Empower Balance API
Listed in the public API catalog of the Empower developer portal, operated by Great-West Lifeco's U.S. retirement subsidiary Empower. Marked "production" and categorized "financial", it returns participant-level balance data for employer-sponsored retirement plans, including total balances, investments, loans and vesting balances, in JSON, for integration into Empower client and partner solutions. The catalog page is public and states the API was developed following OpenAPI Specification standards, but the reference documentation itself is gated ("To see the reference documentation, please login") and access is granted only through the portal "Get Access" request flow, after which an API key and OAuth client credentials are delivered by secure email. No machine-readable specification, base URL, or endpoint list is published anonymously. The baseURL below is the group's probe-observed U.S. API gateway host (api.empower.com, AWS API Gateway, which answers {"message":"Forbidden"} to every anonymous request); the documented base URL is delivered privately with the credential package, and Empower's own product page lists this API as "DC participant balances" among eight named API products.