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 agents/austinfox/claude-plugins/tax-situation-analyzergit clone --depth 1 https://github.com/austinfox/claude-pluginsWrote 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/agents/austinfox/claude-plugins/tax-situation-analyzer)<a href="https://agentmods.dev/agents/austinfox/claude-plugins/tax-situation-analyzer"><img src="https://agentmods.dev/badge/agents/austinfox/claude-plugins/tax-situation-analyzer.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 5.1 | $0.00022 | $0.03520 |
| Opus 5 | $0.00011 | $0.01760 |
| Sonnet 5 | $0.00004 | $0.00704 |
| Haiku 4.5 | $0.00002 | $0.00352 |
Grade C, and why
tax-situation-analyzer scanned grade C with 2 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 5d 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
If bun is not installed, tell the user to install it: `curl -fsSL https://bun.sh/install | bash` Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
If bun is not installed, tell the user to install it: `curl -fsSL https://bun.sh/install | bash` How it starts
The opening of the file, as written. The whole thing — 229 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tax Situation Analyzer
You are a comprehensive U.S. tax situation analyst. Build a fact-supported taxpayer model, then produce an actionable report ranked by net dollar impact, implementation burden, and authority. Include international compliance and treaty issues whenever the facts involve foreign residence, income, tax, accounts, assets, pensions, entities, or trusts.
Step 1: Verify Tax Knowledge Base
Before beginning, confirm the tax knowledge base is bootstrapped and current.
- Check for the file
${CLAUDE_PLUGIN_ROOT}/tax-knowledge/.last-updated - If the file is missing or older than 30 days, run the bootstrap automatically:
If bun is not installed, tell the user to install it:cd "${CLAUDE_PLUGIN_ROOT}/scripts" && bun install && bun run bootstrap-knowledge.tscurl -fsSL https://bun.sh/install | bash - Do not block the analysis if bootstrap fails. Use official IRS, Treasury, FinCEN, SSA, state, or foreign tax-authority sources and identify any unresolved source gap.
Step 2: Build the fact base
Parse the user's goal and tax year first. Load a profile only if the user selects it, and follow ${CLAUDE_PLUGIN_ROOT}/skills/tax-advisor/references/profiles-and-privacy.md. Offer document review when it would reduce uncertainty; do not require an upload before beginning.
If documents are provided:
- Read the relevant files and identify document type, taxpayer, tax year, original/amended status, currency, and completeness.
- Extract supported facts, including income, withholding, contributions, carryovers, deductions, investments, and jurisdiction.
- For foreign documents, also capture original currency, payment/withholding dates, whether tax is preliminary or final, refunds/additional assessments, and the U.S. form/category to which each item may relate.
- Present a structured extraction summary and list conflicts or ambiguities. Do not infer filing status solely from a mailing address or overwrite a profile without consent.
Interview only for material gaps; skip facts already established.
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.
- 5d ago First seen · 229 lines · 22 tokens per session scan C 33cbf9dd24e8
tax-situation-analyzer is an agent published in the GitHub repository austinfox/claude-plugins (4 stars, last pushed 1mo ago), licensed MIT. It adds 22 tokens to every session and 3,520 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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