Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/xalgorix/xalgorixnpx agentmods add skills/xalgorix/xalgorix/performing-gcp-security-assessment-with-forsetiWrote 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.
[](https://agentmods.dev/skills/xalgorix/xalgorix/performing-gcp-security-assessment-with-forseti)<a href="https://agentmods.dev/skills/xalgorix/xalgorix/performing-gcp-security-assessment-with-forseti"><img src="https://agentmods.dev/badge/skills/xalgorix/xalgorix/performing-gcp-security-assessment-with-forseti/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.
<a href="https://agentmods.dev/skills/xalgorix/xalgorix/performing-gcp-security-assessment-with-forseti"><img src="https://agentmods.dev/badge/skills/xalgorix/xalgorix/performing-gcp-security-assessment-with-forseti.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00055 | $0.02991 |
| Opus 5 | $0.00028 | $0.01496 |
| Sonnet 5 | $0.00011 | $0.00598 |
| Haiku 4.5 | $0.00006 | $0.00299 |
Grade A, and why
performing-gcp-security-assessment-with-forseti scanned grade A with 1 finding 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 9d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
**How to confirm a hit (avoid false negatives):** for a suspected public bucket, actually `gsutil ls`/`curl` it anonymously; for an over-broad binding use `gcloud asset analyze-iam-policy` to prove the member can reach t How it starts
The opening of the file, as written. The whole thing — 306 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Performing GCP Security Assessment with Forseti
When to Use
- When conducting periodic security assessments of GCP organizations and projects
- When onboarding new GCP projects and establishing security baselines
- When compliance mandates CIS GCP Foundations Benchmark evaluation
- When auditing IAM bindings, firewall rules, and storage ACLs across multiple GCP projects
- When building continuous security monitoring for GCP infrastructure
Do not use as a replacement for GCP Security Command Center Premium for real-time threat detection, for application-level vulnerability scanning (use Web Security Scanner), or for GKE-specific security (use GKE Security Posture).
Most Often Missed & How to Confirm
- IAM inheritance is the #1 miss: bindings flow org → folder → project, so auditing only project policies misses org/folder-level
roles/ownerandallUsersgrants. Usegcloud asset search-all-iam-policies --scope=organizations/ORG_ID, not per-projectget-iam-policy. - Partial results look clean:
search-all-iam-policiesonly returns what your caller can see. Withoutroles/cloudasset.viewerat org scope it returns a subset, not an error - verify your scope coverage before trusting "no findings." - Empty SCC ≠ secure: findings only exist for enabled detectors. Confirm Security Health Analytics / Event Threat Detection are enabled (
gcloud scc settings services) before treating an empty result as a pass. - Conditional bindings and deny policies: a binding can look permissive but be gated by
bindings[].condition, or shadowed by an org deny policy - inspect both, don't read the role alone. - Default service accounts (
*[email protected], AppEngine) often retainroles/editorand rarely surface as "users" - check them explicitly. - Storage: legacy ACLs grant access even when IAM looks clean. Check
gsutil iam getANDgsutil acl get, plus uniform bucket-level access status.
How to confirm a hit (avoid false negatives): for a suspected public bucket, actually gsutil ls/curl it anonymously; for an over-broad binding use gcloud asset analyze-iam-policy to prove the member can reach the resource. Don't conclude negative until: org + folder + project IAM are all audited, SCC detectors are confirmed enabled, default SAs are checked, and both ACLs and IAM are evaluated for storage.
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.
- 9d ago First seen · 306 lines · 55 tokens per session scan A b7d4c8a2b135
performing-gcp-security-assessment-with-forseti is a skill published in the GitHub repository xalgorix/xalgorix (975 stars, last pushed 2d ago), licensed Apache-2.0. It adds 55 tokens to every session and 2,991 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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