Waystar

aid: waystar
url: https://raw.githubusercontent.com/api-evangelist/waystar/refs/heads/main/apis.yml
name: Waystar
kind: company
description: Waystar is a healthcare payments and revenue cycle management (RCM) software company that operates a national
  clearinghouse connecting providers to payers. Its cloud platform spans financial clearance (eligibility, prior authorization,
  patient estimation), claim management, payment and remittance management, and denial prevention and recovery. Waystar exposes
  integration through REST APIs, web services, HL7, sFTP/batch, RPA, and X12 EDI transactions (270/271 eligibility, 276/277
  claim status, 837 claims, 835 remittance/ERA, 278 authorization). API access is delivered through a partner/developer program
  at developer.waystar.com; the portal renders its full documentation navigation to anyone but serves a login form in place
  of every document body, and sandbox accounts are provisioned by email rather than self-service. Waystar publishes no OpenAPI,
  no llms.txt, no MCP server, no agent card and no client SDK in any package registry. Authentication is six hand-rolled schemes
  rather than one - HMAC-SHA1 body signatures on the classic Developer Suite, HMAC-SHA256 Authorization headers on Patient
  Estimation, credentials in the POST body on the eligibility gateway, HTTP Basic, WS-Security UsernameToken inside CAQH CORE
  SOAP envelopes, and X.509 client certificates - with no OAuth 2.0 and no OpenID Connect anywhere. The API surface below
  is documented from Waystar's public product pages, its developer-portal structure and the underlying X12 standards rather
  than from a published machine-readable definition.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/waystar.png
tags:
- Healthcare
- Revenue Cycle Management
- RCM
- Clearinghouse
- Healthcare Payments
- Medical Billing
- X12 EDI
- Eligibility
- Claims
- Remittance
created: '2026-07-04'
modified: '2026-08-15'
specificationVersion: '0.23'
x-base-url-provenance: 'The baseURL on each API entry is the documented Waystar API host for that product, read from the Waystar
  developer portal and recorded in authentication/waystar-authentication.yml and conventions/waystar-conventions.yml. Several
  sit on zirmed.com rather than waystar.com: ZirMed is Waystar''s own legacy brand - Waystar was formed from the 2017 Navicure/ZirMed
  merger - and both zirmed.com and www.zirmed.com 301 to https://www.waystar.com/. Every host was verified on 2026-08-15 to
  resolve inside Waystar''s contiguous 69.2.x.x netblock and to answer HTTP. api.waystar.com is deliberately NOT used as a
  base: it answers every path with a 403 edge challenge and is not a documented API host. The Denial & Appeal Management API
  carries no baseURL because Waystar documents no host for it - an honest gap rather than a guess.'
apis:
- aid: waystar:waystar-eligibility-verification-api
  name: Waystar Eligibility Verification API
  tags:
  - Eligibility
  - Benefits
  - X12 270/271
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.waystar.com/our-platform/financial-clearance/eligibility-verification/
  baseURL: https://eligibilityapi.zirmed.com/1.0/
  properties:
  - url: https://developer.waystar.com/
    type: Documentation
  - url: authentication/waystar-authentication.yml
    type: Authentication
  - url: https://www.waystar.com/our-platform/financial-clearance/eligibility-verification/
    type: SignUp
  description: Real-time and batch insurance eligibility and benefits verification, exchanging X12 270 inquiries and 271 responses
    to confirm coverage, plan details, copays, deductibles, and service-type benefits before a visit. Endpoints are modeled
    from Waystar's Eligibility product and the 270/271 transaction set; concrete paths are provisioned through the partner
    program.
- aid: waystar:waystar-prior-authorization-api
  name: Waystar Authorization & Referral API
  tags:
  - Prior Authorization
  - Referrals
  - X12 278
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.waystar.com/our-platform/financial-clearance/authorizations/
  baseURL: https://priorauthorizationapi.waystar.com/1.0/
  properties:
  - url: https://developer.waystar.com/
    type: Documentation
  - url: https://www.waystar.com/our-platform/financial-clearance/authorization-referral-status/
    type: Documentation
  description: Automates prior authorization and referral determination and status, modeled on the X12 278 health care services
    review request/response. Covers submitting authorization requests, checking auth/referral status, and returning determinations.
    Waystar layers RPA and payer-portal automation on top of EDI where payers lack a transaction. Modeled from public product
    docs.
- aid: waystar:waystar-patient-estimation-api
  name: Waystar Patient Estimation API
  tags:
  - Patient Estimation
  - Price Transparency
  - Financial Clearance
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.waystar.com/our-platform/financial-clearance/coverage-detection/
  baseURL: https://estimationapi.zirmed.com/1.0/
  properties:
  - url: https://developer.waystar.com/
    type: Documentation
  description: Produces pre-service, good-faith patient cost estimates by combining eligibility/benefit data, contracted rates,
    and procedure codes to support price transparency and up-front patient collections. Modeled from Waystar's financial clearance
    product; not backed by a published OpenAPI definition.
- aid: waystar:waystar-claim-management-api
  name: Waystar Claim Management API
  tags:
  - Claims
  - Claim Submission
  - X12 837
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.waystar.com/our-platform/claim-management/claim-manager/
  baseURL: https://claimsapi.zirmed.com/
  properties:
  - url: https://developer.waystar.com/
    type: Documentation
  - url: https://www.waystar.com/our-platform/claim-management/claim-manager/
    type: Documentation
  description: Submits, scrubs, edits, tracks, and manages professional, institutional, and dental claims through Waystar's
    clearinghouse, modeled on the X12 837P/837I/837D claim transaction set. Includes claim creation, validation against payer
    edits, submission, and lifecycle management. Endpoints are modeled from the Claim Manager product and 837 standard.
- aid: waystar:waystar-claim-status-api
  name: Waystar Claim Status API
  tags:
  - Claim Status
  - X12 276/277
  - Tracking
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.waystar.com/our-platform/claim-management/claim-monitoring/
  baseURL: https://claimsapi.zirmed.com/
  properties:
  - url: https://developer.waystar.com/
    type: Documentation
  description: Queries and monitors claim status across payers, modeled on the X12 276 status inquiry and 277 status response
    - returning received, accepted, pending, denied, and paid states. Supports both real-time inquiry and automated status
    monitoring. Modeled from Waystar's claim monitoring product.
- aid: waystar:waystar-remittance-era-api
  name: Waystar Remittance & ERA API
  tags:
  - Remittance
  - ERA
  - X12 835
  - Payment Posting
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.waystar.com/our-platform/payment-management/remit-manager/
  baseURL: https://remitsapi.waystar.com/
  properties:
  - url: https://developer.waystar.com/
    type: Documentation
  description: Retrieves electronic remittance advice (835/ERA), payments, and adjustments for automated payment posting and
    reconciliation, with raw X12 835 artifacts and parsed JSON. Modeled on the X12 835 transaction and Waystar's Remit Manager
    product; concrete endpoints are partner-provisioned.
- aid: waystar:waystar-denial-management-api
  name: Waystar Denial & Appeal Management API
  tags:
  - Denials
  - Appeals
  - Recovery
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.waystar.com/our-platform/denial-prevention-recovery/denial-recovery/
  properties:
  - url: https://developer.waystar.com/
    type: Documentation
  description: Identifies denied claims, exposes denial and remark codes and explanation-of-benefits detail, and supports
    appeal creation, packaging, and resubmission workflows. Modeled from Waystar's denial prevention and recovery product;
    not backed by a published OpenAPI definition.
common:
- type: LinkedIn
  url: https://www.linkedin.com/company/waystar
- type: Website
  url: https://www.waystar.com/
- type: DeveloperPortal
  url: https://developer.waystar.com/
- type: Documentation
  url: https://developer.waystar.com/
- type: APIReference
  url: https://developer.waystar.com/documents/
- type: GettingStarted
  url: https://developer.waystar.com/documents/integration-basics/
- type: Support
  url: https://www.waystar.com/support/
- type: GitHubOrganization
  url: https://github.com/WaystarInc
- type: SignUp
  url: https://www.waystar.com/clients-partners/
- type: Login
  url: https://www.waystar.com/login/
- type: TermsOfService
  url: https://www.waystar.com/terms/
- type: PrivacyPolicy
  url: https://www.waystar.com/privacy-policy/
- type: Blog
  url: https://www.waystar.com/blog/
- type: BlogRSS
  url: https://www.waystar.com/feed/
- type: StatusPage
  url: http://status.esolutionsinc.com/
- type: Security
  url: https://www.waystar.com/responsible-disclosure/
- type: VulnerabilityDisclosure
  url: security/waystar-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/waystar-domain-security.yml
- type: Authentication
  url: authentication/waystar-authentication.yml
- type: Conventions
  url: conventions/waystar-conventions.yml
- type: Idempotency
  url: conventions/waystar-conventions.yml
- type: ErrorCatalog
  url: errors/waystar-problem-types.yml
- type: Lifecycle
  url: lifecycle/waystar-lifecycle.yml
- type: Conformance
  url: conformance/waystar-conformance.yml
- type: Sandbox
  url: sandbox/waystar-sandbox.yml
- type: DataModel
  url: data-model/waystar-data-model.yml
- type: Packages
  url: packages/waystar-packages.yml
- type: LLMsTxt
  url: llms/waystar-llms.txt
- type: Plans
  url: plans/waystar-plans-pricing.yml
- type: RateLimits
  url: rate-limits/waystar-rate-limits.yml
- type: FinOps
  url: finops/waystar-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-15'
  status: enriched
  artifacts_added: 4
  pass: local-v1