Desk-reviewedStrong signal
Design and media

Sepia

Sepia is a portable agent skill for writing, reviewing, minimally refactoring, or recreating fiction and professional prose with venue-specific structural rules.

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Machineworthy take

It targets narrative architecture and document-specific failure modes rather than merely replacing stereotypically AI-sounding words.

Access and pricing

Free MIT-licensed skill with no account required; usage consumes the selected agent or model's quota.

Verification notes

Verified live on 2026-09-29; distributed as an agent skill rather than a standalone product.

Review scope: official-source desk review. This is not a hands-on performance test or endorsement.

Evidence checked

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All design and media