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 agiprolabs/claude-trading-skills --skill tax-liability-trackinggit clone --depth 1 https://github.com/agiprolabs/claude-trading-skillsWrote 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/agiprolabs/claude-trading-skills/tax-liability-tracking)<a href="https://agentmods.dev/skills/agiprolabs/claude-trading-skills/tax-liability-tracking"><img src="https://agentmods.dev/badge/skills/agiprolabs/claude-trading-skills/tax-liability-tracking/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/agiprolabs/claude-trading-skills/tax-liability-tracking"><img src="https://agentmods.dev/badge/skills/agiprolabs/claude-trading-skills/tax-liability-tracking.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00028 | $0.02158 |
| Opus 5 | $0.00014 | $0.01079 |
| Sonnet 5 | $0.00006 | $0.00432 |
| Haiku 4.5 | $0.00003 | $0.00216 |
Grade A, and why
tax-liability-tracking 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 — 222 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tax Liability Tracking
Real-time tax liability analysis purpose-built for active Solana traders. Track proportional cost basis across partial sells, classify realized vs unrealized gains, project quarterly tax obligations, and surface tax-aware signals that feed back into trading decisions.
Why This Matters
Active crypto traders generate hundreds of taxable events per year. Without real-time tracking:
- You do not know your actual after-tax P&L until year-end
- Partial sells (the "house money" play) create cost basis confusion
- Short-term vs long-term classification shifts your effective tax rate by 15-20%
- Tax-loss harvesting windows close without you noticing
- Quarterly estimated payments become guesswork
This skill keeps a running tax ledger alongside your trading activity so every decision incorporates its tax consequence.
Core Concepts
Proportional Cost Basis for Partial Sells
This is the most critical concept. When you sell a portion of a position, the cost basis splits proportionally — it does not shift to zero for the remaining tokens.
Example — The Accumulate / House-Money Play:
- Buy: 1,000 tokens at $1.00 each. Total cost basis = $1,000.
- Partial sell: Sell 800 tokens at $1.25 each. Proceeds = $1,000.
- What happened:
- The 800 sold tokens had proportional cost basis = 800 x $1.00 = $800
- Realized gain on the sale = $1,000 - $800 = $200
- The remaining 200 tokens retain cost basis = 200 x $1.00 = $200
- The remaining tokens are NOT "free" — they carry their original per-unit cost
Common mistake: Recording the partial sell as "capital recovered, remaining basis = $0." This understates the realized gain on the partial sell and overstates the gain when the remaining tokens are eventually sold. The total tax owed is the same either way, but the timing and classification (short-term vs long-term) can differ significantly.
Gain Classification
| Classification | Holding Period | US Federal Rate (2024) |
|---|---|---|
| Short-term capital gain | < 1 year | Ordinary income rate (10-37%) |
| Long-term capital gain | >= 1 year | 0%, 15%, or 20% |
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 222 lines · 28 tokens per session scan A cb7ee1ef217f
tax-liability-tracking is a skill published in the GitHub repository agiprolabs/claude-trading-skills (356 stars, last pushed 9d ago), licensed MIT. It adds 28 tokens to every session and 2,158 once invoked, about $0.0001 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 2026-08-30.
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