Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add janegilring/awesome-azure-landing-zones --skill caf-billing-entra-tenantgit clone --depth 1 https://github.com/janegilring/awesome-azure-landing-zonesWrote 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/janegilring/awesome-azure-landing-zones/caf-billing-entra-tenant)<a href="https://agentmods.dev/skills/janegilring/awesome-azure-landing-zones/caf-billing-entra-tenant"><img src="https://agentmods.dev/badge/skills/janegilring/awesome-azure-landing-zones/caf-billing-entra-tenant/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/janegilring/awesome-azure-landing-zones/caf-billing-entra-tenant"><img src="https://agentmods.dev/badge/skills/janegilring/awesome-azure-landing-zones/caf-billing-entra-tenant.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 | $0.00177 | $0.01113 |
| Opus 5 | $0.00088 | $0.00557 |
| Sonnet 5 | $0.00035 | $0.00223 |
| Haiku 4.5 | $0.00018 | $0.00111 |
Grade A, and why
caf-billing-entra-tenant 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 12d 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 — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Azure billing and Microsoft Entra tenant
Overview
This is the foundational design area: before any landing zone exists you must decide which Microsoft Entra tenant is the identity and security boundary for the environment and how Azure consumption is billed and organized. These choices are deliberately hard to reverse — the tenant is the root of trust and the billing hierarchy frames cost ownership for the whole estate. Most organizations should target a single production tenant and add tenants only for hard isolation requirements.
When to use this skill
- Deciding whether to use an existing Entra tenant or create a new one.
- Choosing and structuring the billing agreement (EA, MCA, or CSP) and its scopes.
- Planning the enrollment / billing hierarchy (departments, accounts, invoice sections).
- Evaluating a single-tenant vs multi-tenant strategy (e.g. dev/test isolation, M&A, sovereignty).
- Establishing ownership and emergency access for the tenant and billing accounts.
Key concepts
- Microsoft Entra tenant — the identity boundary. One tenant can contain many subscriptions and management groups; trust, users, and Conditional Access are tenant-scoped.
- Billing account — the top of the billing hierarchy, tied to the agreement type:
- Enterprise Agreement (EA): Billing account → Department → Account → Subscription.
- Microsoft Customer Agreement (MCA): Billing account → Billing profile → Invoice section → Subscription.
- Cloud Solution Provider (CSP): subscriptions provisioned and billed via a partner.
- Billing roles are separate from Azure RBAC — they govern who can create subscriptions, view invoices, and manage the agreement.
- Tenant vs subscription: billing lives with the agreement; the subscription is the unit of consumption that is associated to one tenant at a time.
- Multi-tenant ALZ — supported but adds operational cost (identity, governance, and tooling must span tenants). Use only when isolation is a genuine requirement.
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.
- 12d ago First seen · 84 lines · 177 tokens per session scan A f55cd1f31bec
caf-billing-entra-tenant is a skill published in the GitHub repository janegilring/awesome-azure-landing-zones (3 stars, last pushed 2mo ago), licensed MIT. It adds 177 tokens to every session and 1,113 once invoked, about $0.0009 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.
Other skills, from other repositories
sector-rotation
An analysis framework for comparing industries in the Chinese A-share stock market, using business conditions, price momentum, valuation, and money flows. It produces rankings and higher- or lower-allocation suggestions.
strategy-pivot-designer
Detect backtest iteration stagnation and generate structurally different strategy pivot proposals when parameter tuning reaches a local optimum.
twitter-reader
Read Twitter/X for financial research using opencli (read-only). Use this skill whenever the user wants to read their Twitter feed, search for financial tweets, view bookmarks, look up user profiles, or gather market sentiment from Twitter/X. Triggers include: "check my feed", "search Twitter for", "show my…
chenhao-limit-up
A framework for judging Chinese A-share stocks that have reached the daily price-rise limit, using market mood, sector leadership, and trading momentum.
furusato
A Japanese hometown-tax donation manager for furusato nozei, a system where donations to municipalities can qualify for an income-tax or local-tax deduction. It reads donation receipts, stores donation records, and calculates deduction limits.
reading-receipt
An image-reading workflow for extracting structured information from receipts, invoices, and hometown-tax donation certificates. It can first extract text from PDFs and otherwise read their images.