaborativeAuthorizationEndpoint, activateCollaborativeAuthorizationEndpoint) so your own service participates in real-time authorization decisions, returning approve or decline responses on each card authorization within the network timeout window. Enables programmable risk and controls on top of the single GraphQL platform.

Highnote Spend Controls & Collaborative Authorization API is one of 7 APIs that Highnote publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Spend Controls, Velocity Rules, Collaborative Authorization, Real-time Decisioning, and Risk. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 1 operation across 1 path, and defines 3 schemas. It is described by OpenAPI 3.0.1, at version 1.0.

Requests are made against 2 base URLs: https://api.us.highnote.com, https://api.us.test.highnote.com.

1 operations 1 paths 3 schemas 1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.1
API Version
1.0
Base URL
https://api.us.highnote.com/graphql
Authentication
HTTP Basic
Contact
Terms of Service
Resource Areas
1

Authentication & Security 1

Highnote Spend Controls & Collaborative Authorization API declares 1 security scheme for authenticating requests. It accepts HTTP basic authentication (basicAuth). By default, every request must be authenticated.

  • basicAuth — HTTP Basic auth. The base64-encoded API key is supplied as the username and the password is left empty. Equivalent to sending Authorization: Basic .

Paths & Operations 1

Across 1 path, the API surfaces 1 operation — 1 POST. Each is listed below with its method, path, parameters, and response codes.

GraphQL 1

Single GraphQL endpoint for all Highnote operations.

POST
/graphql
Execute a GraphQL query or mutation
postGraphql body → 200401429

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are GraphQLError (3 properties), GraphQLRequest (3 properties), GraphQLResponse (2 properties). Each schema is shown below with its type and property counts.

GraphQLRequest
object
3 properties 1 required
GraphQLResponse
object
2 properties
GraphQLError
object
3 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

highnote-graphql-api-openapi.yml Raw ↑

Other APIs Highnote publishes across the network.

Highnote Issuing API
Highnote Account Holders & Onboarding API
Highnote Acquiring API
Highnote Money Movement API
Highnote Transactions & Disputes API
Highnote Webhooks & Event Notifications API