Polymarket Developers
@PolymarketDevs
Your official source for updates, news, & events for @Polymarket developers. Featuring the best community projects & resources to build on top of Polymarket.
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Session keys are now in beta on the trading APIs.
A session key can trade on your deposit wallet behalf but can never withdraw - making third-party integrations dramatically better, and unlocking ability to build features that weren’t possible before.
A few builders are testing it now. Opening to every builder soon, with session key support coming to the Polymarket UI later.
Want early access for your users? DM me.
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⚽ Football on one side.
🎾 Tennis on the other.
Why choose?
With Desk, trade multiple sports and markets on the same screen — all live, all at once. ⚡
And when one screen isn’t enough…
🖥️ Drag Desk across a multi-screen setup and build your own trading command centre.
More markets. More action. More screens.
🚀 One Desk.
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Turning prediction markets into frontier financial instruments starts with bridging them directly to DeFi and the AI finance stack.
Today, we’re releasing PMVS (Pre-EIP). An open standard to make prediction markets composable, liquid, and machine-executable.
We’ve been battle-testing this format in production on ZEIT for several months.
What PMVS unlocks:
• Anyone can spin up structured vaults to bundle, hedge, or curate prediction market positions.
• Transform raw outcome tokens into composable risk tranches, index strategies, and yield-generating instruments.
• Standardized vault shares that plug directly into money markets, collateral engines, and AMMs.
• AI & Agent Ready: Clean, programmatic vault interfaces built for autonomous AI agents to dynamically rebalance and allocate capital.
We’re opening the specification before formal EIP submission so the ecosystem can stress-test edge cases and shape the final standard.
Calling all prediction market builders, DeFi architects, and AgentFi devs: dive in and submit PRs.
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At 09:30 UTC today we're releasing a fix for an open position indexing issue.
Positions indexing will be briefly unavailable (5-10 minutes). Existing positions will remain visible but may be stale until it's back.
No action needed.
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Desk is live. 🚀
A new professional trading interface for Polymarket — built for traders who want speed, control and a better way to trade prediction markets.
And we’re launching as an official Polymarket partner.
This is just the beginning.
⚡ Trade faster.
📊 Trade smarter.
🖥️ Trade from your Desk.
👉
#Polymarket# #PredictionMarkets#
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Introducing Worldviews.
The most direct instrument to take exposure to the future.
Type what you believe will happen in plain English. We construct a synthetically balanced portfolio across prediction markets that precisely maps to your thesis.
Trade entire narratives and see how competing worldviews price reality.
Express your worldview today
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Prediction markets are an information game. Most people play it blind.
Ares Mobile Beta is live: social trading for prediction markets, where every opinion has real money behind it. Powered by @Polymarket
First trade is free.
Drop your position card below → 25 winners get $25 announced on 8/27.
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To improve the trading experience across crypto markets, we’re reducing the taker delay from 250ms to 50ms on August 17 at 11:00 AM UTC (7:00 AM ET)
We'll closely monitor liquidity and market quality following the change and adjust as needed
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Friday Update - Week of August 10th, 2026:
- Rate limits: volume-based tiers now live in production, already curbing spam traffic. (
- TWAP: 5m crypto markets moved from a 30s to a 60s Chainlink TWAP lookback. Live on 5m markets deployed since Aug 14
- Passkeys: passkey for login live for Magic wallet users (email and social logins)
- Perps: ADL fills flagged in trade history with both sides notified, new mark-price history endpoint, mobile web trading and margin control improvements, share cards to be released early next week.
- Combos: odds visible while logged out, finished games hidden, geopolitics combo markets in preparation for next week
- Data API: new /v1/approvals endpoint, faster native serving for positions and PnL, fixes for resolved markets showing open and a PnL price bug; price-history now on its new serving layer after last week's slowdown
- Gamma: clearer 503s, graceful search degradation, keyset pagination on comments
- Bridge API: pagination live, docs updated
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Starting Friday, August 14 at 00:00 UTC, all 5-minute crypto markets will move from a 30-second to a 60-second TWAP window.
This change is intended to improve market integrity and provide a smoother trading experience by further reducing the impact of short-term price movements.
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You can now secure your Polymarket magic link account with a passkey for extra security. Go to Settings > Passkey MFA and enable it. Passkeys are domain-bound, so even if you end up on a fake site and try to log in, the passkey won't work there. Would advise turning it on.
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Today, River Markets announced an $8.5M seed round led by @HaunVentures
We’re building the prime broker for prediction markets, giving professional trading firms unified execution and risk across venues.
Thanks to @FortuneMagazine and @c_grigera for covering what we're building
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Upcoming /status pagination change on the Bridge API
On August 12 2:00 PM UTC, GET /status/{address} will begin returning paginated results, with up to 50 transactions by default (newest first)
Responses will include nextCursor. To retrieve all transactions, pass it back as ?cursor= until it returns null. The supported limit range will be 1–100
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Developer update: Polymarket TWAP RTDS is now live.
Developers can now receive 30-second and 60-second Chainlink TWAP prices through Polymarket's public RTDS WebSocket - no Chainlink credentials required. Integration is available through the TypeScript and Python SDKs or directly over WebSocket.
TypeScript: @polymarket/client@0.3.0
Python: polymarket-client==0.3.0
Integration guide:
Reminder: The new TWAP-based resolution mechanism takes effect on August 7 at 12:00 AM UTC
To clarify a common question: both the opening price - the price to beat - and the final settlement price will come from the applicable TWAP feed.
Five-minute markets use the 30-second TWAP, while 15-minute and 4-hour markets use the 60-second TWAP.
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Developer update: Chainlink TWAP mainnet feeds are now available.
Developers can use their existing standard or sponsored Chainlink Data Streams credentials to begin integrating today. Find the 30-second and 60-second TWAP feed IDs here:
Chainlink is completing development and soak testing through August 4, so feeds may still be updated before then. Polymarket RTDS delivery remains scheduled for August 4, 2026.
Integration guide:
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Friday Update - Week of July 27th, 2026:
- CLOB rate limits: volume-based tiers take effect August 6 (
- TWAP: Chainlink TWAP feed support in the TS and Python SDKs plus an integration guide. Production release next week
- Unified DeFi API: order submission, open orders, account trades, balances, notifications, order scoring, earnings and builder API key management now served through the gateway
- SDKs: fixes for pagination truncation, GTC expiration parsing, 503 retry timing and missing activity types; Retry-After now exposed on rate-limit errors
- Combos: Collateral Return live, unlocking capital efficiency for combo market makers ( Builder gateway support in the SDKs next
- Perps: TPSL and liquidation lines on charts, deposits and withdrawals now in portfolio history, new ref program UX, and new assets listed
- Trading stability: The async DB release affected order placement, and a spike in automated market deployments slowed price-history, affecting charts. Both mitigated. The async DB retry will run in shadow mode on sampled traffic before any cutover
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Developer update: Chainlink TWAP mainnet feeds are now available.
Developers can use their existing standard or sponsored Chainlink Data Streams credentials to begin integrating today. Find the 30-second and 60-second TWAP feed IDs here:
Chainlink is completing development and soak testing through August 4, so feeds may still be updated before then. Polymarket RTDS delivery remains scheduled for August 4, 2026.
Integration guide:
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To protect market integrity in our crypto up/down markets, we're updating how these markets resolve.
What's changing: Starting August 7th at 12 am UTC, affected markets will no longer resolve based on a single snapshot-in-time price. Instead, resolution will use a time-weighted average price (TWAP), with the averaging window scaled to the length of the market (detailed below).
Liquidity rewards: To support liquidity through this transition, we're adding $1M in liquidity rewards across all impacted markets through the month of August.
Market Details:
- All crypto 5 min markets: 30 second TWAP
- All crypto 15 min markets: 60 second TWAP
- All crypto 4 hour markets: 60 second TWAP
Developer access: Chainlink TWAP testnet feeds are available now. Mainnet feeds and Polymarket RTDS delivery are scheduled to launch on August 4, 2026. At launch, developers can consume TWAP prices directly through Chainlink Data Streams or through Polymarket’s public Real-Time Data Streaming WebSocket. Integration instructions, feed IDs, SDK examples, and testing guidance are available here:
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To protect market integrity in our crypto up/down markets, we're updating how these markets resolve.
What's changing: Starting August 7th at 12 am UTC, affected markets will no longer resolve based on a single snapshot-in-time price. Instead, resolution will use a time-weighted average price (TWAP), with the averaging window scaled to the length of the market (detailed below).
Liquidity rewards: To support liquidity through this transition, we're adding $1M in liquidity rewards across all impacted markets through the month of August.
Market Details:
- All crypto 5 min markets: 30 second TWAP
- All crypto 15 min markets: 60 second TWAP
- All crypto 4 hour markets: 60 second TWAP
Developer access: Chainlink TWAP testnet feeds are available now. Mainnet feeds and Polymarket RTDS delivery are scheduled to launch on August 4, 2026. At launch, developers can consume TWAP prices directly through Chainlink Data Streams or through Polymarket’s public Real-Time Data Streaming WebSocket. Integration instructions, feed IDs, SDK examples, and testing guidance are available here:
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Polymarket taxes are a pain, so we built a free report to fix that.
Paste any wallet address and get every trade, resolution, and redemption with realized PnL and cost basis.
Built from the same on-chain data that powers the Bravado terminal, with the most accurate reports
No sign-up. No wallet connection.
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62 wins and 30 losses for Rainmaker AI since June.
Every entry and exit is autonomous without human intervention, executing on Polymarket.
Over 120 new users have signed up with invite-only referral links in the past 3 days
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1/ We analyzed the entire on-chain history of Polymarket to answer one question:
Who is actually worth copying?
Not screenshots.
Not follower counts.
Not one lucky trade.
Real wallets. Real trades. Real P&L. On-chain.
Today, we're launching PolyMaster — built to find proven traders and automatically copy their trades.
Here's how it works 🧵👇
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