JustLabs Partner API

This guide covers everything a B2B lab-ordering partner needs to integrate with the JustLabs Partner API: authentication, browsing the catalog, creating and tracking orders, fetching requisitions and results, and consuming webhooks. The full request/response contract is in openapi.yaml (OpenAPI 3.1) alongside this file — treat this guide as the narrative walkthrough and the YAML as the source of truth for exact shapes and status codes.

All requests and responses are JSON. Money is always integer cents. Dates are ISO-8601. Errors always have the shape { "error": { "code": string, "message": string, "details"?: object } }.

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