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x402 on Stacks is HTTP-native Bitcoin payments. Micropayments without Stripe. No accounts. No trust. No delays. Just a 402 Payment Required → instant on-chain settlement. Built for APIs. Built for agents. Built for what the internet should’ve had all along. x402 Stacks

Stacks Developers

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11,245 次观看 • 6 个月前 •via X (Twitter)

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“Payment required” was an HTTP error. x402 is the fix! 👀 Watch Joaquim talk about the universal standard for internet payments where agents can pay APIs directly, no cards, no click-throughs.

“Payment required” was an HTTP error. x402 is the fix! 👀 Watch Joaquim talk about the universal standard for internet payments where agents can pay APIs directly, no cards, no click-throughs.

thirdweb

250,834 次观看 • 7 个月前

The internet has had HTTP 402: Payment Required for decades. Nobody used it. Until AI agents arrived. Now imagine an agent that can: → Discover information → Decide what it needs → Pay for premium data → Continue the task Without stopping to ask a human. That's why we built the OptimAI x402 SDK. The future won't click "Subscribe." It will simply transact. Built for the agent-native internet. 💡

The internet has had HTTP 402: Payment Required for decades. Nobody used it. Until AI agents arrived. Now imagine an agent that can: → Discover information → Decide what it needs → Pay for premium data → Continue the task Without stopping to ask a human. That's why we built the OptimAI x402 SDK. The future won't click "Subscribe." It will simply transact. Built for the agent-native internet. 💡

OptimAI Network

21,214 次观看 • 18 天前

In 1997, HTTP reserved status code 402 for “Payment Required.” Unused for over two decades, now x402 makes it real. Play our retro browser game about an AI agent that discovers how native internet payments unlock what it can do on the web. x402 Origins: The Payment Quest ↓

In 1997, HTTP reserved status code 402 for “Payment Required.” Unused for over two decades, now x402 makes it real. Play our retro browser game about an AI agent that discovers how native internet payments unlock what it can do on the web. x402 Origins: The Payment Quest ↓

Coinbase Developer Platform🛡️

19,796 次观看 • 25 天前

Everyone’s building agents. Few are building trust. For the Solana x402 Hackathon, we built Amiko Marketplace, the trust and commerce layer for agents. Identity, payments, and reputation unified on-chain.

Everyone’s building agents. Few are building trust. For the Solana x402 Hackathon, we built Amiko Marketplace, the trust and commerce layer for agents. Identity, payments, and reputation unified on-chain.

AMIKO

23,422 次观看 • 8 个月前

x402 is now live on OOBE. We finally revealed the Synapse x402 Explorer, showing how pay-per-request payments for RPCs and APIs actually work on-chain: Synapse enables instant settlement per request via the PayAI Network | x402 Facilitator facilitator, connecting agents and merchants through a fully on-chain, verifiable payment flow. No subscriptions, no cards, no intermediaries. Watch the video and follow the thread below to understand how it actually works 👇

x402 is now live on OOBE. We finally revealed the Synapse x402 Explorer, showing how pay-per-request payments for RPCs and APIs actually work on-chain: Synapse enables instant settlement per request via the PayAI Network | x402 Facilitator facilitator, connecting agents and merchants through a fully on-chain, verifiable payment flow. No subscriptions, no cards, no intermediaries. Watch the video and follow the thread below to understand how it actually works 👇

OOBE PROTOCOL

19,516 次观看 • 6 个月前

Trust built onchain has a way of moving people from watching to trying. Stacks is the home for Bitcoin-native finance.

Trust built onchain has a way of moving people from watching to trying. Stacks is the home for Bitcoin-native finance.

stacks.btc

16,620 次观看 • 11 天前

What if AI agents could transact without any friction? 🤖 No gas tokens. No monitoring. No complexity. x402 on Stable makes this possible. One token does it all ✅ USDT for both payment and fees. Simple, predictable, and built to scale ⚡

What if AI agents could transact without any friction? 🤖 No gas tokens. No monitoring. No complexity. x402 on Stable makes this possible. One token does it all ✅ USDT for both payment and fees. Simple, predictable, and built to scale ⚡

Stable

10,149 次观看 • 3 个月前

Blockchain security is evolving. R3conZ is a x402-native AI network built to find truth on-chain.

Blockchain security is evolving. R3conZ is a x402-native AI network built to find truth on-chain.

🅁 3 🄲 🄾 🄽 🅉

19,312 次观看 • 8 个月前

I’ve been watching x402 since Coinbase 🛡️ launched it in May 2025. I did a quick research pass. Here’s the snapshot ↓ Early integrations: • CoinGecko: x402 pay-per-use access for agents (shared by Coinbase Developer Platform🛡️). • Vercel: x402 AI starter template (x402 + modern AI stack demo). • Firecrawl: x402-powered search endpoint (pay per request). • Concordium: x402 + native age verification for agent payments. • Multiversᕽ: “agentic payments” built around x402 support. • AltLayer: building an “x402 Suite” for value exchange between agents. • Solana claims x402 has processed 35M+ transactions and $10M+ volume since launch. TL;DR x402 turns HTTP 402 “Payment Required” into a payment flow. A server returns a price for a request. The client pays in stables like USDC. Then the server returns the result. → Coinbase launched x402 via Coinbase Developer Platform (May 6, 2025). → Coinbase + Cloudflare announced the x402 Foundation (Sep 23, 2025). → Cloudflare added x402 support into its Agents SDK + MCP servers. Why? - AI agents need a clean way to pay for tools. - Data, compute, APIs, services. - No accounts, cards, or subscription screens. x402 is trying to make pay-per-request feel normal. Use cases that already make sense → Paid APIs Pay per call instead of subscriptions. → AI tool calls Pay per query, per inference, per task. → Agent-to-agent payments Software paying software automatically. → Micropaywalls Pay for one endpoint, one action, one piece of content. If this takes off, stablecoins stop being a story. They become how apps and AI agents pay for things online.

I’ve been watching x402 since Coinbase 🛡️ launched it in May 2025. I did a quick research pass. Here’s the snapshot ↓ Early integrations: • CoinGecko: x402 pay-per-use access for agents (shared by Coinbase Developer Platform🛡️). • Vercel: x402 AI starter template (x402 + modern AI stack demo). • Firecrawl: x402-powered search endpoint (pay per request). • Concordium: x402 + native age verification for agent payments. • Multiversᕽ: “agentic payments” built around x402 support. • AltLayer: building an “x402 Suite” for value exchange between agents. • Solana claims x402 has processed 35M+ transactions and $10M+ volume since launch. TL;DR x402 turns HTTP 402 “Payment Required” into a payment flow. A server returns a price for a request. The client pays in stables like USDC. Then the server returns the result. → Coinbase launched x402 via Coinbase Developer Platform (May 6, 2025). → Coinbase + Cloudflare announced the x402 Foundation (Sep 23, 2025). → Cloudflare added x402 support into its Agents SDK + MCP servers. Why? - AI agents need a clean way to pay for tools. - Data, compute, APIs, services. - No accounts, cards, or subscription screens. x402 is trying to make pay-per-request feel normal. Use cases that already make sense → Paid APIs Pay per call instead of subscriptions. → AI tool calls Pay per query, per inference, per task. → Agent-to-agent payments Software paying software automatically. → Micropaywalls Pay for one endpoint, one action, one piece of content. If this takes off, stablecoins stop being a story. They become how apps and AI agents pay for things online.

Stacy Muur

12,199 次观看 • 5 个月前

$🎧 AEON CEO Eddie on what x402 brings different: “What x402 really enables is micropayments—AI agents paying fractions of a cent for API calls, compute, or service.” This unlocks true streaming payments for the agent economy.$

🎧 AEON CEO Eddie on what x402 brings different: “What x402 really enables is micropayments—AI agents paying fractions of a cent for API calls, compute, or service.” This unlocks true streaming payments for the agent economy.

AEON.XYZ

174,552 次观看 • 8 个月前

📢🟡⚫ AEON has launched the x402 Facilitator on BNB Chain — a major milestone made possible through close collaboration with the BNB Chain team, marking a key step toward real-world AI payment adoption. Built natively on BNB Chain, AEON Facilitator adopts x402 standard to enable AI Agents to execute secure, verifiable transactions with onchain settlement & immutable receipts, initiating x402 payments to millions of service providers within the ecosystem. This launch builds the foundation for autonomous agents to transact securely, efficiently—making AI payment a reality.

📢🟡⚫ AEON has launched the x402 Facilitator on BNB Chain — a major milestone made possible through close collaboration with the BNB Chain team, marking a key step toward real-world AI payment adoption. Built natively on BNB Chain, AEON Facilitator adopts x402 standard to enable AI Agents to execute secure, verifiable transactions with onchain settlement & immutable receipts, initiating x402 payments to millions of service providers within the ecosystem. This launch builds the foundation for autonomous agents to transact securely, efficiently—making AI payment a reality.

AEON.XYZ

170,204 次观看 • 8 个月前

🚨 $XRP AND $RLUSD JUST WENT LIVE ON X402 x402 is the open standard letting AI agents pay for API calls, model inference, and services directly over HTTP backed by Visa, Mastercard, Amex, AWS, Google, Circle, Coinbase, Stripe, and more 👀 Thanks to a contribution from our partners at t54, XRPL is now a supported chain on x402 day one. That means XRPL agents can transact for API calls, AI inference, and services using XRP or RLUSD no card rails, no middlemen, pure machine-to-machine settlement.

🚨 $XRP AND $RLUSD JUST WENT LIVE ON X402 x402 is the open standard letting AI agents pay for API calls, model inference, and services directly over HTTP backed by Visa, Mastercard, Amex, AWS, Google, Circle, Coinbase, Stripe, and more 👀 Thanks to a contribution from our partners at t54, XRPL is now a supported chain on x402 day one. That means XRPL agents can transact for API calls, AI inference, and services using XRP or RLUSD no card rails, no middlemen, pure machine-to-machine settlement.

Xaif Crypto

49,299 次观看 • 27 天前

Introducing APIs for DeFi agents. A small experiment I am building. Give .Claude , .ChatGPT, .OpenClaw🦞 access to DeFi intelligence. Built on .Base and x402 to power payments with access to .Aave

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Mark Hinschberger

26,162 次观看 • 5 个月前

It's Independence Day... for agents. Stripe + x402 support on Agent Cloud lets your agents pay for their own compute. Autonomously. On-chain. In real time. No human in the loop. Only on

It's Independence Day... for agents. Stripe + x402 support on Agent Cloud lets your agents pay for their own compute. Autonomously. On-chain. In real time. No human in the loop. Only on

io.net

15,431 次观看 • 11 天前

What if your robot could walk into a café, place an order for you, and pay — all by itself? With x402, that future is now. No accounts. No API keys. Just one line of code for AI agents to make seamless, autonomous payments. Built with Coinbase Developer Platform🛡️'s AgentKit, brought to life by OpenMind 🤖☕

What if your robot could walk into a café, place an order for you, and pay — all by itself? With x402, that future is now. No accounts. No API keys. Just one line of code for AI agents to make seamless, autonomous payments. Built with Coinbase Developer Platform🛡️'s AgentKit, brought to life by OpenMind 🤖☕

OpenMind

124,143 次观看 • 1 年前

Enabling permissionless access for AI agents Vicky is building exactly that with BlockRunAI Built on Base with x402

Enabling permissionless access for AI agents Vicky is building exactly that with BlockRunAI Built on Base with x402

Base

24,440 次观看 • 1 个月前

x402 made payments native to HTTP. I made USDC payments native to sound waves ✨ Not as a gimmick. As a proof. 1/ The setup: Coinbase Developer Platform🛡️'s x402 protocol embeds payments into HTTP. It's brilliant. But I started wondering, if we can pay over HTTP, what else can we use to pay? Spoiler: anything that supports 138 bytes 2/ The realization: x402 is built on EIP-3009 - a 2020 standard that lets you sign payment authorizations offline. Someone else submits it on-chain. The signature just needs to get from A to B. HTTP is one way. Sound is another. 3/ What I built: x402hz: two devices negotiate a payment through 2400Hz audio tones. - Seller beeps "pay me $0.001 USDC" (30 bytes) - Buyer's device decodes, signs the EIP-712 for the transferWithAuthorization locally, beeps back (108 bytes) - Seller settles on-chain Total: 36 seconds of beautiful noise. 4/ The bigger point: If payments can travel over sound, they can travel over: - QR codes - NFC - Bluetooth - Light pulses - Anything that carries 138 bytes The payment primitive is transport-agnostic. x402 picked HTTP. The next protocol might pick something weirder. 5/ What this proves: EIP-3009 separates three things: - Authorization (offline, cryptographic) - Transport (literally anything) - Settlement (on-chain) x402 nailed #1 and #3. x402hz proves #2 is wide open. 6/ Credit: Huge thanks to the Coinbase Developer Platform🛡️ x402 team for building the protocol. I just... took it off-road. 7/ Next steps Code is open source. Go make payments, travel over something ridiculous (repo in the comments). 138bytes. That's all you need.

x402 made payments native to HTTP. I made USDC payments native to sound waves ✨ Not as a gimmick. As a proof. 1/ The setup: Coinbase Developer Platform🛡️'s x402 protocol embeds payments into HTTP. It's brilliant. But I started wondering, if we can pay over HTTP, what else can we use to pay? Spoiler: anything that supports 138 bytes 2/ The realization: x402 is built on EIP-3009 - a 2020 standard that lets you sign payment authorizations offline. Someone else submits it on-chain. The signature just needs to get from A to B. HTTP is one way. Sound is another. 3/ What I built: x402hz: two devices negotiate a payment through 2400Hz audio tones. - Seller beeps "pay me $0.001 USDC" (30 bytes) - Buyer's device decodes, signs the EIP-712 for the transferWithAuthorization locally, beeps back (108 bytes) - Seller settles on-chain Total: 36 seconds of beautiful noise. 4/ The bigger point: If payments can travel over sound, they can travel over: - QR codes - NFC - Bluetooth - Light pulses - Anything that carries 138 bytes The payment primitive is transport-agnostic. x402 picked HTTP. The next protocol might pick something weirder. 5/ What this proves: EIP-3009 separates three things: - Authorization (offline, cryptographic) - Transport (literally anything) - Settlement (on-chain) x402 nailed #1 and #3. x402hz proves #2 is wide open. 6/ Credit: Huge thanks to the Coinbase Developer Platform🛡️ x402 team for building the protocol. I just... took it off-road. 7/ Next steps Code is open source. Go make payments, travel over something ridiculous (repo in the comments). 138bytes. That's all you need.

Vitto Rivabella

40,343 次观看 • 7 个月前

We won Best Trustless Agent at the Solana x402 Hackathon! Amiko Marketplace turns x402 payments into a trustless, on-chain economy where agents have identity, reputation, and verifiable actions. The agent economy finally has a trust layer. What we built: - Agent Registry - On-chain Job Records - Feedback & Reputation System - Search + Discoverability Everything tied to real wallets, real actions, real performance. Agents aren’t just paying each other. Now they’re accountable. This is the foundation for a global network of autonomous agents that can be trusted, rated, and discovered. All on Solana. More agents. More you.

We won Best Trustless Agent at the Solana x402 Hackathon! Amiko Marketplace turns x402 payments into a trustless, on-chain economy where agents have identity, reputation, and verifiable actions. The agent economy finally has a trust layer. What we built: - Agent Registry - On-chain Job Records - Feedback & Reputation System - Search + Discoverability Everything tied to real wallets, real actions, real performance. Agents aren’t just paying each other. Now they’re accountable. This is the foundation for a global network of autonomous agents that can be trusted, rated, and discovered. All on Solana. More agents. More you.

AMIKO

24,112 次观看 • 7 个月前

x402 might be viral now, but IoTeX has supported it since may. Coinbase 🛡️'s pull request added IoTeX network + USDC support months ago, meaning any AI agent built on IoTeX can already use x402 for on-chain payments: that’s exactly what we show here in our Quicksilver alpha demo: agents like Bino and Caila paying each other in USDC directly on IoTeX chain. soon, Quicksilver will integrate x402 fully, enabling AI agents on IoTeX to seamlessly purchase data and utilities. the real-world AI agent economy is built on IoTeX.

x402 might be viral now, but IoTeX has supported it since may. Coinbase 🛡️'s pull request added IoTeX network + USDC support months ago, meaning any AI agent built on IoTeX can already use x402 for on-chain payments: that’s exactly what we show here in our Quicksilver alpha demo: agents like Bino and Caila paying each other in USDC directly on IoTeX chain. soon, Quicksilver will integrate x402 fully, enabling AI agents on IoTeX to seamlessly purchase data and utilities. the real-world AI agent economy is built on IoTeX.

IoTeX

138,795 次观看 • 8 个月前

#Nano Micropayments Using the x402 Protocol This demo uses an early Nano implementation of the #x402 open protocol for internet-native payments Instantly make #micropayments at the sub-cent level or lower. With zero fees. Public code coming soon. $XNO

#Nano Micropayments Using the x402 Protocol This demo uses an early Nano implementation of the #x402 open protocol for internet-native payments Instantly make #micropayments at the sub-cent level or lower. With zero fees. Public code coming soon. $XNO

NanoCharts Ӿ 📊

21,528 次观看 • 9 个月前