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 zgbrenner/agentcounsel --skill entity-tax-classification-checklistgit clone --depth 1 https://github.com/zgbrenner/agentcounselWrote 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/zgbrenner/agentcounsel/entity-tax-classification-checklist)<a href="https://agentmods.dev/skills/zgbrenner/agentcounsel/entity-tax-classification-checklist"><img src="https://agentmods.dev/badge/skills/zgbrenner/agentcounsel/entity-tax-classification-checklist/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/zgbrenner/agentcounsel/entity-tax-classification-checklist"><img src="https://agentmods.dev/badge/skills/zgbrenner/agentcounsel/entity-tax-classification-checklist.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 | $0.00032 | $0.01391 |
| Opus 5 | $0.00016 | $0.00696 |
| Sonnet 5 | $0.00006 | $0.00278 |
| Haiku 4.5 | $0.00003 | $0.00139 |
Grade A, and why
Entity Tax Classification Checklist 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 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.
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 — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Entity Tax Classification Checklist
Purpose
Organize an entity's formation, ownership, election, and governance facts into a disciplined, source-cited facts table so qualified tax counsel can evaluate its tax classification. This skill structures the facts and frames the questions; it does not conclude classification, election validity, or tax status.
Use When
- A new or existing entity's tax classification facts must be organized for review by tax counsel.
- An ownership change, a new owner, or a contemplated election makes classification a live question.
- A transaction or diligence workstream needs the classification facts mapped before a professional evaluates them.
Required Inputs
- Entity type and jurisdiction of formation, or
not provided. - Formation date and structure, and the user's role.
- Ownership facts: members, shareholders, or partners; ownership percentages; and any ownership changes with dates as the documents state them.
- Single-member vs. multi-member, and any disregarded-entity question raised.
- Partnership, corporation, S-corporation, C-corporation, or LLC facts relevant to classification.
- Elections made or contemplated, if provided, and the documents evidencing
them (echo any election dates as
[deadline verification required]). - Governing documents: operating agreement, bylaws, partnership agreement.
- Tax filings made and any foreign-owner facts.
- Any classification uncertainty the user raises.
- Source documents with citations to sections, articles, or pages.
If entity type, jurisdiction of formation, or ownership facts are missing,
record them as not provided and return the missing-information list first.
Do Not Use When
- The request is to conclude the entity's classification or tax status.
- The request is to decide whether an election is valid, timely, or available, or to compute the tax effect of a classification.
- The request is for tax advice or a filing deadline.
Also out of scope (this skill does not): determine an entity's tax classification (disregarded entity, partnership, C corporation, S corporation); decide whether an election is valid, timely, or available; conclude tax status or consequences; compute tax; or provide tax advice.
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 · 138 lines · 32 tokens per session scan A 147bea544385
Entity Tax Classification Checklist is a skill published in the GitHub repository zgbrenner/agentcounsel (19 stars, last pushed 1mo ago), licensed MIT. It adds 32 tokens to every session and 1,391 once invoked, about $0.0002 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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