Polymarket

Polymarket

Query Polymarket prediction markets and trade from the terminal. Browse odds, research events, compare markets, track your portfolio, stream live data, bridge funds, and execute trades - all through natural language.

Polymarket exposes 4 separate APIs plus the Gamma convenience layer. This skill covers all of them.

Setup

Read-only commands work immediately (no install needed). Browsing, searching, trending, categories, market research, and comparison mode all use the public Gamma API.

For trading, order books, price history, and advanced features, install the Polymarket CLI (Rust binary, v0.1.5+):

brew install polymarket/tap/polymarket-cli

For trading, set up a wallet:

polymarket wallet create
polymarket approve set

Or manually configure ~/.config/polymarket/config.json with your private key. See the CLI docs for details.

The CLI also provides an interactive REPL:

polymarket shell

Use --output json on any CLI command for machine-readable output suitable for scripting and piping.

Commands

Browse Markets (no CLI needed)

# Trending/active markets (sorted by 24h volume)
python3 {baseDir}/scripts/polymarket.py trending

# Trending with more results
python3 {baseDir}/scripts/polymarket.py trending --limit 20

# Search markets by keyword
python3 {baseDir}/scripts/polymarket.py search "trump"

# Get specific event by slug
python3 {baseDir}/scripts/polymarket.py event "fed-decision-in-october"

# Get markets by category
python3 {baseDir}/scripts/polymarket.py category politics
python3 {baseDir}/scripts/polymarket.py category crypto
python3 {baseDir}/scripts/polymarket.py category sports
python3 {baseDir}/scripts/polymarket.py category tech
python3 {baseDir}/scripts/polymarket.py category entertainment
python3 {baseDir}/scripts/polymarket.py category science
python3 {baseDir}/scripts/polymarket.py category business

Trending Markets Dashboard (no CLI needed)

Show a categorized dashboard of the hottest markets across Polymarket. Combine trending with category filters to build a full overview.

# Full trending dashboard - run these in sequence to build a picture:
python3 {baseDir}/scripts/polymarket.py trending --limit 10
python3 {baseDir}/scripts/polymarket.py category politics --limit 5
python3 {baseDir}/scripts/polymarket.py category crypto --limit 5
python3 {baseDir}/scripts/polymarket.py category sports --limit 5
python3 {baseDir}/scripts/polymarket.py category tech --limit 5

When the user asks for a "dashboard" or "overview," run all category queries and present the results grouped by section with clear headings. Include volume and current odds for each market.

Market Research Mode (no CLI needed)

Market research combines Polymarket odds with contextual analysis. When the user asks to "research" a market or wants deeper analysis beyond just odds:

1. Fetch the market data using search or event commands
2. Analyze the odds - what does the market imply? Is there an edge?
3. Provide context - use your knowledge to explain what drives the odds
4. Show historical movement - if CLI is available, pull price history
5. Compare to consensus - how do Polymarket odds compare to polls, expert opinion, or other prediction markets?

# Step 1: Find the market
python3 {baseDir}/scripts/polymarket.py search "fed rate cut"

# Step 2: Get detailed event data
python3 {baseDir}/scripts/polymarket.py event "fed-rate-decision-march-2026"

# Step 3: If CLI available, get price history to show trend
python3 {baseDir}/scripts/polymarket.py price-history TOKEN_ID --interval 1d

# Step 4: Check order book depth for liquidity assessment
python3 {baseDir}/scripts/polymarket.py book TOKEN_ID

After gathering data, synthesize the research into a structured report:

• Current Odds: Yes/No percentages and what they imply
• Volume & Liquidity: How much money is in this market, is it liquid enough to trade?
• Trend: Are odds moving up or down? Any recent spikes?
• Context: What real-world events or data points are driving the odds?
• Key Dates: When does the market resolve? Any upcoming catalysts?
• Risk Factors: What could cause a sudden move?

Market Comparison Mode (no CLI needed)

Compare related markets side-by-side. Useful for finding arbitrage, understanding conditional probabilities, or just seeing how different outcomes relate.

# Compare two or more related markets by searching for each
python3 {baseDir}/scripts/polymarket.py search "trump 2028"
python3 {baseDir}/scripts/polymarket.py search "desantis 2028"
python3 {baseDir}/scripts/polymarket.py search "newsom 2028"

When the user asks to "compare markets" or "side-by-side odds":

1. Search for each market the user mentions
2. Present odds in a comparison table format
3. Note volume differences (higher volume = more reliable odds)
4. Flag any apparent inconsistencies (e.g., probabilities that should sum to ~100% but don't)
5. Highlight the spread between related outcomes

Format the comparison as a table:

Market Comparison: 2028 Presidential Election

| Candidate     | Yes     | Volume  | Liquidity |
|---------------|---------|---------|-----------|
| Trump         | 32.5%   | $4.2M   | High      |
| DeSantis      | 18.1%   | $1.8M   | Medium    |
| Newsom        | 12.4%   | $890K   | Medium    |
| Harris        | 8.7%    | $2.1M   | Medium    |

Portfolio Dashboard (CLI + wallet required)

View your complete portfolio with positions, P&L, and open orders in one view.

# View all open positions
python3 {baseDir}/scripts/polymarket.py positions

# View positions for a specific wallet
python3 {baseDir}/scripts/polymarket.py positions --address 0xYOUR_WALLET

# Check USDC balance
python3 {baseDir}/scripts/polymarket.py wallet-balance

# Check balance for a specific token
python3 {baseDir}/scripts/polymarket.py wallet-balance --token TOKEN_ID

# List all open orders
python3 {baseDir}/scripts/polymarket.py orders

When the user asks for a "portfolio dashboard" or "how am I doing," run all three commands (positions, wallet-balance, orders) and present a unified view:

• Positions: Each position with current market price, your entry price (if available), and unrealized P&L
• USDC Balance: Available cash for new trades
• Open Orders: Pending limit orders with price and size
• Total Portfolio Value: Sum of positions + USDC balance

Order Book & Prices (CLI required, no wallet)

# Order book for a token
python3 {baseDir}/scripts/polymarket.py book TOKEN_ID

# Price history (intervals: 1m, 1h, 6h, 1d, 1w, max)
python3 {baseDir}/scripts/polymarket.py price-history TOKEN_ID --interval 1d

# Price history with specific number of data points
python3 {baseDir}/scripts/polymarket.py price-history TOKEN_ID --interval 1h --fidelity 48

Wallet (CLI required)

polymarket wallet create
polymarket wallet show
polymarket wallet balance
polymarket wallet balance --token TOKEN_ID

Trading (CLI + wallet required)

All trades require --confirm to execute. Without it, the order is previewed only. This is a safety feature - you always see what will happen before it happens.

Cost & Fee Transparency

Before executing any trade, the skill displays:

• Order type: Limit or Market
• Side: Buy or Sell
• Price: Your limit price (or "market" for market orders)
• Size: Number of shares
• Estimated cost: Price x Size for limit orders, or dollar amount for market orders
• Polymarket fee: Polymarket charges no trading fees on the CLOB (Central Limit Order Book)
• Gas fees: On-chain operations (approvals, splits, redeems) require MATIC for gas on Polygon. Typical gas: $0.01-0.05

# Preview a limit order (no --confirm = preview only)
python3 {baseDir}/scripts/polymarket.py trade buy --token TOKEN_ID --price 0.50 --size 10

# Execute a limit order
python3 {baseDir}/scripts/polymarket.py --confirm trade buy --token TOKEN_ID --price 0.50 --size 10

# Sell limit order
python3 {baseDir}/scripts/polymarket.py --confirm trade sell --token TOKEN_ID --price 0.70 --size 10

# Market order: buy $5 worth at current price
python3 {baseDir}/scripts/polymarket.py --confirm trade buy --token TOKEN_ID --market-order --amount 5

# Post-only limit order (rests on book only, never takes liquidity - Jan 2026+)
python3 {baseDir}/scripts/polymarket.py --confirm trade buy --token TOKEN_ID --price 0.45 --size 20 --post-only

Orders & Positions (CLI + wallet required)

# List open orders
python3 {baseDir}/scripts/polymarket.py orders

# Cancel a specific order
python3 {baseDir}/scripts/polymarket.py --confirm orders --cancel ORDER_ID

# Cancel all orders
python3 {baseDir}/scripts/polymarket.py --confirm orders --cancel all

# View positions
python3 {baseDir}/scripts/polymarket.py positions
python3 {baseDir}/scripts/polymarket.py positions --address 0xYOUR_WALLET

API Reference

Polymarket exposes 4 distinct APIs plus the Gamma convenience layer. Each serves a different purpose.

1. Gamma API (gamma-api.polymarket.com) - Public, no auth

The high-level convenience API for browsing and searching markets. Used by all read-only commands.

• Base URL: https://gamma-api.polymarket.com
• GET /events - List events (params: order, ascending, closed, limit, tag_slug)
• GET /search - Search markets (params: query, limit)
• GET /events/slug/{slug} - Event by slug
• GET /comments - List and filter comments on markets
• GET /profiles/{address} - Public user profiles
• GET /series - Grouped event collections (e.g., "2028 Election" series)
• GET /sports - Sports metadata including teams, matches, and resolution criteria
• GraphQL: POST /query - Full GraphQL endpoint with subscription support

2. CLOB API (clob.polymarket.com) - Trading

The Central Limit Order Book API for all trading operations. Wrapped by the Polymarket CLI.

• Base URL: https://clob.polymarket.com
• GET /prices-history - Historical prices (intervals: 1m, 1h, 6h, 1d, 1w, max)
• GET /spread - Bid-ask spread for a token
• GET /fee-rate - Fee structure details
• GET /rewards - Daily maker/taker earnings
• POST /order - Place an order
• POST /orders - Batch orders (up to 15 per request)
• DELETE /order/{id} - Cancel an order
• Order scoring - Check maker rebate eligibility before placing orders
• Post-Only orders (Jan 2026) - Orders that rest on the book only, never cross the spread
• Heartbeat API (Jan 2026):
  • POST /heartbeat - Must send within 10 seconds or all open orders auto-cancel
  • Used by market makers to maintain order presence
  • If heartbeat lapses, all resting orders for that API key are cancelled

3. Data API (data-api.polymarket.com) - Portfolio & Analytics

The dedicated API for portfolio tracking, trade history, and market analytics. No auth needed for public endpoints.

• Base URL: https://data-api.polymarket.com
• GET /positions?user={address} - Current open positions
  • Sort by: TOKENS, CURRENT, INITIAL, CASHPNL, PERCENTPNL
• GET /closed-positions?user={address} - Historical closed positions
• GET /activity?user={address} - Activity feed
  • Types: TRADE, SPLIT, MERGE, REDEEM, REWARD
• GET /value?user={address} - Portfolio valuation in USD
• GET /trades - Trade history
  • Filter by: user, market, side
  • Max 500 results per page
• GET /holders?market={conditionId} - Top token holders for a market
• GET /oi - Open interest across markets
• GET /volume - Trading volume across markets
• GET /leaderboard - Trader rankings (configurable time period)

Use the Data API for portfolio dashboards and analytics. It provides richer position data than the CLOB API, including P&L calculations and activity history.

4. RTDS WebSocket (wss://ws-live-data.polymarket.com) - Real-time Streaming

Real-time data streaming via WebSocket. Subscribe to topics for live updates without polling.

• URL: wss://ws-live-data.polymarket.com
• Protocol: JSON messages over WebSocket
• Topics:
  • comments - Real-time comment activity
    • Events: comment_created, comment_removed, reaction_created, reaction_removed
  • crypto_prices - Real-time cryptocurrency prices
    • Assets: BTC, ETH, SOL, XRP
    • Sources: Binance + Chainlink oracles
• Dynamic subscription management - Subscribe and unsubscribe to topics on the fly within a single connection
• Useful for building live dashboards, monitoring comment sentiment, or tracking crypto prices that feed into 5-minute crypto markets

5. Bridge API (bridge.polymarket.com) - Cross-chain Deposits & Withdrawals

Bridge funds into and out of Polymarket across multiple chains.

• Base URL: https://bridge.polymarket.com
• POST /deposit - Generate deposit addresses
  • Supported chains: EVM (Ethereum, Polygon, Arbitrum, etc.), Solana, Bitcoin
  • Returns a unique deposit address for the selected chain
• POST /withdraw (Jan 2026) - Bridge USDC.e to any supported chain
• GET /supported-assets - List all supported assets and chains
• GET /quote - Get cross-chain bridging quotes (fees, estimated time)

Use the Bridge API when a user needs to move funds in or out of Polymarket without leaving the terminal.

New Market Types

• 5-minute crypto markets (Feb 2026) - Ultra-short-duration markets on BTC/ETH/SOL price movements. Fed by RTDS crypto_prices data.
• Sports markets - Dedicated sports metadata via Gamma /sports endpoint with team info, match schedules, and resolution criteria.

Error Recovery

API Errors (Gamma API)

If the Gamma API returns an error or is unreachable:

• HTTP 429 (Rate Limited): Wait 5-10 seconds and retry. The Gamma API has generous rate limits but can throttle during high-traffic events.
• HTTP 500/502/503: The API is temporarily down. Inform the user and suggest trying again in a minute.
• Connection Error: Check internet connectivity. The API endpoint is https://gamma-api.polymarket.com.
• Empty Results: The search might be too specific. Suggest broader search terms or browse by category instead.

Data API Errors

• HTTP 400 (Bad Request): Check the user address format (must be a valid Ethereum address) or sort parameter spelling.
• Empty positions: The address may have no open positions, or the address format may be wrong. Try with and without checksum casing.
• Pagination: Trades endpoint maxes at 500 per page. Use cursor-based pagination for full history.

CLOB API Errors

• Heartbeat timeout: If using the Heartbeat API and the connection lapses for >10 seconds, all orders auto-cancel. Reconnect and re-place orders.
• Post-Only rejection: A post-only order that would cross the spread is rejected instead of filling. Adjust price to rest on the book.
• Batch limit: Maximum 15 orders per batch request. Split larger batches.

Bridge API Errors

• Unsupported chain: Check /supported-assets for current chain support.
• Quote expired: Bridge quotes have a TTL. Fetch a fresh quote before executing.
• Minimum amount: Some chains have minimum deposit/withdrawal amounts.

CLI Errors

If the Polymarket CLI returns an error:

• "CLI not installed": Install with brew install polymarket/tap/polymarket-cli.
• "Config not found": The user needs to run polymarket wallet create first.
• "Insufficient balance": Show current balance and the required amount.
• "Order rejected": The price may be outside valid range (0-1) or the market may be closed/resolved.
• "Approval needed": Some operations require a one-time on-chain approval. Run: polymarket approve set
• Timeout: CLI commands have a 30-second timeout. If a command times out, it may be a network issue or the Polygon RPC may be slow.

WebSocket Errors

• Connection dropped: RTDS WebSocket may drop on network changes. Reconnect and re-subscribe to topics.
• Invalid topic: Check available topics. Only comments and crypto_prices are currently supported.

Market Not Found

If a market slug or event is not found:

1. Search for the market by keyword instead of slug
2. Check if the market has resolved (use closed: true parameter)
3. Suggest similar markets based on the search terms
4. Link to polymarket.com for manual browsing

Authentication Issues

• No wallet configured: Guide the user through polymarket wallet create
• Wrong network: Polymarket uses Polygon. Ensure the wallet is on the correct network.
• Insufficient MATIC: On-chain operations need MATIC for gas. Direct user to bridge or purchase MATIC.

Usage Examples

Example 1: Quick odds check

User: "What are the odds Trump wins 2028?"

python3 {baseDir}/scripts/polymarket.py search "trump 2028 president"

Output:

Search: 'trump 2028 president'

  Trump wins 2028 Presidential Election
   Yes: 31.2% | No: 68.8%
   Volume: $4.2M
   Ends: Nov 05, 2028
   polymarket.com/event/trump-wins-2028-presidential-election

Example 2: Trending dashboard

User: "What's hot on Polymarket right now?"

Run trending and present top markets grouped by volume:

Trending on Polymarket

  Fed Rate Decision - March 2026
   Markets: 3
   - Rate cut: 72.3%
   - No change: 25.1%
   - Rate hike: 2.6%
   Total Volume: $8.1M

  Bitcoin above $150K by July 2026
   Yes: 28.4% | No: 71.6%
   Volume: $3.9M

  UFC 310 Main Event Winner
   Fighter A: 62.1% | Fighter B: 37.9%
   Volume: $1.2M

Example 3: Market research

User: "Research the Fed rate decision market for me"

The skill fetches market data, then provides analysis:

Market Research: Fed Rate Decision - March 2026

Current Odds:
  Rate cut:    72.3% (down from 81% last week)
  No change:   25.1% (up from 17% last week)
  Rate hike:    2.6% (stable)

Volume & Liquidity:
  Total Volume: $8.1M
  24h Volume:   $420K
  Order book depth: Deep (>$50K on both sides)

Trend: Odds of a cut have fallen ~9 points in the past week,
likely driven by stronger-than-expected jobs report on Friday.

Key Dates:
  - FOMC Meeting: March 18-19, 2026
  - Market resolves: March 19, 2026

Context: The market is pricing in a ~72% chance of a 25bp cut.
This aligns roughly with CME FedWatch tool (68%) and economist
consensus (65-75% for a cut). The slight premium on Polymarket
may reflect retail sentiment skewing more dovish.

Example 4: Portfolio via Data API

User: "How's my Polymarket portfolio doing?"

Use the Data API for rich portfolio data:

# Portfolio value
curl -s "https://data-api.polymarket.com/value?user=0xYOUR_WALLET"

# Open positions sorted by P&L
curl -s "https://data-api.polymarket.com/positions?user=0xYOUR_WALLET&sortBy=CASHPNL"

# Recent activity
curl -s "https://data-api.polymarket.com/activity?user=0xYOUR_WALLET"

Output:

Portfolio Dashboard

Portfolio Value: $289.80

Positions (sorted by P&L):
  Fed Rate Cut (Yes)     100 shares @ $0.65    Current: $0.72    P&L: +$7.00
  BTC > $150K July (No)   50 shares @ $0.60    Current: $0.71    P&L: +$5.50

Recent Activity:
  TRADE  Bought 25 Fed Rate Cut (Yes) @ $0.68    2 hours ago
  REDEEM Claimed $12.40 from resolved market     1 day ago

USDC Balance: $142.30
Open Orders: 1 pending

Example 5: Side-by-side comparison

User: "Compare the Republican primary candidates"

Market Comparison: 2028 Republican Primary

| Candidate     | Win Primary | Win General | Volume (Primary) |
|---------------|-------------|-------------|------------------|
| Trump         | 42.1%       | 31.2%       | $2.8M            |
| DeSantis      | 22.5%       | 18.1%       | $1.4M            |
| Haley         | 11.3%       |  8.9%       | $680K            |
| Ramaswamy     |  6.8%       |  4.2%       | $320K            |

Note: Primary odds sum to ~95% (gap = long-tail candidates).
Win-general odds are conditional on winning the primary.

Example 6: Trade with cost preview

User: "Buy 50 shares of Yes on the Fed rate cut at 68 cents"

python3 {baseDir}/scripts/polymarket.py trade buy --token TOKEN_ID --price 0.68 --size 50

Output:

Buy Limit Order (PREVIEW)
   Token: Fed Rate Decision - Rate Cut (Yes)
   Side:  BUY
   Price: $0.68
   Size:  50 shares
   Estimated Cost: $34.00
   Trading Fee: $0.00 (Polymarket CLOB has no trading fees)
   Gas Fee: ~$0.01-0.05 MATIC (only on first approval)

   Add --confirm to execute this trade.
   This involves REAL MONEY on Polygon.

Example 7: Leaderboard and top holders

User: "Who are the top Polymarket traders?"

# Trader leaderboard
curl -s "https://data-api.polymarket.com/leaderboard"

# Top holders for a specific market
curl -s "https://data-api.polymarket.com/holders?market=CONDITION_ID"

Example 8: Bridge funds in

User: "I want to deposit funds to Polymarket from Ethereum"

# Check supported assets
curl -s "https://bridge.polymarket.com/supported-assets"

# Get a quote
curl -s -X POST "https://bridge.polymarket.com/deposit" \
  -H "Content-Type: application/json" \
  -d '{"chain": "ethereum", "asset": "USDC"}'

Example 9: Historical price analysis

User: "Show me the price history for this market over the past week"

# Via CLOB API
curl -s "https://clob.polymarket.com/prices-history?tokenID=TOKEN_ID&interval=1d&fidelity=7"

# Or via CLI
polymarket price-history TOKEN_ID --interval 1d --output json

Example 10: Spread and fee check

User: "What's the spread on this market?"

# Bid-ask spread
curl -s "https://clob.polymarket.com/spread?tokenID=TOKEN_ID"

# Fee rate
curl -s "https://clob.polymarket.com/fee-rate"

Safety Notes

• Real money. Trades execute on Polygon with real USDC. Double-check everything.
• All trades require --confirm. Without it, you get a preview only. This is non-negotiable.
• The CLI is experimental. The Polymarket team warns: "Use at your own risk and do not use with large amounts of funds."
• Private key security. Your key is stored in ~/.config/polymarket/config.json. Never share it, never commit it.
• Gas fees. On-chain operations (approvals, splits, redeems) require MATIC for gas on Polygon.
• Heartbeat API. If you use the heartbeat system for market making, a missed heartbeat (>10s) cancels all your resting orders.
• Market resolution. Markets resolve based on the resolution source specified in each market. Check the resolution criteria before trading.
• Slippage. Market orders execute at the best available price, which may differ from the displayed price in fast-moving markets.
• Liquidity. Low-volume markets may have wide bid-ask spreads. Check the order book before placing large orders.
• Bridge funds. Cross-chain bridging involves smart contract risk. Verify addresses and amounts before confirming.

Related Skills

Looking for more market intelligence? Try these OpenClaw skills:

• /search-x - Search X/Twitter for real-time sentiment on any topic. Pair with Polymarket odds to gauge whether the market is ahead of or behind public opinion.
• /last30days - Deep research on any topic using web + social sources. Use it to build context before placing a trade.
• /parallel - Run multiple research tasks simultaneously. Combine Polymarket odds with news, social sentiment, and expert analysis in one shot.