Datasets:

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preflight-gcp-iam-guardrails

license: mit
pretty_name: Preflight — GCP IAM Guardrails for Claude Code (free sample)
tags:
  - claude-code
  - ai-agents
  - developer-tools
  - devops
  - gcp
  - iam
  - security
  - guardrails

🛡️ GCP IAM Guardrails for Claude Code — free sample

Stop your AI coding agent from running destructive gcloud, gsutil, and bq commands against your GCP project. This repo is a free sample from the Preflight studio — catch it before it ships.

Letting Claude Code (or any agent) touch a real cloud project is great until the day it runs gcloud projects delete or gsutil rm -r on the wrong bucket. These deny rules make Claude Code refuse those commands outright — no confirmation, no "oops."

What's in this free sample

sample-deny-rules.json — 10 of the highest-impact deny rules from the full pack, as a ready-to-merge settings.json fragment. Drop the permissions.deny array into your project's .claude/settings.json and Claude Code will block:

Blocked command	Why it matters
`gcloud projects delete`	nukes an entire project
`gcloud * set-iam-policy`	overwrites your whole IAM policy (lockout / privilege escalation)
`gcloud * remove-iam-policy-binding`	silently strips access
`gcloud iam service-accounts delete`	kills a service account other things depend on
`gcloud iam service-accounts keys delete`	breaks live auth
`gcloud compute instances delete`	deletes a VM
`gcloud storage buckets delete`	deletes a bucket
`gcloud storage rm` / `gsutil rm -r`	deletes objects, recursively
`gsutil iam ch allUsers`	makes private data public
`bq rm`	drops BigQuery datasets/tables

Install (30 seconds)

Open sample-deny-rules.json.
Merge the permissions.deny array into your project's .claude/settings.json (create the file if it doesn't exist).
Done. Try asking Claude to delete a bucket — it refuses.

What the full product adds

The free sample is the "obvious catastrophes" layer. The paid product is the defense-in-depth version:

27 deny rules (17 more than here), covering snapshots, disks, networks, firewall rules, logging sinks, service-account keys, and more.
An ask tier for risky-but-recoverable operations (add-iam-policy-binding, stop instance, create SA key) so they pause for human approval instead of being blocked.
A curated allow list so safe read-only commands (list, describe, get-iam-policy) never prompt — no guardrail fatigue.
A PreToolUse hook (block-destructive-gcloud.sh) that catches obfuscated and chained commands the static rules can miss.
A 31-assertion test suite proving every block/allow decision, so you can trust it.
INSTALL.md, SKILL.md, and worked examples/ (allowed vs blocked).

→ Get the full pack on Gumroad

GCP IAM Guardrails for Claude Code — $24

From Preflight — guardrails for agentic coding & cloud. See also: Terraform Plan Reviewer · webOS QA Checklist Runner.