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 SpartanLabsXyz/simmer-sdk --skill polymarket-btc-up-down-tradergit clone --depth 1 https://github.com/SpartanLabsXyz/simmer-sdkWrote 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/spartanlabsxyz/simmer-sdk/polymarket-btc-up-down-trader)<a href="https://agentmods.dev/skills/spartanlabsxyz/simmer-sdk/polymarket-btc-up-down-trader"><img src="https://agentmods.dev/badge/skills/spartanlabsxyz/simmer-sdk/polymarket-btc-up-down-trader/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/spartanlabsxyz/simmer-sdk/polymarket-btc-up-down-trader"><img src="https://agentmods.dev/badge/skills/spartanlabsxyz/simmer-sdk/polymarket-btc-up-down-trader.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 | $0.00075 | $0.02539 |
| Opus 5 | $0.00037 | $0.01269 |
| Sonnet 5 | $0.00015 | $0.00508 |
| Haiku 4.5 | $0.00007 | $0.00254 |
Grade A, and why
polymarket-btc-up-down-trader 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 — 224 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Polymarket BTC Up-Down Trader
Trade Polymarket's BTC daily and weekly UP/DOWN markets with built-in exit discipline. Enters on Binance momentum signals, exits automatically before resolution tail risk bites.
🚨 Framework, not a production trading system. Read DISCLAIMER.md before connecting to a wallet with real funds.
Polymarket only. All trades execute on Polymarket with real USDC. Use
--livefor real trades; default is dry run.
Not for fast (5m/15m) markets. Use
polymarket-fast-loopfor those. This skill targets daily and weekly BTC direction markets with hours-to-days of duration.
⚠️ BTC UP/DOWN markets carry Polymarket's crypto taker fee. Effective rate is 3.5% at 50¢, up to ~6.6% on cheap shares. Makers pay 0% and earn a 20% rebate from collected taker fees. Factor this into your minimum edge threshold.
Oracle-Engineering Halt Gate
This skill includes a built-in oracle-engineering risk detector (simmer_sdk.risk.OracleEngineeringDetector). It is enabled by default for all short-dated markets (≤ 5 minutes to resolution).
The gate fires a RESOLUTION_TAMPER_RISK halt when both signals diverge within the final 5 minutes of the resolution window:
- PM concentration ≥ 60% of one side's open interest held by the top wallet(s)
- Spot flow imbalance ≥ 2σ on the underlying (Binance BTC/USDC) in the same direction that benefits the concentrated PM position
When the gate fires:
- Market-maker mode: spreads widened ≥ 3×; no new fills accepted
- Copytrade mode: trade skipped for this cycle
- All modes: decision logged with
risk_flag=oracle_engineering
This is a defensive halt only. Do not use it as a buy signal or to copy the attacker's position. See simmer_sdk/risk/oracle_engineering.py for the full detector implementation and shared-knowledge/entities/concepts/oracle-engineering.md for threat-model background.
When to Use This Skill
Use this skill when the user wants to:
- Trade BTC daily or weekly UP/DOWN prediction markets on Polymarket
- Apply systematic exit discipline (don't hold to settlement)
- Use CEX price momentum as the entry signal
- Monitor open positions and auto-exit when targets are hit
What ships with it
5 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 · 224 lines · 75 tokens per session scan A 600c6c907a26
polymarket-btc-up-down-trader is a skill published in the GitHub repository SpartanLabsXyz/simmer-sdk (48 stars, last pushed today), licensed MIT. It adds 75 tokens to every session and 2,539 once invoked, about $0.0004 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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