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A brand’s sources are the raw material Rheos uses to build (and keep refining) your identity document — the single markdown file Rheos reads before generating every post. The richer your sources, the more on-brand the writing. Spending 10 minutes here pays off forever.

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The three source types

Paste a URL and Rheos crawls the relevant pages — homepage, about, services, blog. It extracts tone of voice, themes, audiences, products, and unique phrases you tend to use.Use a website source when you have a public site that already reflects your brand. One scrape costs 20 credits.

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The identity document

All sources merge into a single identity document — a clean markdown summary of your brand. Open Brands from the sidebar and select your brand. The identity document is right there to read or edit if Rheos got something wrong.
Treat the identity document like a living briefing. Re-read it every couple of months and tighten anything that’s drifted.

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Re-syncing sources

Websites change, your voice evolves, you launch a new service. From the Sources tab you can:
  • Re-scrape any website source (costs 20 credits each time)
  • Re-import AI examples with fresh posts
  • Upload a new or updated document
After any change, Rheos regenerates the identity document with version history — so you can roll back if something gets worse.

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What sources can’t do

Sources teach Rheos how you sound, not what’s happening today. For event-specific posts (a sale, a new hire, a product launch) put the news in the post prompt itself — that’s the right place for it.

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Best practice

  1. Start with a website scrape if you have one — it’s the fastest win.
  2. Add an AI import of 5 of your best posts to lock in voice.
  3. Upload one document — a “Tone of voice” file with 5 do’s and 5 don’ts works well.
  4. Re-read the identity document and tighten anything that feels off.
Once your sources are dialled in, every future post starts 80% of the way to good.
Last modified on June 22, 2026