CrossBeam Permits — AI-assisted building-permit plan review for cities and builders.

Ask Codex, Gemini, Grok, and 400+ OpenRouter models (Qwen, Kimi, DeepSeek) for second opinions or arbiter-mediated consensus. One MCP server for Claude Code, Codex, Cursor, Kiro, OpenCode. Measures which models earn their seat.

Claude Code plugin for validating implementation plans with parallel review subagents — checks codebase alignment, best practices, feasibility, and blind spots before execution

Browser-first markdown plan review. Start local web review in one command, then let your agent continue through MCP.

[ARCHIVED → github.com/Redloft/redkit] plan-panel + finalize консолидированы в монорепо redkit

Local browser review app for Codex plans

Catch the bad plan before you spend the tokens. Cross-LLM peer review via MCP.

Garry Tan's Mega Plan Review adapted for startup business plans, launch bibles, and fundraising strategies. Same rigor, same three modes (EXPANSION / HOLD SCOPE / REDUCTION), different domain. Stress-test your startup plan like Garry stress-tests his engineering plans.

Auditable self-running critique loops for AI agents and plan review

日常简单 Grill；方案先预审核，只在 ADR 时集中请求决策

Source-aware plan-review skill for Claude Code, Codex, and AI coding agents.

Review construction plan sets like a plan checker + owner's rep — permit-set review and active-project document control (revisions, ASIs, RFIs, shop drawings, inspections). Installable Claude skill/plugin.

A Claude Code skill for iterative, independent plan review before execution. Domain-neutral orchestration with pluggable reviewer prompts (code / judicial PT-BR / generic) and a deterministic Python validator as a hard gate against open findings.

3-round cross-agent spec/plan review pipeline. Reviewer audits findings and author settles them across fresh sessions, with a strict final round.

Structured multi-agent review for plans, specs, and code with iterative debate, patch-based auto-apply, and a full audit trail.

Adversarial second-opinion reviews for AI coding agents. Auto-gates risky plans before ExitPlanMode and routes them through Codex/Gemini/Opencode for a fresh-lineage critique — with a self-review fallback. Ships as a Claude Code plugin and a portable skill.

Local multi-CLI plan reviews for AI coding agents.

VS Code extension that intercepts Plannotator browser opens and displays plan reviews inside VS Code tabs instead of an external browser.

An adversarial review system for LLM agents. Shadow personas are observational agents that monitor a primary agent's output and produce independent critique — without participating in the conversation.

Best Free AI Code Review Tool 2026 – Catch Flawed Plans Before Deployment