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Mark the skill template TextPart as synthetic so the full prompt is
sent to the model but hidden from the user. Add a short ignored
summary part ('Running skill: <command>') so the user still sees
confirmation that the skill was loaded.
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Summary
TextPartassynthetic: trueinresolvePromptParts()so the full prompt is sent to the model but hidden from the user in the chat UI.ignored: truesummary part ("Running skill: <command>") so the user still sees confirmation that the skill was loaded, without exposing the full prompt or polluting the model's context.Details
When a user invokes a slash command (e.g.
/onboarding), the entire SKILL.md template was previously injected as a regularTextPartand displayed verbatim in the chat — disruptive for long skill prompts.OpenCode's existing
synthetic/ignoredsemantics handle this cleanly:synthetic: trueignored: trueThe subtask path is unaffected (it uses
SubtaskPart, notTextPart). The OpenWork frontend already filters on these flags, so no UI changes are needed.