Zelis API

Zelis' partner-facing API platform, published through the Zelis developer portal and API marketplace. The catalog spans claims document search and viewing, member ID card search and viewing, provider directory, enrollment communications, payments communications, and member activation/reward surfaces. Access is gated behind OAuth2 client-credential tokens plus an Azure API Management subscription key (Ocp-Apim-Subscription-Key).

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/zelis-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.

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

API entry from apis.yml

apis.yml Raw ↑
name: Zelis API
description: Zelis' partner-facing API platform, published through the Zelis developer portal and API
  marketplace. The catalog spans claims document search and viewing, member ID card search and viewing,
  provider directory, enrollment communications, payments communications, and member activation/reward
  surfaces. Access is gated behind OAuth2 client-credential tokens plus an Azure API Management subscription
  key (Ocp-Apim-Subscription-Key).
humanURL: https://developer.zelis.com/
baseURL: https://api.zelis.com/
tags:
- Healthcare
- Claims
- Payments
- Provider Directory
properties:
- type: Authentication
  url: authentication/zelis-authentication.yml
- type: Conventions
  url: conventions/zelis-conventions.yml