What is thumbgate-rules?

A command that displays ThumbGate's active prevention rules, reliability rules, and the lessons that led to them. ThumbGate is a project guardrail system that can block certain actions.

Use it to inspect active rules, see the lessons behind them, and understand what is blocked.

It explains what the project currently blocks and why each guardrail exists.

How IgorGanapolsky/ThumbGate configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to IgorGanapolsky/ThumbGate. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/IgorGanapolsky/ThumbGate/main/.claude/commands/thumbgate-rules.md

Clone the repo

git clone --depth 1 https://github.com/IgorGanapolsky/ThumbGate

Made for: Claude Code.

Or install thumbgate, the plugin that ships this one along with the rest of its 35 skills, 7 commands, 1 agent, 5 hooks, 2 MCP servers, 2 plugins.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/igorganapolsky/thumbgate/thumbgate-rules.svg)](https://agentmods.dev/commands/igorganapolsky/thumbgate/thumbgate-rules)

Your own site

<a href="https://agentmods.dev/commands/igorganapolsky/thumbgate/thumbgate-rules"><img src="https://agentmods.dev/badge/commands/igorganapolsky/thumbgate/thumbgate-rules.svg" alt="Measured on agentmods" height="20"></a>

Per session 49 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 327 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.

Model	Per session	Once invoked
Fable 5.1	$0.00049	$0.00327
Opus 5	$0.00024	$0.00163
Sonnet 5	$0.00010	$0.00065
Haiku 4.5	$0.00005	$0.00033

Measured 8d ago against content hash e64cfad096ed, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

thumbgate-rules 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 8d 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.

.claude/commands/thumbgate-rules.md · 31 lines

What it actually says

ThumbGate Rules

Show the guardrails currently in force for this project: the auto-promoted prevention rules, the reliability rules, and the promoted lessons behind them.

This command wraps existing ThumbGate capability — no new logic. It reads the live rule + lesson stores.

Steps

List the active prevention rules with the prevention_rules MCP tool (or the CLI fallback npx thumbgate rules).
Pull the reliability rules with get_reliability_rules to show which tool-call shapes are gated.
For each rule, surface the lesson it came from with search_lessons so the user sees why the rule exists, not just what it blocks.
Present a compact table:

Rule / Gate Blocks From lesson State

… … … active / archived
If there are zero active rules, point the user to /thumbgate-guard to promote their first one.

Rule / Gate	Blocks	From lesson	State
…	…	…	active / archived

Example

/thumbgate-rules

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.

8d ago First seen · 31 lines · 49 tokens per session scan A e64cfad096ed

Subscribe to this mod's changes

thumbgate-rules is a command published in the GitHub repository IgorGanapolsky/ThumbGate (26 stars, last pushed today), licensed MIT. It adds 49 tokens to every session and 327 once invoked, about $0.0002 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 2026-08-30.

AI Safety Guardrails Security agent-reliability ai-agents developer-tools thompson-sampling

ThumbGate: Command for Claude Code

Borrowing it

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

What it actually says

ThumbGate Rules

Steps

Example

What this file has done since we first saw it

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