Express Scripts Holding

Express Scripts Partner APIs

The partner-facing API estate Express Scripts exposes through its own gateway. The production host api.express-scripts.io and the sandbox host api-sandbox.express-scripts.io both answer HTTP 401 to every anonymous request, including /.well-known/* paths, so the gateway authenticates before it routes. Both hosts were discovered in the developer portal's own deployed runtime configuration, where they are declared as hsGateway.gateway and apiSandbox.url. No OpenAPI, GraphQL SDL, AsyncAPI, Protobuf or WSDL is published for this estate at any anonymously reachable URL.

GitHub

Documentation

📖
Authentication
https://raw.githubusercontent.com/api-evangelist/express-scripts-holding/refs/heads/main/authentication/express-scripts-holding-authentication.yml

Other Resources

🔗
Sandbox
https://raw.githubusercontent.com/api-evangelist/express-scripts-holding/refs/heads/main/sandbox/express-scripts-holding-sandbox.yml
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/express-scripts-holding/refs/heads/main/apis.yml

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API entry from apis.yml

apis.yml Raw ↑ 
aid: express-scripts-holding-partner-apis
name: Express Scripts Partner APIs
description: The partner-facing API estate Express Scripts exposes through its own gateway. The production
  host api.express-scripts.io and the sandbox host api-sandbox.express-scripts.io both answer HTTP 401
  to every anonymous request, including /.well-known/* paths, so the gateway authenticates before it routes.
  Both hosts were discovered in the developer portal's own deployed runtime configuration, where they
  are declared as hsGateway.gateway and apiSandbox.url. No OpenAPI, GraphQL SDL, AsyncAPI, Protobuf or
  WSDL is published for this estate at any anonymously reachable URL.
humanURL: https://developer.express-scripts.com/service-apis
baseURL: https://api.express-scripts.io
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/express-scripts-holding.png
tags:
- Pharmacy Benefit Management
- Prescriptions
- Claims
- Healthcare
properties:
- type: Sandbox
  url: sandbox/express-scripts-holding-sandbox.yml
- type: Authentication
  url: authentication/express-scripts-holding-authentication.yml