If you have a Halcyon API key, you can connect it to an LLM and ask questions about regulatory filings in plain language. Claude handles the API calls for you. It searches across publishers and dockets, runs queries, reads your alert notifications and downloads your data subscriptions, then answers with links back to the source documents in Halcyon.
The examples below are real conversations. Each one shows the prompt, Claude's response, and the parts of the API it used. You can use them as starting points for your own questions, whether you're tracking a single docket, comparing large load tariffs across states, or catching up on what your alerts found this week.
A few things to keep in mind:
- Answers cite their sources. Every claim links to the filing it came from, so you can check the original.
- Narrow questions get better answers. A query reads a ranked selection of matching documents, not every match. Naming a publisher, docket or date range makes the answer more complete.
- Alerts are read-only through the API. Claude can read what your alerts found, but you create and edit alerts in app.halcyon.io.
Brief me on FERC EL26-67 before my 2pm.
Summarize the last 30 days of my alerts. What’s new, and what’s accelerating?
For every rate case decided this year in PJM states, give me the requested vs. approved increase and the ROE, with citations.
Which ideal candidate sites sit in utility territories with an open large-load tariff proceeding?
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