Claude Trading Skills is a collection of Claude Code workflows for individual investors who want structured market analysis, charting, economic-calendar review, screening, trade planning, journaling, and risk management. It is designed for people using long-term investing, ETFs, dividend stocks, and disciplined swing trading, and the catalogue entries package these workflows as skills, agents, commands, settings, and instructions.
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 tradermonty/claude-trading-skills --skill futures-position-sizergit clone --depth 1 https://github.com/tradermonty/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/tradermonty/claude-trading-skills/futures-position-sizer)<a href="https://agentmods.dev/skills/tradermonty/claude-trading-skills/futures-position-sizer"><img src="https://agentmods.dev/badge/skills/tradermonty/claude-trading-skills/futures-position-sizer/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/tradermonty/claude-trading-skills/futures-position-sizer"><img src="https://agentmods.dev/badge/skills/tradermonty/claude-trading-skills/futures-position-sizer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- 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 | $0.00114 | $0.02703 |
| Opus 5.5 | $0.00046 | $0.01081 |
| Sonnet 5.5 | $0.00023 | $0.00541 |
| Haiku 4.5 | $0.00011 | $0.00270 |
Grade A, and why
futures-position-sizer 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 3d 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 — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Futures Position Sizer
Overview
Shapiro pipeline step 4: convert a direction, entry price, and stop-loss into a contract count, given an account risk budget and a verified contract spec (multiplier, tick size, tick value). This is a NEW, separate skill from position-sizer -- futures contracts are leveraged, multiplier-based instruments with wildly different dollar-per-point values (a $0.25 move is $12.50 on ES but $5.00 on NQ and $31.25 on ZB); reusing the equity share-count sizer for futures would silently produce wrong position sizes.
Two ways to size a trade:
- Mode A (explicit): supply
--symbol --direction --entry --stopdirectly. - Mode B (gate handoff): supply
--gate-json <contrarian-setup-gate report> --entry. Direction and stop (the gate'sinvalidation_level) come from the gate'sREADY_FOR_PLANreport -- the sizer never sizes a setup the gate has not confirmed as READY, and never accepts an explicit--direction/--stopalongside--gate-json(the gate is authoritative when provided).
--entry is ALWAYS required, in both modes -- neither this skill nor the gate ever derives an entry price; the operator supplies it.
When to Use
- After
contrarian-setup-gatereachesREADY_FOR_PLANand you need a contract count for the confirmed direction and stop - User asks "how many ES/NQ/GC/CL/... contracts should I trade?"
- User has a futures trade idea with a known entry and stop and wants risk-based sizing
- User wants to check the verified contract spec (multiplier/tick size/tick value) for a symbol before sizing (
--list-specs)
Prerequisites
- Python 3.9+, standard library only -- no API keys, fully offline
- A direction, entry, and stop (mode A), or a
contrarian-setup-gateJSON report withsetup_status: READY_FOR_PLAN(mode B) - For a symbol outside the verified 23-market core table: its multiplier, tick size, and quote currency (all three, together)
Workflow
Step 1: Size the Position
Mode A -- explicit:
What ships with it
8 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.
- references/futures-contract-specs.md 11 KB
- references/sizing-methodology.md 13 KB
- requirements.txt 70 B
- scripts/futures_position_sizer.py 17 KB runs code
- scripts/futures_sizing.py 50 KB runs code
- scripts/tests/conftest.py 227 B runs code
- scripts/tests/test_futures_position_sizer.py 42 KB runs code
- scripts/tests/test_futures_sizing.py 42 KB runs code
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.
- 3d ago Changed · +2 lines 4ffecedcbe62
- 1mo ago First seen · 141 lines · 114 tokens per session scan A ab288bfc8edc
futures-position-sizer is a skill published in the GitHub repository tradermonty/claude-trading-skills (3,373 stars, last pushed yesterday), licensed MIT. It adds 114 tokens to every session and 2,703 once invoked, about $0.0005 per session on Opus 5.5. 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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