Waystar

Waystar Eligibility Verification API

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.

GitHub

Documentation

📖
Documentation
https://developer.waystar.com/
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/waystar/refs/heads/main/authentication/waystar-authentication.yml

Other Resources

🔗
SignUp
https://www.waystar.com/our-platform/financial-clearance/eligibility-verification/
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/waystar/refs/heads/main/apis.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/waystar-eligibility-verification-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
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.