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joellewis avatar

Commodities

joellewis/finance_skills
513 installs164 stars
Summary

This one handles commodity markets with a focus on the stuff that actually matters: futures curve dynamics, roll yield, and why your commodity ETF returns don't match the spot price movements you see on TV. It breaks down contango and backwardation mechanics, walks through the three components of commodity returns (spot, roll, collateral), and covers the major indices like GSCI and BCOM. The worked examples are solid, showing how brutal roll yield can be in steep contango. Use it when someone asks about oil prices, gold as a safe haven, or why their commodity fund underperformed despite prices going up. The cost-of-carry model and convenience yield formulas are all here if you need the theory.

Install to Claude Code

npx -y skills add joellewis/finance_skills --skill commodities --agent claude-code

Installs into .claude/skills of the current project.

CodeRabbit
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Plug Mailtrap into your AI workflow and let it handle the email.
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Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
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Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
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Integrate web data into your AI product. One API to scrape website & brand data.
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belt - the only tool your agent needs
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belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
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inference shell
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create and run specialised agents in minutes
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CodeRabbit
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AI writes the code. CodeRabbit catches the slop.
Try For Free →
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MCP-ready Email Sending
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →
Make your agent a DeFi expert
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Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Capacitor - Shared memory for your team’s coding agents.
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Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →
CodeScene MCP ServerCodeScene MCP Server
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Try For Free →
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Integrate web data into your AI product. One API to scrape website & brand data.
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Files
SKILL.md

Select a file.

Featured
CodeRabbit
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AI writes the code. CodeRabbit catches the slop.
Try For Free →
MCP-ready Email SendingMCP-ready Email Sending
MCP-ready Email Sending
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →
Make your agent a DeFi expert
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Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Capacitor - Shared memory for your team’s coding agents.
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Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →
CodeScene MCP ServerCodeScene MCP Server
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Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →
Give your AI the whole web as clean markdownGive your AI the whole web as clean markdown
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Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
belt - the only tool your agent needs
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belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
inference shell
inference shell
create and run specialised agents in minutes
build now →
Categories
Finance & Trading
First SeenJun 3, 2026
View on GitHub

More from joellewis/finance_skills

All 84 skills →
  • Quantitative Valuation507
  • Order Lifecycle503
  • Finance Psychology496
  • Account Transfers495
  • Market Data487
  • Investment Policy483
  • Currencies And Fx465
  • Trade Execution465
  • Debt Management464
  • Privacy Data Security464
  • Data Quality461
  • Rebalancing461
  • Financial Planning Integration460
  • Financial Planning Workflow459
  • Historical Risk458
  • Advertising Compliance457
  • Volatility Modeling457
  • Liquidity Management455
  • Portfolio Management Systems455
  • Time Value Of Money454
  • Performance Metrics453
  • Performance Reporting453
  • Diversification452
  • Emergency Fund450

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order-lifecycle

joellewis/finance_skills

Guide the design and implementation of order lifecycle management in trading systems. Owns FIX application-layer message flows (NewOrderSingle, ExecutionReport, cancel/replace) and order state. Use when building an order state machine for an OMS or EMS, handling cancel/replace race conditions, defining pre-submission validation rules (buying power, position limits, restricted lists), selecting order types and time-in-force instructions, designing multi-leg or OCO or bracket orders, building CAT-compliant audit trails, troubleshooting order rejections or unexpected state transitions, hardening an OMS against edge cases, or implementing order persistence and recovery for failover. Also covers execution-report handling, ClOrdID chaining, and partial fill aggregation. For FIX session management (logon, sequence gaps, disconnects) see exchange-connectivity.
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market-data

joellewis/finance_skills

Design and manage market data infrastructure — real-time and delayed feeds, Level 1/2/3 depth, consolidated tape vs direct feeds, vendor selection, licensing, and distribution architecture. Use when choosing between real-time and delayed data, evaluating market data vendors like Bloomberg or Refinitiv, designing ticker plants or fan-out architecture, managing exchange data licensing and entitlements, diagnosing stale quotes or missing ticks, deciding between SIP and direct exchange feeds, or assessing Level 2/3 depth-of-book requirements for trading. Trigger on: market data, Level 1/2/3, depth of book, consolidated tape, SIP, direct feed, NBBO, ticker plant, B-PIPE, data license, non-display use, market data entitlements, conflation, tick data, real-time feed.
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joellewis avatar
currencies-and-fx

joellewis/finance_skills

Analyze currency markets, exchange rate mechanics, and FX risk management for international portfolios. Use when the user asks about exchange rates, FX hedging, interest rate parity, carry trades, forward premiums, cross rates, or currency overlay programs. Also trigger when users mention 'strong dollar', 'weak euro', 'hedging foreign stocks', 'purchasing power parity', 'currency risk in my portfolio', 'EUR/USD', 'yen carry trade', or ask whether to hedge international investments.
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Trade prediction markets on Polymarket - buy outcome tokens (YES/NO and categorical markets), check positions, list markets, manage orders, redeem winning tokens, and deposit funds on Polygon. Trigger phrases: buy polymarket shares, sell polymarket position, check my polymarket positions, list polymarket markets, get polymarket market, cancel polymarket order, redeem polymarket tokens, polymarket yes token, polymarket no token, prediction market trade, polymarket price, get started with polymarket, just installed polymarket, how do I use polymarket, set up polymarket, polymarket quickstart, new to polymarket, polymarket setup, help me trade on polymarket, place a bet on, buy prediction market, bet on, trade on prediction markets, prediction trading, place a prediction market bet, i want to bet on, deposit, top up, fund, transfer in, add funds, fund polymarket, top up polymarket, add funds to polymarket, recharge polymarket, deposit usdc, deposit eth, polymarket deposit, BTC 5-minute, E
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joellewis avatar
time-value-of-money

joellewis/finance_skills

Calculate present value, future value, NPV, IRR for projects and loans, loan payments, and amortization schedules across all compounding conventions. Use when the user asks about discounting cash flows, valuing an annuity or perpetuity, comparing investments with different timing, building a mortgage amortization table, evaluating whether a project is worth pursuing, or solving for the rate that equates cash flows (project IRR, loan IRR, yield on an investment). Also trigger when users mention 'what is it worth today', 'how much will I have in 20 years', 'monthly payment on a loan', 'discount rate', 'Gordon growth model', 'effective annual rate', 'continuous compounding', or ask how to compare a lump sum versus a stream of payments. For portfolio money-weighted return (dollar-weighted IRR on an investor's contributions and withdrawals), use return-calculations instead.
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joellewis avatar
bet-sizing

joellewis/finance_skills

Determine how much capital to allocate to individual positions within a portfolio. Use when the user asks about position sizing, the Kelly criterion, fractional Kelly, risk budgeting, or conviction weighting. Also trigger when users mention 'how much to put in one stock', 'maximum position size', 'how concentrated should my portfolio be', 'number of holdings', 'VaR budget per position', 'how big a bet', or ask about scaling position sizes with volatility.
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