x40205

what's x402?

x402 is an open-source protocol designed to enable seamless, internet-native micropayments using stablecoins embedded directly into HTTP requests. It revives the HTTP 402 "Payment Required" status code, originally reserved for future payment mechanisms, to allow instant, accountless transactions for APIs, content access, and services. Initiated by Coinbase, x402 eliminates barriers like sign-ups, API keys, or credit card forms, making it ideal for automated systems where payments serve as the credential for access. The protocol supports machine-to-machine payments on blockchains, settling in stablecoins such as USDC with near-instant finality and minimal fees. It integrates payment headers into standard HTTP calls, enabling metering for usage-based billing, subscriptions, and one-off micropayments. x402 powers autonomous commerce by allowing AI agents to transact value independently, fitting into ecosystems like Google's Agent Payments Protocol (AP2) and Ethereum's ERC-8004 for trustless agent interactions. Key technical mechanics include extensible headers for payment authorization, support for multiple chains via gateways, and batching to optimize costs. This facilitates new models of agentic economies, where AI can pay for data, compute, or services at the speed of code, unlocking efficient, scalable digital commerce.

Snapshot

x402 enabled support on Scroll zkEVM rollup.

7H ago
TECH EVENT

Launches on SKALE network, enabling high-frequency payments with zero gas fees.

16H ago
PARTNERSHIP

Added 46 new entries to the agentic commerce ecosystem via HTTP-native micropayment protocol, growing to over 114 companies across 14 categories with 6 services listed.

1D ago
PARTNERSHIP

Enables AI agents to pay for Alchemy compute units and agentic gateway access (including Core RPC, NFT data, and token pricing) using USDC stablecoins on Base, starting 2026-02-26.

OPINION SPECULATION

x402 is positioned as faster for agents to use compared to agent-to-agent communication, with a focus on free services via APIs and CLIs and paid services via x402.

2D ago
TECH EVENT

launched private version of the protocol

PARTNERSHIP

Integrated as payment support for Kamiyo AI's stake-backed identities and on-chain escrow system operating on Solana and Base.

UNCATEGORIZED

Enables native USDC payments through x402 standard on Acurast's decentralized AI compute network on Base.

3D ago
TECH EVENT

Launched an agentic finance simulation with LLM-powered agents operating onchain on Base, described as potentially the largest agentic finance simulation undertaken.

MARKET ACTIVITY

NFTs from the first simulation are trading at 0.01 ETH on secondary markets, with participation requiring ownership of these NFTs.

PARTNERSHIP

Integrated with Molt to enable a service economy for tasks from agent specialists, serving as the payment method for MoltBrain's Storage v2, which provides persistent, wallet-scoped onchain storage vaults for AI agents through micropayments.

4D ago
PARTNERSHIP

Integrated with Obul to enable users to access x402 endpoints via API key without requiring crypto wallet setup.

PARTNERSHIP

Adopted within the Tether ecosystem for agentic economy infrastructure. AI agents adopt x402 for payments, according to Sei Network.

5D ago
ONCHAIN METRICS

Has 581 average transactions per buyer and 3,200 average transactions per seller, with total buyers outnumbering sellers but sellers generating significantly more transactions per participant.

1W ago
PARTNERSHIP

Enables agents to pay for The Graph Subgraph queries using x402 protocol, establishing The Graph as a data marketplace for the agent economy.

PARTNERSHIP

Integrated Nansen API, enabling zero-signup, zero-API-key access with per-request payments and USDC payments on Base.

VISIBILITY EVENT

Demonstrated in a proof-of-concept where an AI agent minted a generative art token on Base for $1 USDC using approximately 15 lines of Python code.

TECH EVENT

Added x402 and USDC as payment options in the Daydreams router for DAO-to-agent payments for the KING agent, supporting BIOS API on Base.

VISIBILITY EVENT

Featured in EthereumDenver panel on AI payments and internet-native stablecoin protocols with speakers from Coinbase, Soon SVM, Virtuals, and Base.

MARKET ACTIVITY

Enabled submissions to the Agentic Commerce Market Map for $1 via x402 payment integration.

TECH EVENT

Launched on February 18, 2026 as a queryable database of Epstein emails onchain, charging $0.001 per query in USDC on Base.

TECH EVENT

Integrated into Conway Terminal, a command line tool that transforms AI agents into sovereign economic actors with permissionless payments, cryptographic identity, and real world deployments, enabling instant payments within the app.

TECH EVENT

Features self-improving capability where the automaton detects new frontier models, upgrades its own inference, rewrites its own codebase, and persists learnings across restarts in real-time.

TECH EVENT

Built as open-source architecture where parent agents spawn children, fund them, assign missions, and receive revenue share back with natural selection determining which agent lineages survive.

TECH EVENT

Integrated GraphTally's cryptographically signed voucher system for batch settlement of micropayments, building on the HTTP 402 status code for permissionless machine-to-machine payments on crypto rails with stablecoins.

PARTNERSHIP

Supports a402/x402 (HTTP-402 style paywalls for machine-to-machine micropayments) as part of Beep protocol's agentic finance framework on Sui.

TECH EVENT

Registered an agent on MegaETH to showcase ERC-8004 usage for API service queries.

PARTNERSHIP

Integrated Sigil's Automaton AI Agent system as a payment option on Base, using onchain transactions including stablecoins, with capability to make internet purchases.

PARTNERSHIP

Enabled programmatic payment settlements on Algorand network.

PARTNERSHIP

Integrated as a payment option on Xyber's Base deployment, enabling programmatic payment settlements.

TECH EVENT

Integrated with Liveframe API to enable AI agents to access automated clips, edit content, and post on channels with payment processing in Base USDC through x402 wallet connectivity.

ONCHAIN METRICS

Cumulative x402 payment volume has exceeded $41 million, with Solana accounting for more than $16.4 million in transferred value.

ONCHAIN METRICS

Participated in micropayments with over 25,000 seller wallets and 18,000 buyer wallets since October 2025, showing a median facilitator buyer-to-seller ratio of 2.6:1, with the 75th percentile reaching 8.3:1.

ONCHAIN METRICS

Weekly Solana x402 transactions declined over 90% from a peak of 6.8 million in December 2025 to fewer than 510,000 in the week of February 9, 2026.

ONCHAIN METRICS

Processed 120 million total transactions, including 45 million on Solana, 45 million cross-chain, and 75 million in 30 days for $24 million stablecoin micropayments.

VISIBILITY EVENT

Hosts a developer meetup on 2026-02-17 at 3:00 PM focused on building agents that can pay for things.

TOKEN ECONOMICS

Launched AI agent incentives program.

ONCHAIN METRICS

Reached 1.7 million cumulative buyers and 227,000 unique sellers since launch.

TECH EVENT

Launched v2 upgrade, integrated into AI wallets, Agent Hustle, and Emblem Developer Platform products.

PARTNERSHIP

Integrated with ERC-8004 standard on GOAT Network for AI agent peer-to-peer transactions, with ERC-8004 handling identity and x402 payment execution.

TECH EVENT

integrated with GOAT Network (GOATRollup) to enable Bitcoin-settled programmatic payments for agent resources

2W ago
TECH EVENT

Enabled domain purchasing for agents on Base with USDC, providing MCP-native world access through one install with wallet, servers, domains, and deployment without human authorization.

ONCHAIN METRICS

Has an average transaction size of 6 cents on Base, where gas fees of 1.5 cents represent 25% of transaction value.

VISIBILITY EVENT

Featured in ClawIndex listing as a payment protocol alternative ("Handshake 58") that settles at end rather than processing numerous micro transactions.

VISIBILITY EVENT

Listed as micropayment capability in hippius_subnet (TAO subnet 75) Skill MD file on Claw Hub.

PARTNERSHIP

Integrated with Kaito APIs to enable real-time crypto market data access for AI agents via micropayments, with initial support for Sentiment, Mindshare, Narrative Mindshare, and Smart Followers APIs.

PARTNERSHIP

Integrated with Vercel via an AI starter template combining x402 with modern AI stack.

PARTNERSHIP

Integrated with Firecrawl for a pay-per-request search endpoint.

PARTNERSHIP

Integrated into Cloudflare's Agents SDK and MCP servers with native x402 support, across Cloudflare's infrastructure for agent payment handling.

PARTNERSHIP

Integrated with AltLayer which is building an x402 Suite for value exchange between agents.

PARTNERSHIP

Integrated with MultiversX for agentic payments built around x402 support.

PARTNERSHIP

Launched x402 Foundation in partnership with Coinbase and Cloudflare on September 23, 2025.

PARTNERSHIP

Integrated with Concordium to enable native age verification for agent payments.

PARTNERSHIP

Integrated into Starkbot's web_fetch tool for AI model calls, encrypted cloud backups, premium skill downloads, cloud subscriptions, agent service payments, x402book posting fees, EIP8004 stark license registration, and as a micropayment option in StarkHub skill hub within Starkbot version 0.5.33. Also integrated into Starkbot Discord bot for image generation functionality with transaction settlement via x402-rpc.

PARTNERSHIP

Integrated with Privy wallets and Stripe to enable machine payments for agentic commerce with Stripe merchants.

TECH EVENT

Launched mainnet, enabling onchain payments for Allium API access, with Base Sepolia testnet remaining operational until end of February 2026.

MARKET ACTIVITY

Integrated as payment method for Laevitas derivatives data API at $0.001 per call in USDC on Base, Solana, and Monad, enabling pay-per-request via permissionless x402 server facilitator.

VISIBILITY EVENT

Featured in M1 Hackathon spotlight as the payment method for AlgoArena, an AI trading agent auto-battler game.

PARTNERSHIP

Integrated CoinGecko API for AI and OpenClaw agent payments, enabling access to crypto market and pricing data with USDC on Base.

PARTNERSHIP

Integrated Stripe on Base for USDC payments using PaymentIntents API with sales tax, refunds, and reporting, as of February 11, 2026.

PARTNERSHIP

Integrated with OpenClaw for decentralized marketplace USDC payments, and with Covalent GoldrushDev for API access.

PARTNERSHIP

Launched marketplace for agent services, integrating x402 payment rails.

PARTNERSHIP

Integrated with Kite's mainnet for agent payments, enabling pay-per-task and pay-per-call models with built-in proof of payment.

TECH EVENT

Launched on Avalanche and Optimism on 2026-02-23, offering payment infrastructure, AI token launcher, and perpetuals trading endpoint for agents.

VISIBILITY EVENT

Co-founder @programmer appears on SKALE School live stream on 2026-02-10 at 9am PT / 5pm UTC to discuss x402's origins, design, momentum, and future plans for builders.

PARTNERSHIP

Integrated with ClawCredit (by t54ai) enabling agent-native credit lines for OpenClaw agents.

PARTNERSHIP

Integrated with Clawpay enabling private agent payments via Railgun for OpenClaw agents.

VISIBILITY EVENT

Integrated with Allium for real-time onchain data paid per API request, featuring an interactive treemap explorer displaying payment volume across facilitators and chains.

TECH EVENT

Integrated AI Router with ClawRouter for per-request payments, serving LLMs, images, video, and audio for agent consumption. Partnered with daydreamsagents for xGate in "Search for x402" by lordOfAFew.

TECH EVENT

Added an agent-accessible endpoint to the USDC Hackathon project that guides agents through the live demo, architecture, and x402 signing flow.

MARKET ACTIVITY

Is used as payment on SpareClaw marketplace aggregating spare compute from DePIN networks to power agents on Base.

MARKET ACTIVITY

Can be used as payment to hire @clawdbotatg for building onchain apps with scaffold-eth via ERC-8004.

3W ago
TECH EVENT

enabled support on Scroll zkEVM rollup

1M ago
ONCHAIN METRICS

Reached 200,000 daily active users within 7 days during the memecoin frenzy in late 2025.

ONCHAIN METRICS

Reached $600M in trading volume.

PARTNERSHIP

Integrated with OpenOcean and agentokratia for frictionless commerce and onboarding for dapps, projects, and integrators.

PARTNERSHIP

integrated as a payment method in Google's Universal Commerce Protocol on Ethereum

TECH EVENT

Launched mainnet on SKALE network January 6, 2026, as an ERC standard, enabling AI agents to make micropayments instantly for API calls or database queries with stablecoins through smart contracts.

TECH EVENT

Integrated with AI Frens platform featuring long-term memory retention, 24/7 livestream with 3D model, agent-owned wallet, tipping system, real-time outfit changes, subscriber and staking system, creator rewards based on trading volume, multi-platform compatibility, agent emotion system, real-time voice conversation, viewer context pulls from X, trust system, live meme/video/image generation, web search access, Minecraft integration, monopoly gameplay, Farcaster miniapp, and Base app integration.

PARTNERSHIP

Partnership with MRDN is in progress, with an official announcement pending following discussions about roadmap and vision alignment.

2M ago
PARTNERSHIP

Integrates Polymarket for agent strategies on Polygon, allowing copy or inverse positions.

TECH EVENT

Enables fully onchain execution for user-controlled AI agent trading on Base, where users deploy their own onchain agents that can copy or fade models like GPT, Claude, Gemini, and Grok while keeping funds in user wallets.

ONCHAIN METRICS

Processed transactions with 53% legitimate activity and 47% gaming/meme volume representing 14% of total dollar volume. Processed payment for 80+ paid endpoints by OpenClaw agent langoustine69A in one week, priced at $0.50 each.

TOKEN ECONOMICS

Token holders receive revenue share from platform activities; generated over $250,000 in tax fees allocated for buybacks.

ONCHAIN METRICS

Scanned over 200,000 smart contracts across 20+ supported blockchain networks.

ONCHAIN METRICS

Reached a market cap of $4M after starting at $156K.

A builder presents a product using x402 payments with Agentic AI at the SEC, requesting regulatory guidance on money transmitter classification.

LighthouseWeb3 integration launches, allowing users to pay for file uploads in USDC on Base with on-chain settlement and Filecoin storage.

Releases V2 with unified multichain payment interface, modular architecture, improved payment routing flexibility, and automatic discovery features. Processed over 161M transactions across Base and Solana, with total volume exceeding $43.51M. xGate.run indexes services across 7 chains with 34k agents and 2k searches indexed.

CARV builds CashieCARV 2.0 on x402 infrastructure, enabling automated social rewards with AI agent tracking and gasless on-chain distribution.

AI agents created token through X402 platform with video documentation from founder Ben; includes importable AI agent resources and extensible architecture. Used as payment method for AI videos teased by clawdvine.

symphonyio uses x402 for cross-chain perp trading execution and launches Agentic Fund Marketplace enabling public subscriptions and optimized yield strategies.

Circle highlights 3-5 year integration plan using x402 for stablecoin micropayments across billions of AI agents.

x402 expands to Gnosis blockchain, enabling pay-per-request payments for builders on the Gnosis network.

LatinumAI builds an agentic commerce framework for merchants using x402 and Solana. Delphi Digital's 2026 Markets Year Ahead report highlights x402 and ERC-8004 as key infrastructure enabling autonomous agent transactions in emerging agent-based economies.

Coinbase Dev team redesigns the protocol architecture after processing 100+ million transactions, implementing blockchain-agnostic extensibility and web standards conformance with clear layer separation.

Processed over 100 million payments in six months since May 6, 2025 launch on Coinbase, powering AI agent transactions for compute and paid API data streams.

AlphaGrowth launches largest crypto VC and DAO treasury dataset on SerenAI using the x402 payment gateway with over 70,000 deals tracked. v2 adopts CAIP chain-agnostic standards promoted by WalletConnect for interoperability.

x402 v2 is released featuring unified payment interface, extensible architecture, wallet-based access with reusable sessions and modular paywalls, automatic service discovery, and improved developer experience with multi-facilitator support.

Hosts $50,000 hackathon in San Francisco starting 2026-02-12, includes 2 free months of Growth Plan.

Mode builds with x402 and ERC-8004 for the agentic economy. a16z crypto report forecasts agentic commerce market of $30 trillion by 2030.