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 san-npm/skills-ws --skill polymarket-tradinggit clone --depth 1 https://github.com/san-npm/skills-wsWrote 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/san-npm/skills-ws/polymarket-trading)<a href="https://agentmods.dev/skills/san-npm/skills-ws/polymarket-trading"><img src="https://agentmods.dev/badge/skills/san-npm/skills-ws/polymarket-trading/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/san-npm/skills-ws/polymarket-trading"><img src="https://agentmods.dev/badge/skills/san-npm/skills-ws/polymarket-trading.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00079 | $0.05018 |
| Opus 5 | $0.00039 | $0.02509 |
| Sonnet 5 | $0.00016 | $0.01004 |
| Haiku 4.5 | $0.00008 | $0.00502 |
Grade A, and why
polymarket-trading scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl "https://data-api.polymarket.com/positions?user=$POLYMARKET_WALLET" How it starts
The opening of the file, as written. The whole thing — 284 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Polymarket Sports Prediction Markets
⚠️ FINANCIAL & LEGAL RISK DISCLAIMER — READ FIRST
This skill moves real money into a speculative prediction market. Capital is at risk and you can lose 100% of any stake. There are no guaranteed payouts. Past results never predict future outcomes, and "high-conviction favorites" lose routinely.
- This is not financial advice. It is an analysis-and-execution aid only. You are solely responsible for every trade.
- Legality varies by jurisdiction and changes fast. Prediction-market / event-contract access may be restricted, KYC-gated, or outright illegal where you live. As of mid-2026: the international Polymarket exchange is geoblocked for US IPs (2022 CFTC settlement); a separate Polymarket US venue (operated by QCX LLC, a CFTC-regulated DCM) requires full KYC and USD settlement; and several US states have challenged or banned prediction markets (e.g. Minnesota ban effective 1 Aug 2026). Verify your own eligibility before doing anything: https://polymarket.com and https://help.polymarket.com.
- You must comply with KYC, age limits, the platform Terms of Service, sanctions rules, and local gambling law. Do not attempt to bypass geoblocks or KYC.
- You are responsible for your own taxes and record-keeping on any winnings/losses. Consult a qualified professional.
- Practice responsible gambling. Set a hard bankroll and loss limit, never stake money you cannot afford to lose, and stop when you hit your limit. (US: 1-800-GAMBLER.)
Run the read-only scan freely. Never execute a trade without explicit, per-trade user confirmation of amount, market, outcome, token ID, chain, max price, and worst-case loss.
⚠️ STRATEGY RULES (Non-Negotiable)
- Sports markets only by default — This skill is scoped to sports moneylines. Avoid politics, crypto, and geopolitics markets here: they are harder to price from a clean odds benchmark, can move on non-public information, and have thinner, more reflexive liquidity. This is a scoping choice, not a claim that any specific market is rigged.
- De-vig before you judge a favorite — Raw
1/decimal_oddsincludes the bookmaker's margin (vig) and overstates probability. Always normalize per bookmaker (see "De-vig math") before applying any probability threshold. Minimum 70% de-vigged consensus probability to qualify as a favorite. - Require positive expected value (+EV) — A favorite is only a trade if the executable Polymarket price is below the de-vigged true probability after fees and slippage. Win rate is not EV: a true 70% favorite bought at 0.75 is negative EV and must be skipped. See "Edge & EV".
- No long shots. Low-probability / high-payout punts are out of scope.
- The best trade is sometimes no trade — If nothing clears the de-vig + +EV bar, say so. Never lower the threshold to manufacture a pick.
- Verify the Polymarket market exists — Many matches are not listed. Never recommend a bet without confirming the PM market and resolving the correct outcome
token_id. - Size by bankroll and liquidity, not by conviction — Bet size is not unlimited. It is capped by (a) your pre-set bankroll/loss limit, (b) order-book depth at your price (slippage), and (c) any platform/market limits. See "Position sizing".
- Football 3-way markets need care — Win/Draw/Lose means a "win" outcome is priced against two alternatives. De-vig across all three outcomes per bookmaker; never compare a 2-way PM price to a non-normalized 3-way book number.
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.
- 11d ago First seen · 284 lines · 79 tokens per session scan A eb282607b278
polymarket-trading is a skill published in the GitHub repository san-npm/skills-ws (2 stars, last pushed 4d ago), licensed MIT. It adds 79 tokens to every session and 5,018 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (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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