Validate second-brain plugin behavior against code claims with layered adversarial checks.
npx skills add https://github.com/Cain-Ish/claude-code-plugin --skill doubt-cain-ish
Please help me install this Agent Skill. Skill: doubt Source: https://github.com/Cain-Ish/claude-code-plugin/tree/main/skills/doubt Command: npx skills add https://github.com/Cain-Ish/claude-code-plugin --skill doubt-cain-ish
It reduces the risk that the second-brain plugin silently fails or drifts from its stated behavior by forcing you to read the real code and verify the real on-disk outputs through an adversarial, evidence-backed workflow.
Run doubt with no arguments to automatically select the most relevant plugin layers and adversarial perspectives, then produce a doubt session report with code citations and runtime-state checks.
High-intent search queries and answers about installing and using this skill.
You can validate plugin correctness by inspecting git history and filesystem state to verify expected runtime artifacts exist on disk, requiring evidence-first branching with file:line citations for any findings.
It is a skeptical protocol that maps doubt to concrete files across plugin subsystems like hooks and MCP servers, checking correctness, failure modes, and integration gaps through conversational branch drilling.
By running a doubt session that checks both source code and on-disk state, you confirm expected runtime artifacts physically exist, catching discrepancies between code logic and actual outputs.
Git inspection tracks change recency to rotate adversarial perspectives across runs, preventing repeated weak questions and surfacing fresh-install behavior, integration gaps, and gradual degradation over time.
The reviewer gate requires confirmation for any ISSUE or FRAGILE findings, using a dedicated reviewer agent to validate issues and prevent over-pruning of adversarial branches during the validation process.
If your environment cannot support reviewer-gated confirmation or evidence-first branching with file:line citations, the doubt protocol cannot reliably validate plugin correctness or observability gaps.
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