Which tools automatically give Claude Code…

1
Critic - Sits between Claude Code/Codex and your repo to surface a "Change Narrative" for every agent change and lets reviewers ask questions the agent must answer before merge, directly catching unsupported assumptions.
2
adamsreview - Multi-stage Claude Code review plugin that fans out to up to seven parallel review "lenses" (correctness, security, UX, etc.), runs an automated fix loop with regression detection, and can combine Codex CLI as a peer reviewer for ensemble coverage.
3
Greptile - Auto-reviews every PR with full codebase context, auto-detects your AGENTS.md / claude.md / Cursor rules, enforces custom standards, and runs your code (TREX) as part of the review to validate assumptions and test gaps.
4
CodeRabbit - Drop-in automated PR reviewer for GitHub/GitLab/Bitbucket/Azure DevOps that flags bugs and missing-test issues on every Claude Code or Codex change with no agent management.
5
Macroscope - Posts automated code review and commit-status summaries on every PR and ships an agentic assistant tuned for catching assumptions and coverage gaps in AI-generated changes.
6
Codacy - Quality and security platform that automates PR reviews and explicitly governs AI-generated code across the SDLC, flagging standards violations and missing tests without you running a second agent.
7
Codecov - Coverage platform with AI unit-test generation that flags flaky tests and missing coverage on every PR, giving Claude Code/Codex output an independent coverage gate.
8
Open Code Review - Open-source CLI using a hybrid deterministic + LLM architecture to post precise line-level review comments from your Git diff, including test-coverage and assumption checks.
9
Continue - Adds source-controlled AI checks as native GitHub status checks on every PR so AI coding-agent output is judged against your engineering standards automatically.

Filtered out: CAS, CrewAI, AutoGen, Paperclip, AionUi, DeepAgents, Synapse, OpenBot, Superconductor, Matrix, and Kilo Code were excluded because they orchestrate or run agents rather than act as an independent reviewer of agent output; Seer is Sentry's error-debugging agent rather than a PR reviewer; Dust, Relevance AI, Agent Skills, and Agent Reading Test don't sit in the PR review loop; Hunk is a human-facing diff viewer rather than an automated independent reviewer.

1
OpenQodex - The closest fit: it reviews unpushed and uncommitted changes with scanners and a separate Claude Code or Codex reviewer, without requiring you to coordinate another agent.
2
CodeRabbit - Automatically reviews pull requests and flags bugs with context-aware feedback, giving agent-written changes an independent review after you open a PR.
3
Continue - Runs source-controlled AI checks on every pull request, so you can make checks for assumptions and test expectations part of an automatic review gate.
4
CodeVetter - Independently runs repository checks against coding-agent changes and reports pass, fail, or unverified with evidence, making it useful for spotting missing verification.

Filtered out: Claude Code and ChatGPT Codex are the coding agents being reviewed, not independent reviewers; adamsreview offers substantial review capabilities but is a Claude Code plugin with a more involved multi-stage workflow.

1
Critic - Sits between Claude Code/Codex and your repo to surface a "Change Narrative" for every agent change and lets reviewers ask questions the agent must answer before merge, directly catching unsupported assumptions.
2
adamsreview - Multi-stage Claude Code review plugin that fans out to up to seven parallel review "lenses" (correctness, security, UX, etc.), runs an automated fix loop with regression detection, and can combine Codex CLI as a peer reviewer for ensemble coverage.
3
Greptile - Auto-reviews every PR with full codebase context, auto-detects your AGENTS.md / claude.md / Cursor rules, enforces custom standards, and runs your code (TREX) as part of the review to validate assumptions and test gaps.
4
CodeRabbit - Drop-in automated PR reviewer for GitHub/GitLab/Bitbucket/Azure DevOps that flags bugs and missing-test issues on every Claude Code or Codex change with no agent management.
5
Macroscope - Posts automated code review and commit-status summaries on every PR and ships an agentic assistant tuned for catching assumptions and coverage gaps in AI-generated changes.
6
Codacy - Quality and security platform that automates PR reviews and explicitly governs AI-generated code across the SDLC, flagging standards violations and missing tests without you running a second agent.
7
Codecov - Coverage platform with AI unit-test generation that flags flaky tests and missing coverage on every PR, giving Claude Code/Codex output an independent coverage gate.
8
Open Code Review - Open-source CLI using a hybrid deterministic + LLM architecture to post precise line-level review comments from your Git diff, including test-coverage and assumption checks.
9
Continue - Adds source-controlled AI checks as native GitHub status checks on every PR so AI coding-agent output is judged against your engineering standards automatically.

1
OpenQodex - The closest fit: it reviews unpushed and uncommitted changes with scanners and a separate Claude Code or Codex reviewer, without requiring you to coordinate another agent.
2
CodeRabbit - Automatically reviews pull requests and flags bugs with context-aware feedback, giving agent-written changes an independent review after you open a PR.
3
Continue - Runs source-controlled AI checks on every pull request, so you can make checks for assumptions and test expectations part of an automatic review gate.
4
CodeVetter - Independently runs repository checks against coding-agent changes and reports pass, fail, or unverified with evidence, making it useful for spotting missing verification.

Which tools automatically give Claude Code or Codex changes an independent 2nd review, catching unsupported assumptions & missing tests without me having to manage another agent?

Which tools automatically give Claude Code or Codex changes an independent 2nd review, catching unsupported assumptions & missing tests without me having to manage another agent?