Wave

Accounting and invoicing with Wave — API docs: https://developer.waveapps.com

Wave exposes a single GraphQL endpoint (https://gql.waveapps.com/graphql/public). This piece wraps the high-value operations as typed actions so you don't have to write GraphQL:

• Actions: List Businesses, Find Customers, Create Customer, Update Customer, List Products, Create Product, List Accounts, Create Invoice.
• Triggers: New Customer, New Invoice (both polling).

Connection: a Full Access Token from my.waveapps.com → avatar menu → Manage Applications → create an application → generate the token. Sent as Authorization: Bearer <token>.

Everything in Wave is scoped to a business, and Wave's ids are opaque base64 strings, so each action starts with a Business dropdown that lists the businesses your token can see.

Notes

• Mutations surface Wave's own inputErrors as a readable error when didSucceed is false, so a rejected create fails the step rather than passing an empty result downstream.
• No custom API call action. For arbitrary GraphQL against Wave, use the generic GraphQL piece with the same endpoint and Bearer token.
• No webhook triggers. Wave webhooks are registered against an OAuth application, not a Full Access Token, so this connection type polls instead. A future OAuth2 connection could add instant webhook triggers.