Prompt Attachments

A skill version composes prompts by attaching prompt versions in promptComposition.

What an attachment includes

• promptKey - stable prompt identity.
• attachmentMode - floating_latest_published or pinned_version.
• positionIndex - deterministic composition order.
• versionNumber - required only for pinned_version.

How attachments are used

• floating_latest_published follows the prompt's latest published version.
• pinned_version binds the skill version to a specific prompt version.
• Preview exposes the rendered prompt and composition trace before you run.

See also

• Composition Trace
• Common Patterns