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Emil Nielsen
Emil Nielsen

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Three Major Updates from Polymarket: Rebates, Parlay Trading, and a New Developer SDK

Polymarket has recently introduced a series of updates that could significantly impact traders, developers, and anyone tracking the ecosystem for potential incentive programs or future token distribution.

This breakdown covers three key announcements: a new taker fee rebate system, upcoming combinatorial (parlay-style) markets, and a major overhaul of Polymarket’s developer SDKs.


1. Taker Fee Rebate Program (Up to 50%)

Polymarket is rolling out a tier-based rebate system for taker trades, where users can earn up to 50% fee rebates depending on their 30-day weighted trading volume.

Tier Structure (simplified)

  • Bronze → minimal volume thresholds
  • Silver / Gold → mid-tier volume rewards
  • Platinum / Diamond / Obsidian → highest tiers

At the top end:

  • $10M+ 30-day volume → up to 50% fee rebate

Key Mechanics

Rebates are based on weighted volume, not raw volume:

Trade size × (1 − entry price) × category weight × bonuses

Example intuition

  • Trades further out-of-the-money (e.g. 5% probability events) generate higher weighted volume
  • Category multipliers apply:

    • Sports: 1.0
    • Politics: 1.3
    • Crypto: 2.3
    • Geopolitics: free / special handling

This design strongly incentivizes:

  • Taking directional risk further from midpoint pricing
  • Trading higher-weighted categories like crypto and politics

Why this matters

There is growing speculation that:

  • These tiers may later connect to a future POLY token airdrop
  • “Future rewards” language suggests retroactive incentive design

While unconfirmed, similar systems in crypto have historically preceded token distributions.


2. Combinatorial Markets (Parlay-Style Contracts)

Another major rumored feature is the introduction of combinatorial outcome contracts, similar to sports parlays.

How it would work

  • Combine multiple outcomes into one position
  • All legs must be correct for payout
  • Missing one = position goes to zero
  • Odds multiply across legs

Example

  • Team A wins + Player scores + Over X points → one combined bet

Why it matters

This introduces:

  • Higher leverage-style payoff structures
  • Increased engagement for sports markets
  • Potential massive liquidity expansion during events like the World Cup

There are indications that:

  • A World Cup-focused feature release is planned
  • Early internal references suggest strong emphasis on sports expansion

If rolled out broadly, this could be one of the biggest structural upgrades to prediction markets in years.


3. New SDK: Unified Python + TypeScript Infrastructure

Polymarket is also releasing a new unified developer SDK (Python + TypeScript), replacing older fragmented tooling.

Key improvements

  • Single client architecture
  • Strongly typed market primitives:

    • Market
    • MarketState
    • Outcome
    • Resolution
  • Built-in pagination for gamma markets

  • Cleaner error handling

  • Market discovery tools:

    • Events
    • Tags
    • Sports categories
    • Search
  • Real-time data streams (prices + events)

Why developers care

Previously, working with Polymarket APIs required:

  • Reverse engineering payloads
  • Handling inconsistent responses
  • Multiple SDK fragments

Now:

  • Cleaner abstraction layer
  • Easier bot development
  • More reliable data pipelines

This is especially relevant for:

  • Arbitrage bots
  • Market-making strategies
  • Automated trading systems

Useful Resources

Trading Bot (GitHub)

A practical example of automation and trading infrastructure:
[Polymarket Trading Bot (BTC/ETH/M Bot)]

GitHub logo DextersSlab / Polymarket-Arbitrage-Trading-Bot

Polymarket Arbitrage Bot | Polymarket Trading Bot | Polymarket Arbitrage Bot | Polymarket Trading Bot | Polymarket Arbitrage Bot | Polymarket Trading Bot | Polymarket Arbitrage Bot | Polymarket Trading Bot | Polymarket Arbitrage Bot | Polymarket Trading Bot | Polymarket Arbitrage Bot | Polymarket Trading Bot | Polymarket Arbitrage Bot | Polymarket

Polymarket Arbitrage Trading Bot (BTC, ETH Momentum Arbitrage trading bot)

TypeScript bot for Polymarket CLOB V2 5-minute BTC and ETH Up/Down markets. It monitors Chainlink strike/spot vs order books, enters momentum-aligned positions late in each epoch, optionally completes the opposite leg for a boxed pair, and manages exits with configurable risk rules.

You can check this bot pnl with this account.

https://polymarket.com/@9g9g99

My_account_Pnl
BTC-ETH-Momentum-Arbitrage-Bot-9g9g99.mp4

Built with @polymarket/clob-client-v2 and Node.js 20+. See V2_MIGRATION.md for Polymarket exchange upgrade notes.

Features

  • Dual-market confirmation — BTC and ETH must align before entries (reduces false signals)
  • Chainlink Data Streams — strike at epoch open + live spot for spot_minus_strike
  • High-frequency monitor — REST CLOB /book polling (~150ms), merged btc/eth wave logs
  • Six strategy phases — buy1, buy2, buy3, buy4, risk1, risk2, risk3
  • Paper trading — simulated fills without live CLOB orders
  • Optional redeem — gasless redeem via Polymarket builder relayer after epoch end
  • Deposit wallet

Full Video Breakdown

Watch on YouTube


YouTube Channel

Channel Page


Final Thoughts

These updates point to three major strategic directions for Polymarket:

  1. Stronger trading incentives (rebates + tier system)
  2. Expansion into more complex derivatives (parlays / combinatorial markets)
  3. Serious infrastructure scaling for developers and bots (new SDK)

If these features roll out as described, they could significantly increase trading volume and reshape how users interact with prediction markets—especially around high-profile events like the World Cup.

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