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Build with Oswald is the third path for creating a Horizon. You describe the Horizon to Oswald in plain language. Oswald drafts the structure, suggests the content, and presents the result for your approval. You edit and publish. The path is Guardian-only.
Build with Oswald is in pre-general-availability beta. The feature is rolling out to Guardian-tier customers through 2026. If you do not see it in your atlas yet, it has not yet been enabled for your account.

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When to choose Build with Oswald

Build with Oswald is the right path when:
  • You know what the Horizon should cover but have not yet decided on the structure.
  • The Horizon is a recognisable type (sub-brand, campaign, regional adaptation, partnership) where good defaults speed the work.
  • You want to compress the “blank page” moment.
  • You are short on time and a draft to edit is more useful than starting from scratch.
The visual editor remains better when you know exactly what you want and would type it faster than describe it. MDX upload remains better for technical authoring or when a studio is delivering the file.

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How it works

1

Open the Build-with-Oswald prompt

From Horizons → New Horizon, choose Build with Oswald. Oswald opens a conversation panel.
2

Describe the Horizon

Tell Oswald what the Horizon is for. A useful prompt covers four things in any order:
  • The kind of Horizon (sub-brand, campaign, regional adaptation, partnership, internal, product).
  • The subject (the name of the sub-brand, the name of the campaign).
  • The scope (what should and should not be covered).
  • Any specific constraints (a deadline, a partner whose rules need to be respected, an audience to write for).
Three sentences is usually enough. Five at most. Oswald asks clarifying questions if anything is ambiguous.
3

Review the draft

Oswald drafts the Horizon as a complete page: structure, suggested content, recommended blocks. The draft is presented in the visual editor as a draft Horizon. Nothing is published yet.Oswald’s draft is built from the existing brand record: the eight standard sections inform the recommendations, and any related existing Horizons are referenced. The draft will not contradict the current brand.
4

Edit

Treat the draft as a starting point. Edit any block, remove blocks that do not fit, add blocks Oswald did not consider. The Horizon is yours; Oswald drafted it.
5

Publish

When the Horizon is ready, publish through the visual editor’s standard publish flow. Set the audience, set the expiry if applicable, and confirm.
The Horizon is live. Oswald’s authorship is recorded alongside yours in the brand record’s history: drafted by Oswald, approved and published by you.

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What Oswald does well

Oswald is reliably good at:
  • Structural defaults. A campaign Horizon ends up with the blocks a campaign needs: the visual system, the typographic treatment, the photography direction, the tone notes, the cadence, the timeline.
  • Drawing on the brand record. Oswald reads the standard sections and the existing Horizons; the draft uses the current palette, the current voice, the current photography direction without your needing to instruct it.
  • Concise prose. Oswald drafts in the brand’s voice, with the brand’s banned vocabulary excluded by default.
  • Tables and structured blocks. Specifications, comparisons, partner rules; structured content comes out clean.

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What Oswald does not do well

Oswald is reliably weak at:
  • Strategy. Oswald drafts; it does not decide. If you ask Oswald to choose between two strategic directions, you will get a recommendation that is plausible but not necessarily right. Decide first, then ask Oswald to draft against the decision.
  • Asset selection. Oswald cannot choose images for you. It can recommend the kind of image; the choice is yours.
  • Voice nuance. Oswald approximates the brand’s voice; close human reading is still required.
  • Original ideas. Oswald composes from material that exists. Genuinely new directions come from you or your team.

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Reviewing what Oswald did

Every Build-with-Oswald session records:
  • Your prompt.
  • Oswald’s response chain (clarifying questions, decisions made).
  • The draft Oswald produced.
  • Your edits before publishing.
  • The final published Horizon.
The record is visible from the Horizon’s history tab. Useful for reviewing how a Horizon came to be and for refining prompts on future Horizons.

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Cost

Oswald usage on Build with Oswald is included in the Guardian tier subscription. There is no per-message or per-Horizon charge.

What Oswald does

The full Oswald reference.

Talking to Oswald

Prompt patterns that work.

Visual editor

The alternative path.