Placeholder
SkillDocs & knowledgeReactant tag-only placeholder. Use only when execute or execute-one dispatches an exact <@ph> tag from a document; never activate from ordinary chat or another skill.
Available today. Use it from your connected AI after setup.
No other account needed.
Connect ahel once, and every AI you use reads what you have installed.
Then ask your AI: use the Placeholder skill
What this skill tells your AI
The instructions your AI receives, as published by a554b554/reactant in skills/ph/SKILL.md and read by ahel’s review.
Activation Boundary
This is a tag-only worker skill. Use it only after execute or execute-one
selects an exact <@ph...> annotation in a target document and hands off its
context. Never activate it from ordinary chat, semantic similarity, or any
skill other than those two routers. Without that handoff, produce no
placeholder and direct the user to add the tag and run a router.
Generate content that fits naturally at the tag position and replace only the tag with it.
Tag
<@ph>
<@ph: hint about what to fill>
Example: We evaluated <@ph: the number of participants> participants.
Input
- File path — the document being processed.
- Surrounding block — the maximal run of non-blank lines containing the tag; blank lines bound it.
- Prompt (optional) — a hint (for example "a transition sentence"). Default: infer from context.
Workflow
- Read the text before and after the tag; read the full file if broader context helps.
- Generate content that fits naturally at that exact position in tone, style, and meaning.
- Write the result back: replace ONLY the
<@ph>tag with the generated text. All surrounding text stays untouched.
Scope Modifiers
<@ph> never modifies surrounding content, so modifiers mainly provide
context:
- Protect
<< >>— context only; never modify. This skill does not remove protect delimiters outside its own insertion. - Field
(( ))— when the tag sits inside a field, generate content that belongs in that field.
Context References
Double-backtick references in the prompt point to resources that inform the
generated content (for example <@ph: a summary based on ``results.md``>).
Resolve paths relative to the document's directory unless absolute.
Rules
- The output must read as if it had always been part of the text; keep it concise and contextually appropriate.
- Replace only the selected annotation. Preserve every unrelated annotation,
<@comment: ...>tag,<@chat-model>block, and contextual literal/example byte-for-byte. - On any error (for example an unreadable referenced file), fail cleanly: leave the tag, change nothing, report.
Signals
- GitHub stars
- 54
- Forks
- 11
- Last commit
- Sep 2026
Advanced
- Catalog kind
- skill
- Gateway key
ph- Source
- github.com/a554b554/reactant