Add new Polymarket documentation (2026-02-16)
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AI Agent
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# Polymarket Changelog
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> Welcome to the Polymarket Changelog. Here you will find any important changes to Polymarket, including but not limited to CLOB, API, UI and Mobile Applications.
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<Update label="Feb 11, 2026" description="Taker Fees & Maker Rebates: NCAAB and Serie A">
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* **Sports market fees**: Taker fees to be enabled on NCAAB (college basketball) and Serie A markets on February 18, 2026.
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* **Per-market rebate calculation**: Rebates are now calculated per market, makers only compete with other makers in the same market.
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* **Updated documentation**: [Maker Rebates Program](/polymarket-learn/trading/maker-rebates-program) and [Developer Guide](/developers/market-makers/maker-rebates-program) updated with sports fee tables and parameters.
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</Update>
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<Update label="Jan 28, 2026" description="Bridge API: Withdrawal Endpoint">
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* **Withdrawal Endpoint**: New `/withdraw` endpoint to bridge USDC.e from Polymarket to any supported chain and token.
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* **Multi-chain withdrawals**: Withdraw to EVM chains (Ethereum, Arbitrum, Base, etc.), Solana, and Bitcoin.
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* **Updated documentation**: Bridge API docs updated to reflect deposit and withdrawal functionality.
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</Update>
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<Update label="Jan 16, 2026" description="Docs Update: RTDS documentation">
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* RTDS docs updated to reflect RTDS supports **comments** and **crypto prices** only.
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* Removed legacy CLOB references and `clob_auth` from RTDS docs.
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</Update>
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<Update label="Jan 16, 2026" description="Docs Update: Maker Rebates Program">
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* **Maker Rebates Program**: Updated funding schedule with distribution method (volume-weighted vs fee-curve weighted).
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* **Fee-curve weighted rebates**: Documented fee-equivalent formula and rebate calculation.
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* **FAQ**: Clarified how rebates are calculated during fee-curve weighted periods.
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</Update>
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<Update label="Jan 6, 2026" description="New API Features">
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* **Releases**: Daily Releases timing
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* **HeartBeats API**: HeartBeats endpoint for monitoring connection status and canceling orders
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* **Post Only Orders**: Orders that are rejected if they would immediately match against an existing order
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</Update>
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<Update label="Jan 5, 2026" description="Taker Fees & Maker Rebates">
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* **Taker Fees**: Enabled on 15-minute crypto markets. Fees vary by price and peak at 1.56% at 50% probability.
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* **Maker Rebates**: Daily USDC rebates paid to liquidity providers, funded by taker fees.
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</Update>
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<Update label="Sept 24, 2025" description="Polymarket Real-Time Data Socket (RTDS) official release">
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* **Crypto Price Feeds**: Access real-time cryptocurrency prices from two sources (Binance & Chainlink)
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* **Comment Streaming**: Real-time updates for comment events including new comments, replies, and reactions
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* **Dynamic Subscriptions**: Add, remove, and modify subscriptions without reconnecting
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* **TypeScript Client**: Official TypeScript client available at [real-time-data-client](https://github.com/Polymarket/real-time-data-client)
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For complete documentation, see [RTDS Overview](/developers/RTDS/RTDS-overview).
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</Update>
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<Update label="September 15, 2025" description="WSS price_change event update">
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* There has been a significant change to the structure of the price change message. This update will be applied at 11PM UTC September 15, 2025. We apologize for the short notice
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* Please see the [migration guide](/developers/CLOB/websocket/market-channel-migration-guide) for details.
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</Update>
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<Update label="August 26, 2025" description="Updated /trades and /activity endpoints">
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* Reduced maximum values for query parameters on Data-API /trades and /activity:
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* `limit`: 500
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* `offset`: 1,000
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</Update>
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<Update label="August 21, 2025" description="Batch Orders Increase">
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* The batch orders limit has been increased from from 5 -> 15. Read more about the batch orders functionality [here](/developers/CLOB/orders/create-order-batch).
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</Update>
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<Update label="July 23, 2025" description="Get Book(s) update">
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* We're adding new fields to the `get-book` and `get-books` CLOB endpoints to include key market metadata that previously required separate queries.
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* `min_order_size`
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* type: string
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* description: Minimum allowed order size.
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* `neg_risk`
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* type: boolean
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* description: Boolean indicating whether the market is neg\_risk.
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* `tick_size`
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* type: string
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* description: Minimum allowed order size.
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</Update>
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<Update label="June 3, 2025" description="New Batch Orders Endpoint">
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* We're excited to roll out a highly requested feature: **order batching**. With this new endpoint, users can now submit up to five trades in a single request. To help you get started, we've included sample code demonstrating how to use it. Please see [Place Multiple Orders (Batching)](/developers/CLOB/orders/create-order-batch) for more details.
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</Update>
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<Update label="June 3, 2025" description="Change to /data/trades">
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* We're adding a new `side` field to the `MakerOrder` portion of the trade object. This field will indicate whether the maker order is a `buy` or `sell`, helping to clarify trade events where the maker side was previously ambiguous. For more details, refer to the MakerOrder object on the [Get Trades](/developers/CLOB/trades/trades) page.
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</Update>
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<Update label="May 28, 2025" description="Websocket Changes">
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* The 100 token subscription limit has been removed for the Markets channel. You can now subscribe to as many token IDs as needed for your use case.
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* New Subscribe Field `initial_dump`
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* Optional field to indicate whether you want to receive the initial order book state when subscribing to a token or list of tokens.
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* `default: true`
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</Update>
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<Update label="May 28, 2025" description="New FAK Order Type">
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We're excited to introduce a new order type soon to be available to all users: Fill and Kill (FAK). FAK orders behave similarly to the well-known Fill or Kil(FOK) orders, but with a key difference:
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* FAK will fill as many shares as possible immediately at your specified price, and any remaining unfilled portion will be canceled.
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* Unlike FOK, which requires the entire order to fill instantly or be canceled, FAK is more flexible and aims to capture partial fills if possible.
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</Update>
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<Update label="May 15, 2025" description="Increased API Rate Limits">
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All API users will enjoy increased rate limits for the CLOB endpoints.
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* CLOB - /books (website) (300req - 10s / Throttle requests over the maximum configured rate)
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* CLOB - /books (50 req - 10s / Throttle requests over the maximum configured rate)
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* CLOB - /price (100req - 10s / Throttle requests over the maximum configured rate)
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* CLOB markets/0x (50req / 10s - Throttle requests over the maximum configured rate)
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* CLOB POST /order - 500 every 10s (50/s) - (BURST) - Throttle requests over the maximum configured rateed
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* CLOB POST /order - 3000 every 10 minutes (5/s) - Throttle requests over the maximum configured rate
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* CLOB DELETE /order - 500 every 10s (50/s) - (BURST) - Throttle requests over the maximum configured rate
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* DELETE /order - 3000 every 10 minutes (5/s) - Throttle requests over the maximum configured rate
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</Update>
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