headcount is an organization of independently installable Claude Code plugins, each grouping skills for a department such as finance, security, or demand generation. Claude Code users install the departments they need and invoke their skills for specialized work; the catalogue entries are skills and related agent tooling from that organization.
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 agentmods add skills/cbrock84/headcount/taxnpx skills add cbrock84/headcount --skill taxgit clone --depth 1 https://github.com/cbrock84/headcountWrote 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/cbrock84/headcount/tax)<a href="https://agentmods.dev/skills/cbrock84/headcount/tax"><img src="https://agentmods.dev/badge/skills/cbrock84/headcount/tax.svg" alt="Measured on agentmods" 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 | $0.00075 | $0.00711 |
| Opus 5 | $0.00037 | $0.00356 |
| Sonnet 5 | $0.00015 | $0.00142 |
| Haiku 4.5 | $0.00007 | $0.00071 |
Grade A, and why
tax 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 yesterday.
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 — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tax
Tax obligations are created by facts — where you sell, where people work, what you sell — not by decisions anyone consciously makes. The characteristic failure is discovering an obligation years after it began, with penalties and interest attached.
This structures the question and tells you what to ask. Tax is technical, jurisdiction-specific, and changes frequently. Positions on anything material belong with a qualified tax adviser or CPA, not a checklist.
Nexus: the thing that creates obligations quietly
Nexus is the connection that gives a jurisdiction the right to tax you. It is established by activities most companies do not think of as tax events:
- An employee working somewhere. One remote hire in a new state commonly creates payroll registration, income tax withholding, and often corporate income tax nexus.
- Economic activity without physical presence. Since Wayfair, US states set sales-tax nexus on revenue or transaction thresholds — a few hundred thousand dollars, or a couple of hundred transactions, with the numbers differing by state.
- Inventory held somewhere, including in a third-party fulfillment warehouse you never visit.
- Contractors, or attending trade shows, in some jurisdictions.
Review nexus whenever you hire in a new location, cross a revenue threshold, or change how you distribute. Registering late costs more than registering early, and voluntary disclosure programs exist precisely because this is so common.
Sales tax is about what you sell, not what you charge
Taxability of software and services varies enormously by state: SaaS is taxable in some, exempt in
others, and treated differently again if delivered with implementation services. The classification
of your own product is a determination worth getting in writing and revisiting when packaging
changes — see revenue:pricing-and-packaging, because bundling can change the answer.
Exemption certificates for tax-exempt customers must be collected and kept current. In an audit, missing certificates mean you owe the tax you did not collect.
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.
- yesterday First seen · 64 lines · 75 tokens per session scan A 735000042558
tax is a skill published in the GitHub repository cbrock84/headcount (1,247 stars, last pushed 2d ago), licensed MIT. It adds 75 tokens to every session and 711 once invoked, about $0.0004 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 2026-09-03.
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