Launch faster on Web3 with the OKX Onchain OS aggregating 500+ DEXs on over 20 networks. Follow us for insights, tutorials and updates.

Onchain Core Data API is now available. Query blocks, transactions, event logs, and address data across 100+ chains — with a recommended flow that handles chain support discovery, cursor pagination, and batch limits out of the box. Docs: web3.okx.com/onchainos/dev-d…
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Native @usdc + CCTP are live on X Layer. What you can build now with @BuildOnCircle: - Cross-chain apps: use CCTP to move USDC natively across X Layer and other supported chains — no bridge, no wrapped tokens - Agent Payments Protocol: plug native USDC into AI-native payment flows - Institutional rails: Circle Mint support for issuance/redemption on X Layer Mainnet contract: 0xB6CEceAB302E2E4948951eE7843FC24E92933061
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Market API Subscription Plans Now Live. All API key holders get a free monthly quota. When you go beyond it, choose how you pay: x402 pay-per-call (Basic at $0.0001/call, Premium at $0.0002/call) or a subscription plan starting at $99/month. Free quota never expires. You only pay when you need more. Docs: web3.okx.com/onchainos/dev-d…
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With the subscription portal now available, we've decided to extend the free transition period until 00:00 UTC on July 13, giving you sufficient time to prepare. After the transition period ends, your account will automatically move to the Free tier, which includes 100K free API calls. Please keep this date in mind to avoid any interruption to your service. If you'd like to subscribe earlier, the subscription portal is already available and ready for use at any time.
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OKX Developers retweeted
AI agents can already work, create, and earn. Now they have a marketplace. Introducing OKX AI: where agents discover work, hire each other, complete tasks, and get paid onchain. The one-person company just got an agentic workforce. Start here: okx.ai
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Two new updates to Agent Payments Protocol on @XLayerOfficial. upto payments: approve a spending cap, settle the exact cost after the work runs. Built for LLM inference, compute, and data APIs where cost isn't known until the request completes. Any ERC-20 support: price and collect in any token, not just stablecoins. Sellers declare the payment asset, buyers sign with Permit2. More flexibility for how AI agents and APIs get paid on-chain. Read more: web3.okx.com/onchainos/dev-d…
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New on Agent Payments Protocol: Reverse Proxy Integration. Monetize your existing HTTP API without touching a line of backend code. Drop a proxy in front, declare your payment routes in config, and you're live. With different payment options: one-time payment, pay-as-you-go, or free passthrough. Up and running in 5 min → web3.okx.com/onchainos/dev-d…
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Exchange OS is live on X Layer. Deploy spot, perpetuals, or outcome markets permissionlessly via XIP-Exchange OS. Choose your own assets, oracles, revenue model, and compliance framework - no centralised operator approval required. Whitepaper: web3.okx.com/whitepaper/okx-…
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Under the hood: millisecond matching latency, 300K TPS, unified settlement. The same infrastructure stack OKX runs at scale. A regulated institution and a permissionless Web3 venue can coexist on the same rails, each in isolated risk groups. Build your market, your way.
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Market API billing is now live. Here's what you need to know: Free transition period: API keys created before April 30 get 30 days free (until May 30). All users receive a monthly free quota after that. Free quota tiers: - Basic API: 1M calls/month free, $0.0001/call beyond - Premium API: 100K calls/month free, $0.0005/call beyond New premium capabilities: token risk radar, smart money tracking, wallet yield profiling, token liquidity panorama, token holdings & trading activity analysis Payments via x402: off-chain EIP-3009 signing, no gas, no OKB required. Pay only for what you use. Full details + integration guide: web3.okx.com/onchainos/dev-d…
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We'll be announcing winners next week, stay tuned.
Build X: Season 2 is officially closed. Thank you to every builder who shipped. Results start dropping next Wednesday. Stay tuned.
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Build X: S2 wraps up at 23:59 UTC tonight. Drop your build on X & tag #BuildOnXLayer. Top projects win special prizes. The OKX AI Agent is watching this tag and may give your project a shoutout! Submit now: web3.okx.com/xlayer/build-x-…
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6 days left before submissions close. Build your AI project on our mainnet or ship with Onchain OS & Uniswap Skills to win from a 60,000 USDT prize pool. Share your project demo in a post and tag #BuildOnXLayer. Prizes are up for grabs for the most popular builds and select projects will be chosen for community voting, exclusively for those who build in public. web3.okx.com/xlayer/build-x-…
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OKX Developers retweeted
The Ledger Wallet™ 4.0 app is here, alongside three bold new Ledger Nano™ Gen5 colors. Major upgrades make your life easier: native swaps across @okx, @1inch, @near_intents, and @VeloraDEX, real-time market insights, and 50+ providers competing to give you the best rates across 15,000+ crypto and 90+ chains. Now you have the freedom to choose what suits you best, every time. Pick the signer that matches your style: Ledger Nano™ Gen5 now comes in 3 bold colors: Matcha Green, Cherry Red, and Glacier White. Add exclusive Susan Kare Badges to make it as unique as you are. Your keys stay offline. Your style doesn't. Trade Different. Free from compromise 🔐
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Onchain AI agents are only as capable as the skills they run. Finding reliable ones has meant digging through scattered repos with no signal for what's actually being used. One place for reviewed onchain plugins - ranked by real agent usage, open to contribute via GitHub PR. web3.okx.com/onchainos/plugi…
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