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-copytradinggit 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-copytrading)<a href="https://agentmods.dev/skills/spartanlabsxyz/simmer-sdk/polymarket-copytrading"><img src="https://agentmods.dev/badge/skills/spartanlabsxyz/simmer-sdk/polymarket-copytrading/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-copytrading"><img src="https://agentmods.dev/badge/skills/spartanlabsxyz/simmer-sdk/polymarket-copytrading.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 5 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high YARA Match · line 224 YARA rule matched a known malware signature (reverse shell, backdoor, ransomware, C2 framework, or info stealer).Fix: Remove the malware payload or compromised file entirely. Investigate how it entered the skill and audit all other artifacts for additional indicators of compromise.
- medium Data Exfiltration · line 132 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 132 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 192 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Rogue Agent · line 244 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 | $0.00048 | $0.05672 |
| Opus 5 | $0.00024 | $0.02836 |
| Sonnet 5 | $0.00010 | $0.01134 |
| Haiku 4.5 | $0.00005 | $0.00567 |
Grade A, and why
polymarket-copytrading 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 5d 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 -X PATCH "https://api.simmer.markets/api/sdk/user/settings" \ How it starts
The opening of the file, as written. The whole thing — 495 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Polymarket Copytrading
Mirror positions from successful Polymarket traders using the Simmer SDK. Two modes share the same skill, use whichever fits your strategy.
🚨 Framework, not a production trading system. Read DISCLAIMER.md before connecting to a wallet with real funds. Per-position cap defaults to $50; per-run cap defaults to 10 trades. Use
$SIMpaper-mode to validate any new whale selection before scaling to real USDC.
This is a template. The default logic mirrors whale wallets — remix it with your own wallet selection, sizing rules, filters, or cap logic. The skill handles all the plumbing (signal polling, trade execution, dedup, signing). Your agent provides the alpha.
| Polling mode (free) | Reactor mode (Pro) | |
|---|---|---|
| Entrypoint | copytrading_trader.py |
copytrading_trader.py --reactor |
| Cadence | Batch scan, runs on cron or manual | Polls every 2s for pre-resolved whale signals |
| Latency | Minutes (Polymarket Data API polling) | Seconds (Simmer detects events in real-time, pre-confirmation) |
| Strategy | Size-weighted aggregation across wallets, conviction tiering, rebalance to target allocations, drift/stale filters | Event-by-event mirror with fixed mirror_fraction sizing, programmatic filters |
| Best for | Portfolio-aware, multi-whale, periodic scans | Real-time reaction to specific whales as they trade |
| Requires | SIMMER_API_KEY |
SIMMER_API_KEY + Simmer Pro plan |
Setup Flow
When user asks to install or configure this skill:
-
Install the Simmer SDK (version 0.9.19 or newer — reactor mode requires it)
pip install -U 'simmer-sdk>=0.9.19' -
Ask for Simmer API key
- They can get it from simmer.markets/dashboard → SDK tab
- Store in environment as
SIMMER_API_KEY
-
Ask for wallet private key (required for live trading on Polymarket)
- This is the private key for their Polymarket wallet (the wallet that holds USDC)
- Store in environment as
WALLET_PRIVATE_KEY - The SDK uses this to sign orders client-side automatically — no manual signing needed
- Not needed for $SIM paper trading
What ships with it
7 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.
- 5d ago Changed 6e65f1f9be17
- 12d ago First seen · 495 lines · 48 tokens per session scan A 12f8e305eae5
polymarket-copytrading is a skill published in the GitHub repository SpartanLabsXyz/simmer-sdk (48 stars, last pushed today), licensed MIT. It adds 48 tokens to every session and 5,672 once invoked, about $0.0002 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 2026-08-30.
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