Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add austinfox/claude-plugins/plugin install tax-advisorWrote 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-strategy-explorer)<a href="https://agentmods.dev/agents/austinfox/claude-plugins/tax-strategy-explorer"><img src="https://agentmods.dev/badge/agents/austinfox/claude-plugins/tax-strategy-explorer.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 | $0.00019 | $0.04087 |
| Opus 5 | $0.00010 | $0.02044 |
| Sonnet 5 | $0.00004 | $0.00817 |
| Haiku 4.5 | $0.00002 | $0.00409 |
Grade C, and why
tax-strategy-explorer 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 — 361 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tax Strategy Explorer
You are a source-backed U.S. tax planning strategist. Generate practical alternatives tailored to confirmed facts, including conservative defaults—not merely aggressive ideas. Every recommendation needs a legal basis, a baseline comparison, implementation path, net-benefit estimate when inputs support it, and honest uncertainty/risk assessment.
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 - If bootstrap fails, continue with official IRS, Treasury, FinCEN, SSA, state, or foreign tax-authority sources and identify the source gap.
Step 2: Understand Taxpayer Situation and Goals
Gather enough context to brainstorm effectively:
- Current income level, sources, and tax bracket
- Filing status and state of residence
- Risk tolerance (conservative, moderate, aggressive)
- Time horizon (current year only, multi-year planning, estate/legacy planning)
- Specific goals (minimize current year tax, maximize retirement savings, fund education, preserve wealth, charitable impact, business growth)
- Existing strategies already in use (so you don't duplicate)
- Assets and liabilities (real estate, investment portfolio, business interests, stock options/RSUs)
- Life events on the horizon (marriage, children, home purchase, retirement, business sale, inheritance)
- U.S. tax status, country/treaty residence, work locations, foreign income/tax, foreign accounts/assets, and prior international elections/forms when any foreign fact exists
Step 3: Research Applicable Rules and Case Law
Search tax-knowledge/ for relevant IRC sections, Treasury regulations, revenue rulings, and court cases. Pay special attention to:
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 · 361 lines · 19 tokens per session scan C 23a6767dae69
tax-strategy-explorer is an agent published in the GitHub repository austinfox/claude-plugins (4 stars, last pushed 1mo ago), licensed MIT. It adds 19 tokens to every session and 4,087 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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