An automated prediction market scanner and trading agent that leverages the Simmer API to identify and execute high-probability trades.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install polymarket-scanner
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install polymarket-scanner using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Polymarket Scanner?
The Polymarket Scanner is a sophisticated technical tool designed to bridge the gap between market data and execution. By utilizing the Simmer API, this agent scans decentralized prediction markets to find mispriced assets based on divergence and momentum. As a core component of Openclaw Skills, it allows developers and traders to automate the tedious process of market monitoring, ensuring that every trading opportunity is evaluated against strict risk parameters before execution.
This skill is built for those who require precision in their trading strategies. It supports both virtual trading for strategy testing and real USDC execution for live markets. By integrating this into your workflow, you leverage a system that prioritizes data-driven events and cross-platform arbitrage to maximize your prediction market performance.
Polymarket Scanner Use Cases
- Identifying price divergence between Polymarket and external data sources for arbitrage.
- Automating high-frequency scans of top-tier prediction market opportunities.
- Managing a portfolio of positions with built-in stop-loss and daily limit controls.
- Testing new trading strategies using virtual currency before committing real capital via Openclaw Skills.
How Polymarket Scanner Works
- The agent authenticates with the Simmer API to retrieve real-time market data and account status.
- A specialized scanning script processes the top 20 market opportunities, calculating scores based on divergence and risk warnings.
- Trading rules are applied to filter results, checking against predefined limits for single trades, daily volume, and maximum positions.
- For virtual trades, the skill executes orders automatically; for real USDC trades, it prepares the transaction for manual human confirmation.
- All activities, including skipped opportunities and executed trades, are recorded in a local log file for auditing.
Polymarket Scanner Setup
To get started, you must obtain a Simmer API key from the Simmer Markets dashboard. Once you have your credentials, configure your environment and run the scanner using the following commands within your Openclaw Skills setup:
export SIMMER_API_KEY='your_api_key_here'
# To check your current balance and agent status
python scripts/scanner.py --status
# To begin an automated market scan
python scripts/scanner.py
Polymarket Scanner Data Schema & Taxonomy
The skill organizes its operational data using a flat-file logging system and structured API responses. Below is the metadata taxonomy used for market analysis:
| Field | Description |
|---|---|
| trading_log.jsonl | The primary ledger for all scans, warnings, and execution results. |
| Opportunity Score | A weighted metric (25+ for SIM, 40+ for USDC) determining trade viability. |
| Divergence | The percentage difference between current market price and target price. |
| Risk Warnings | Automated flags for low liquidity or high spreads (>10%) that trigger an auto-skip. |
Polymarket Scanner Advanced Features
- Dual-mode execution supporting both virtual $SIM and real USDC trading environments.
- Automated risk mitigation including mandatory stop-loss thresholds and position caps.
- Momentum shift detection to capitalize on rapid price movements in volatile markets.
- Seamless integration with Cron for scheduled, hands-off market monitoring using Openclaw Skills.
SKILL.md
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