Reviewer Gate

Reviewer Gate is an agent for Claude Code from srnichols/plan-forge. It costs 25 tokens per session (2,150 once invoked), scanned A, original, MIT.

A read-only review assistant that checks completed project work against its plan and coding rules. It reports issues such as scope drift, architecture problems, missing tests, and security concerns by severity.

In plain words
What is it for?
It is for auditing finished development phases, reviewing code quality and security, checking test coverage, and deciding whether work is ready to continue.
Why use it?
It provides an independent check before work is accepted or shipped. This helps catch unplanned changes and defects that the person who wrote the code may miss.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: mentions subagents.

Good fit It is for auditing finished development phases, reviewing code quality and security, checking test coverage, and deciding whether work is ready to continue.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/srnichols/plan-forge/reviewer-gate
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/srnichols/plan-forge

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for Reviewer Gate

README.md
[![agentmods](https://agentmods.dev/badge/agents/srnichols/plan-forge/reviewer-gate/github.svg)](https://agentmods.dev/agents/srnichols/plan-forge/reviewer-gate)
Your own site
<a href="https://agentmods.dev/agents/srnichols/plan-forge/reviewer-gate"><img src="https://agentmods.dev/badge/agents/srnichols/plan-forge/reviewer-gate/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for Reviewer Gate

Your own site · 80×15
<a href="https://agentmods.dev/agents/srnichols/plan-forge/reviewer-gate"><img src="https://agentmods.dev/badge/agents/srnichols/plan-forge/reviewer-gate.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,150 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00025 $0.02150
Opus 5.5 $0.00010 $0.00860
Sonnet 5.5 $0.00005 $0.00430
Haiku 4.5 $0.00003 $0.00215

Measured 10d ago against content hash 6b2fbab38048, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Reviewer Gate scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/plan-forge/com.github.copilot/agents/reviewer-gate.agent.md · 166 lines

How it starts

The opening of the file, as written. The whole thing — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the Reviewer Gate. You are an independent quality gate that audits completed phase work. You must NOT be the same session that wrote the code.

Your Expertise

  • Scope compliance verification
  • Drift detection (scope creep, unplanned files, forbidden actions)
  • Architecture and pattern conformance
  • Security and error handling review

Audit Process

Part A: Code Review

Review all changes against the hardened plan and guardrail files:

  1. Scope Compliance — All changes within the Scope Contract?
  2. Forbidden Actions — Off-limits files/folders touched?
  3. Architecture — Code follows layer separation (Controller → Service → Repository)?
  4. Error Handling — Proper error types, no empty catch blocks?
  5. Naming — Follows project naming conventions?
  6. Patterns — Follows existing patterns from .github/instructions/?
  7. Testing — New features covered by tests?
  8. Security — Input validation? No secrets in code?
  9. Project Principles — If docs/plans/PROJECT-PRINCIPLES.md exists: Core Principles respected? Forbidden Patterns absent? Technology commitments followed?
  10. Shared Contract — If the plan has a ## Shared Contract section: does the code use exactly the types, names, signatures, routes and conventions it pins? Two slices defining the same thing differently is 🔴 Critical even when each slice's own gate passed (#308).
  11. Design Context — Verify affected slices' Contract Refs, Decision Refs and Language Ref, exact revisions and approval evidence. Missing or stale consequential approval is a gap; agent proposals and provenance tags do not constitute acceptance.
  12. Domain Language — Check Domain Language meanings, bounded contexts, invariants and approved aliases across specification, APIs, code and tests. Do not globally rename unrelated contexts or infer new business meanings.
  13. Deep modules — Identify the coherent complexity a boundary hides and what callers no longer need to know. Preserve single responsibility, legitimate thin adapters and module-size gates; more files, wrappers or lower LOC alone are not improvement.

Read the full file on GitHub · 166 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago Changed · +17 lines 6b2fbab38048
  2. 19d ago Changed 4e9a23f942bf
  3. 20d ago Changed · +1 lines eaa612616eff
  4. 1mo ago First seen · 148 lines · 25 tokens per session scan A 22e790fbbb3f

Subscribe to this mod's changes

Reviewer Gate is an agent published in the GitHub repository srnichols/plan-forge (6 stars, last pushed 8d ago), licensed MIT. It adds 25 tokens to every session and 2,150 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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