polymarket-copytrading

polymarket-copytrading is a skill for Claude Code, Codex from SpartanLabsXyz/simmer-sdk. It costs 48 tokens per session (5,672 once invoked), scanned A, original, MIT.

A tool for copying positions held by selected Polymarket traders, sometimes called whale wallets because they trade large amounts. It can scan periodically or mirror detected changes in near real time through Simmer.

In plain words
What is it for?
Use it to monitor chosen Polymarket wallets, copy their positions, rebalance allocations, and test wallet-selection rules with virtual $SIM currency.
Why use it?
It removes the need to watch other wallets and place matching trades manually. It includes position sizing and duplicate-trade handling, but it is a framework rather than a finished trading system.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: positional $N argument; built for openclaw.

Good fit Use it to monitor chosen Polymarket wallets, copy their positions, rebalance allocations, and test wallet-selection rules with virtual $SIM currency.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/spartanlabsxyz/simmer-sdk/polymarket-copytrading
Install

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.

Any agent
npx skills add SpartanLabsXyz/simmer-sdk --skill polymarket-copytrading
Clone the repo
git clone --depth 1 https://github.com/SpartanLabsXyz/simmer-sdk

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for polymarket-copytrading

README.md
[![agentmods](https://agentmods.dev/badge/skills/spartanlabsxyz/simmer-sdk/polymarket-copytrading/github.svg)](https://agentmods.dev/skills/spartanlabsxyz/simmer-sdk/polymarket-copytrading)
Your own site
<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.

agentmods 80×15 button for polymarket-copytrading

Your own site · 80×15
<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>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,672 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
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.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce 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

Measured 5d ago against content hash 6e65f1f9be17, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

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.

The scan reads SKILL.md. This mod also ships 4 executable files (copytrading_trader.py, scripts/status.py, tests/__init__.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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" \
skills/polymarket-copytrading/SKILL.md · 495 lines

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 $SIM paper-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:

  1. Install the Simmer SDK (version 0.9.19 or newer — reactor mode requires it)

    pip install -U 'simmer-sdk>=0.9.19'
    
  2. Ask for Simmer API key

    • They can get it from simmer.markets/dashboard → SDK tab
    • Store in environment as SIMMER_API_KEY
  3. 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

Read the full file on GitHub · 495 lines

Files

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.

Changes

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.

  1. 5d ago Changed 6e65f1f9be17
  2. 12d ago First seen · 495 lines · 48 tokens per session scan A 12f8e305eae5

Subscribe to this mod's changes

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.