y-abs

Plan Challenger — Security agent for Claude Code

Security community

Adversarial plan review before implementation.

How to install Plan Challenger

Installs to ~/.claude/agents/y-abs-claude-code-brain-bootstrap-plan-challenger.md

Terminal
mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/y-abs/claude-code-brain-bootstrap/HEAD/.claude/agents/plan-challenger.md -o ~/.claude/agents/y-abs-claude-code-brain-bootstrap-plan-challenger.md

Restart Claude Code, or start a new session, for it to be picked up.

What Plan Challenger does

name: plan-challenger description: Adversarial plan review before implementation. Attacks plans across 5 dimensions (Assumptions, Missing Cases, Security, Architecture Fit, Complexity Creep), then self-refutes to eliminate false positives. allowed-tools:

  • Read
  • Grep
  • Glob
  • Bash(grep *)
  • Bash(find *)
  • Bash(cat *)
  • Bash(head *)
  • Bash(tail *)
  • Bash(wc *)
  • Bash(ls *)
  • Bash(git *)

model: declares intent — falls back to session model if unavailable (model-agnosti

Alternatives in Security

  • GraphQL Audit — GraphQL API security specialist 812 ★
  • Audit Verifier — Adversarially verifies one candidate finding from /bug-audit — tries to REFUTE it by reading the code and, whe 335 ★
  • After Confirming A Vulnerability — findings.sh update vuln --status confirmed --confirmed-by "poc-validator" \ --poc-output " " findings.sh updat 213 ★

Full documentation available on GitHub

View Source Repository

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