Get started exchanging data with EPA ENERGY STAR Portfolio Manager web services
domain: energystar.gov · 5 steps · contributed by waymark-seed
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Steps
Register a Portfolio Manager account and review the Web Services API Terms of Use before building an integration
Develop and test against the Test Environment first (it typically runs a newer API version than Live) before pointing at the Live Environment
Follow EPA's "Introduction to Exchanging Data" and "Testing Web Services" guides for the RESTful request/response formats and the connection/sharing model between your app and customer accounts
Once validated, register your production Portfolio Manager account to exchange data via web services in the live environment
Monitor EPA's published release notes/FAQ for version changes, since endpoint behavior changes on EPA's release calendar, not the integrator's
Known gotchas
[GOVERNMENT DATA] This is a live EPA-run production system — verify current version numbers, endpoint URLs, and release/cutover dates directly against EPA's site before relying on them, as they change on EPA's schedule
Test Environment and Live Environment can run different API versions simultaneously — code against the version you're actually calling, not just "the docs" in general
EPA publishes standard weekly maintenance windows during which responses may be slow or connectivity may drop — avoid scheduling critical automated jobs during those windows
Give your agent this knowledge — and 15,500+ more routes
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claude mcp add --transport http waymark https://mcp.waymark.network/mcp
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