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/catpilotai/catpilot-ai-guardrailsnpx agentmods add skills/catpilotai/catpilot-ai-guardrails/catpilot-security-coreWrote 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/catpilotai/catpilot-ai-guardrails/catpilot-security-core)<a href="https://agentmods.dev/skills/catpilotai/catpilot-ai-guardrails/catpilot-security-core"><img src="https://agentmods.dev/badge/skills/catpilotai/catpilot-ai-guardrails/catpilot-security-core/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/catpilotai/catpilot-ai-guardrails/catpilot-security-core"><img src="https://agentmods.dev/badge/skills/catpilotai/catpilot-ai-guardrails/catpilot-security-core.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00110 | $0.34508 |
| Opus 5 | $0.00055 | $0.17254 |
| Sonnet 5 | $0.00022 | $0.06902 |
| Haiku 4.5 | $0.00011 | $0.03451 |
Grade A, and why
catpilot-security-core 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 3,648 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Catpilot Security Core
Catpilot's universal security baseline for AI coding agents. The nine components in this bundle are always-on. They apply on every file write, diff review, and shell command the agent is about to run, regardless of language or framework.
Each component below is a self-contained skill with its own rules, detection
patterns, and remediation guidance. Component IDs match the entries in
metadata.catpilot.bundle.components in the frontmatter so a finding can be
mapped back to a specific source skill (and to its severity, version, and
control mappings).
This bundle is generated deterministically from
src/skills/core/<id>/SKILL.md by tools/bundle.py in the
ToomeSauce/catpilot-ai-guardrails repository. Edits to this file are
overwritten on the next bundle. To change behavior, edit the corresponding
source skill and rebuild.
cloud-cli-safety
Why
This skill exists because of a specific outage.
An AI assistant was asked to update the liveness probe on an Azure Container
App. It generated a small YAML file containing only the probes: block and
ran:
az containerapp update --yaml probes-only.yaml
The Azure Resource Manager API treats --yaml as a full-resource
replacement, not a patch. Every field absent from the file was reset to
its default. Within seconds:
- CPU dropped from 2.0 cores to 0.5 (default) — 75% capacity loss.
- Memory dropped from 4 GiB to 1 GiB — 75% loss.
- Every environment variable was deleted, including database connection strings and third-party API keys.
- Liveness probes started failing because the app could no longer reach the database.
- The service was effectively down until env vars were restored from a separate vault and the container was re-provisioned.
The agent did exactly what it was told. The CLI did exactly what it was documented to do. The failure was at the seam: the agent did not query the existing state, did not show the operator the full blast radius, and did not prepare a rollback before pressing enter.
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.
- 11d ago First seen · 3,648 lines · 110 tokens per session scan E 90c01b5ab0d6
catpilot-security-core is a skill published in the GitHub repository catpilotai/catpilot-ai-guardrails (2 stars, last pushed 2mo ago), licensed MIT. It adds 110 tokens to every session and 34,508 once invoked, about $0.0006 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.
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