gater

A command that asks a configured AI service to review pending code changes before work stops. It returns either permission to continue or a block with reasons.

In plain words
What is it for?
Use it for an adversarial review of changes before finishing a task.
Why use it?
It adds a final check for problems that may have been missed during development and makes the decision explicit.

Command

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.

agentmods
npx agentmods add commands/dysfunc/ai-plugins-cc/gater
Clone the repo
git clone --depth 1 https://github.com/dysfunc/ai-plugins-cc
Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 126 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00011 $0.00126
Opus 5 $0.00005 $0.00063
Sonnet 5 $0.00002 $0.00025
Haiku 4.5 $0.00001 $0.00013

Measured 2d ago against content hash 05ab7aa6c3bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

gater 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 2d 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/ai/commands/gater.md · 16 lines

What it actually says

Run:

node "${CLAUDE_PLUGIN_ROOT}/scripts/ai-companion.mjs" gater $ARGUMENTS

The gater performs an adversarial review of the pending changes and returns either ALLOW: or BLOCK: on the first line, followed by a rationale. Provider resolution follows the same precedence as /ai:review.

If the gate returns BLOCK:, surface the rationale to the user without softening it.

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. 2d ago First seen · 16 lines · 11 tokens per session scan A 05ab7aa6c3bd

Subscribe to this mod's changes

gater is a command published in the GitHub repository dysfunc/ai-plugins-cc (4 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 11 tokens to every session and 126 once invoked, about $0.0001 per session on Opus 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 2026-08-31.