polymarket-monitor
Use this skill whenever the user wants to monitor, watch, or track Polymarket prediction market prices over time. This includes setting up price alerts, watching for significant price movements, tracking spread changes, monitoring volume spikes, or getting notified about market activity. Trigger on: monitor prices, price alert, watch market, track prices, notify me, price change, polymarket alerts, market watch, price movement, volume spike, spread monitoring, track odds, prediction market alerts, continuous monitoring, price tracker, market surveillance.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/mjunaidca/polymarket-skills --skill polymarket-monitor- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads polymarket-monitor automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Polymarket Monitor
Monitor live Polymarket prediction markets for price changes, volume spikes, and spread movements. Outputs structured JSON alerts when thresholds are crossed. All endpoints are read-only and require no API keys.
Prerequisite: This skill uses token IDs from the polymarket-scanner skill. Run scan_markets.py first to discover markets and obtain token IDs.
Quick Start
All scripts require the Python venv at /home/verticalclaw/.venv.
Monitor Multiple Markets for Price Alerts
source /home/verticalclaw/.venv/bin/activate && python polymarket-monitor/scripts/monitor_prices.py \
--token-id "<TOKEN_ID_1>" \
--token-id "<TOKEN_ID_2>" \
--interval 30 \
--threshold 5.0
This polls every 30 seconds and prints a JSON alert whenever a token's midpoint moves more than 5% from its baseline.
Watch a Single Market Live
source /home/verticalclaw/.venv/bin/activate && python polymarket-monitor/scripts/watch_market.py \
--token-id "<TOKEN_ID>" \
--interval 15
Prints a JSON snapshot every 15 seconds with price, spread, and order book depth.
Scripts
monitor_prices.py
Polls multiple tokens at a set interval and emits JSON alerts when price changes exceed a threshold.
Arguments:
--token-id ID— CLOB token ID to monitor (repeatable, at least one required)--interval N— Polling interval in seconds (default: 30, minimum: 5)--threshold N— Percentage change to trigger an alert (default: 5.0)--max-polls N— Stop after N polls (default: unlimited, use for non-interactive runs)--baseline-window N— Number of recent prices to average for baseline (default: 1, meaning compare to last poll)
Output: One JSON object per line for each alert:
{
"type": "price_alert",
"token_id": "...",
"timestamp": "2026-02-26T12:00:00Z",
"current_price": 0.65,
"baseline_price": 0.60,
"change_pct": 8.33,
"direction": "up",
"spread": 0.02,
"poll_number": 5
}
Non-alert polls print a status line to stderr so the agent knows monitoring is active.
watch_market.py
Continuously monitors a single market, printing a JSON snapshot each interval with price, spread, volume, and order book summary.
Arguments:
--token-id ID— CLOB token ID to watch (required)--interval N— Snapshot interval in seconds (default: 15, minimum: 5)--max-polls N— Stop after N snapshots (default: unlimited)
Output: One JSON object per line per snapshot:
{
"type": "market_snapshot",
"token_id": "...",
"timestamp": "2026-02-26T12:00:00Z",
"midpoint": 0.55,
"best_bid": 0.54,
"best_ask": 0.56,
"spread": 0.02,
"bid_depth": 15000.0,
"ask_depth": 12000.0,
"last_trade_price": 0.55,
"last_trade_side": "BUY",
"poll_number": 1
}
Data Flow
- Run
polymarket-scanner/scripts/scan_markets.pyto find markets and get token IDs - Pass token IDs to
monitor_prices.pyfor multi-market alerting - Or pass a single token ID to
watch_market.pyfor detailed single-market tracking
Monitoring Guide
For recommended thresholds by market type and advanced monitoring strategies, see references/monitoring-guide.md.
FAQ
What does the polymarket-monitor skill do?
Use this skill whenever the user wants to monitor, watch, or track Polymarket prediction market prices over time. This includes setting up price alerts, watching for significant price movements, tracking spread changes, monitoring volume spikes, or getting notified about market activity. Trigger on: monitor prices, price alert, watch market, track prices, notify me, price change, polymarket alerts, market watch, price movement, volume spike, spread monitoring, track odds, prediction market alerts, continuous monitoring, price tracker, market surveillance.
How do I install polymarket-monitor?
Run npx skills add https://github.com/mjunaidca/polymarket-skills --skill polymarket-monitor in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/polymarket-monitor/ (personal) or .claude/skills/polymarket-monitor/ (project).
Which AI agents can use polymarket-monitor?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is polymarket-monitor safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains polymarket-monitor?
It is published by mjunaidca in mjunaidca/polymarket-skills. It has 215 recorded installs.
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