forked from bchanot/claude
38 lines
1.6 KiB
Markdown
38 lines
1.6 KiB
Markdown
# Model gate — reflection requires a big model (BLOCKING)
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Shared include. Runs FIRST in any orchestrator whose reflection —
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brainstorming, planning, contract, audit judgment, loop decisions —
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executes inline or in inherit-model subagents. Sonnet-pinned executors are
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not what this gate protects; it protects the thinking around them (BDR-066).
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## 1. Self-check
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Your system prompt names the model powering this session. Fable or Opus →
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big. Sonnet, Haiku, anything else → small.
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## 2. Witness — deterministic check
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bash "$HOME/.claude/lib/model-check.sh"
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Output `<class>:<raw>`; exit 0 = big, 2 = small, 3 = unknown. The witness
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reads the PERSISTED model (settings.json — the file `/model` rewrites,
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LRN-098). It can lag reality (session launched with `--model`, settings not
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yet rewritten) — that is why the self-check exists alongside it.
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## 3. Verdict
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| self-check | witness | action |
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|---|---|---|
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| big | big (0) | proceed, SILENT — the nominal path prints nothing |
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| small | any | **STOP** |
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| big | small (2) | disagreement — **STOP**, surface BOTH values; the user confirms or relaunches |
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| big | unknown (3) | fail-visible: print `model gate: witness unknown (<raw>) — self-check says <model>` and ask the user to confirm before continuing (BDR-025: unknown never silently passes) |
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**STOP means**: print exactly
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⛔ MODEL GATE — session on <model>. Reflection steps of this skill
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require Fable or Opus. Switch with /model, then relaunch the skill.
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then end the turn. No later step runs, no agent is dispatched, nothing is
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edited.
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