Preflight free sample → Gumroad funnel (GCP IAM Guardrails)

README.md

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+---
+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
+---
+
+![Preflight — GCP IAM Guardrails for Claude Code](banner.png)
+
+# 🛡️ 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**](https://lindenberg17.gumroad.com/) 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)
+
+1. Open `sample-deny-rules.json`.
+2. Merge the `permissions.deny` array into your project's `.claude/settings.json`
+   (create the file if it doesn't exist).
+3. 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](https://lindenberg17.gumroad.com/l/hmtcxf?ref=hf)**
+
+---
+
+*From **Preflight** — guardrails for agentic coding & cloud. See also:
+[Terraform Plan Reviewer](https://lindenberg17.gumroad.com/l/qodem?ref=hf) ·
+[webOS QA Checklist Runner](https://lindenberg17.gumroad.com/l/fhrioj?ref=hf).*

sample-deny-rules.json

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+{
+  "_comment": "Preflight — GCP IAM Guardrails (FREE SAMPLE). 10 of the highest-impact deny rules from the full pack. Merge the `permissions.deny` array into your project's .claude/settings.json. Claude Code refuses any matching Bash command outright. The full product adds 17 more deny rules, an `ask` tier for risky-but-recoverable ops, a curated `allow` list, a PreToolUse hook that catches obfuscated commands, and a 31-assertion test suite. → https://lindenberg17.gumroad.com/l/hmtcxf?ref=hf",
+  "permissions": {
+    "deny": [
+      "Bash(gcloud projects delete:*)",
+      "Bash(gcloud * set-iam-policy:*)",
+      "Bash(gcloud * remove-iam-policy-binding:*)",
+      "Bash(gcloud iam service-accounts delete:*)",
+      "Bash(gcloud iam service-accounts keys delete:*)",
+      "Bash(gcloud compute instances delete:*)",
+      "Bash(gcloud storage buckets delete:*)",
+      "Bash(gcloud storage rm:*)",
+      "Bash(gsutil rm -r:*)",
+      "Bash(gsutil iam ch *allUsers*:*)",
+      "Bash(bq rm:*)"
+    ]
+  }
+}