Express Scripts Holding

aid: express-scripts-holding
name: Express Scripts Holding
description: 'Express Scripts is a pharmacy benefit management (PBM) company, now part of Cigna''s Evernorth Health Services,
  that processes prescription claims and provides home delivery and specialty pharmacy services for clients including health
  plans, employers and government programs. Express Scripts runs a real partner API estate — a production gateway at api.express-scripts.io,
  a separate sandbox gateway at api-sandbox.express-scripts.io, and its own OAuth 2.0 / OpenID Connect authorization server
  on an Express Scripts Okta tenant that serves live discovery documents anonymously. No API contract is published publicly:
  the developer portal renders client-side, its content backend refuses anonymous requests, and the portal''s own configuration
  sets public-specs to false, so specifications are visible only to approved partners after sign-in.'
kind: contract
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Partner-contracted APIs on a first-party gateway; no public licence or product terms on record
  confidence: low
  source:
  - https://api.express-scripts.io
  generated: '2026-09-07'
  method: probed
accessModel:
  pricing: contract
  onboarding: approval
  trial: false
  try_now: false
  public: false
  label: Partner approval required — no self-serve registration and no published pricing
  confidence: medium
  source:
  - https://developer.express-scripts.com/
  generated: '2026-09-07'
  method: probed
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/express-scripts-holding.png
tags:
- Health
- Healthcare
- Pharmacy
- Pharmacy Benefit Management
- Prescriptions
- Claims
- Fortune 100
url: https://raw.githubusercontent.com/api-evangelist/express-scripts-holding/refs/heads/main/apis.yml
created: '2026-03-24'
modified: '2026-10-06'
position: Producing
access: 3rd-Party
specificationVersion: '0.23'
apis:
- aid: express-scripts-holding: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
common:
- url: https://www.express-scripts.com/pharmacy/blog
  type: Blog
- type: WellKnown
  url: well-known/express-scripts-holding-well-known.yml
- type: Authentication
  url: authentication/express-scripts-holding-authentication.yml
- type: OAuthScopes
  url: scopes/express-scripts-holding-scopes.yml
- type: Conformance
  url: conformance/express-scripts-holding-conformance.yml
- type: Compliance
  url: security/express-scripts-holding-trust-center.yml
- type: Security
  url: security/express-scripts-holding-vulnerability-disclosure.yml
- type: Sandbox
  url: sandbox/express-scripts-holding-sandbox.yml
- type: Lifecycle
  url: lifecycle/express-scripts-holding-lifecycle.yml
- type: Plans
  url: plans/express-scripts-holding-plans-pricing.yml
- type: RateLimits
  url: rate-limits/express-scripts-holding-rate-limits.yml
- type: Packages
  url: packages/express-scripts-holding-packages.yml
- type: LLMsTxt
  url: llms/express-scripts-holding-llms.txt
- type: TrustCenter
  url: security/express-scripts-holding-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/express-scripts-holding-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/express-scripts-holding-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/ExpressScripts
- type: LinkedIn
  url: https://www.linkedin.com/company/express-scripts
- type: Website
  url: https://www.express-scripts.com
- type: DeveloperPortal
  url: https://developer.express-scripts.com/
- type: TermsOfService
  url: https://www.express-scripts.com/terms-of-use
- type: PrivacyPolicy
  url: https://www.evernorth.com/privacy-policy
- type: Support
  url: https://www.express-scripts.com/contact-us
- type: HelpCenter
  url: https://www.express-scripts.com/frequently-asked-questions
- type: ParentCompany
  url: https://www.evernorth.com/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-09-07'
  status: enriched
  artifacts_added: 16
  pass: local-v3
x-coverage:
  state: gated
  reason: partner-login
  detail: 'Express Scripts runs a real API estate, but its developer portal ships the flag "public-specs": false in its own
    deployed configuration and its content backend at p-developer-portal.digitaledge.cigna.com answers {"message":"Missing
    Authentication Token"} with HTTP 403 on every path, so no specification is reachable without an approved partner account.'
  evidence:
  - url: https://p-developer-portal.digitaledge.cigna.com/specs
    status: 403
  - url: https://developer.express-scripts.com/service-apis
    status: 200
  - url: https://api.express-scripts.io/
    status: 401
  - url: https://p.login.developer.express-scripts.com/oauth2/default/.well-known/openid-configuration
    status: 200
  checked: '2026-09-07'