AGENT CONTROL CONSOLE

Autonomous Payments for Intelligent Ai Agents

A hyper-fast x402 execution layer that lets AI agents negotiate, communicate, and settle USDC payments on Solana — without human intervention.

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Sub-second Settlementx402 Payment ProtocolUSDC Micropayments
A2A
AGENTS: 1,247 ACTIVE
TPS: 65,000+
LIVE FEED

Built for developers powering the next generation of autonomous AI agents

Your Agent Stack
Your Infrastructure
Your AI Models
Your Payment Rails
Your Settlement Layer

Contract Address

Official ZephyrosAI smart contract on Solana

BajMbiod65oQ9SVv5cTL5ZsNkaK8wXsbASUJFYhEpump
WHAT THIS PROTOCOL ENABLES

A Payment Rail Designed for Machines, Not Humans

AI agents can call services, negotiate pricing, request invoices, and settle payments autonomously — all without human intervention or approval workflows.

The protocol uses the x402 Payment Standard (HTTP 402) as a native way to gate resources and APIs, enabling true machine-to-machine commerce.

Settlement happens on Solana using USDC for stable, low-cost micropayments with sub-second finality and minimal fees.

  • Agent-to-Agent (A2A) communication
  • x402-powered payment gating
  • Autonomous settlement workflows
Agent A
Requester
x402 Gateway
Payment Gate
Solana Settlement
USDC Transfer
Agent B
Provider
SYSTEM MODULES

Core Protocol Components

Four interconnected modules that enable autonomous agent commerce from communication to settlement.

A2A Messaging Layer

  • JSON-RPC messaging protocol
  • Encrypted agent communication
  • Service discovery & routing

x402 Payment Engine

  • HTTP 402 payment challenges
  • Automatic invoice generation
  • Multi-token support

Autonomous Negotiation Logic

  • Real-time price negotiation
  • Budget constraint handling
  • Priority-based execution

Solana Settlement Layer

  • Sub-second USDC transfers
  • Transaction batching
  • Finality confirmation
BUILD AN AGENT IN MINUTES

Build Autonomous Agents with a Few Lines of Code

The x402 SDK handles payment negotiation, settlement, and confirmation so you can focus on building intelligent agents.

agent.ts
1"text-primary">import { X402Agent } "text-primary">from '@x402/sdk';
2"text-primary">import { Connection } "text-primary">from '@solana/web3.js';
3
4// Initialize your autonomous agent
5"text-primary">const agent = "text-primary">new X402Agent({
6  wallet: myWallet,
7  network: 'mainnet-beta',
8  budget: { maxPerTx: 1.00, currency: 'USDC' }
9});
10
11// Send an x402 payment request
12"text-primary">const response = "text-primary">await agent.request({
13  endpoint: 'https://api.provider.ai/generate',
14  method: 'POST',
15  body: { prompt: 'Analyze this dataset...' }
16});
17
18// Payment is automatically negotiated and settled
19console.log(response.data);
20// → { analysis: '...', cost: 0.002, txHash: '5Xy...' }
Terminal Output
FLOW VISUALIZER

How Agents Talk, Pay, and Settle

Agent ClientREQUESTER
A2A ProtocolMESSAGING
x402 GatewayPAYMENT ENGINE
Solana NetworkSETTLEMENT
Service AgentPROVIDER
01

Communicate

Agents communicate and negotiate via the A2A messaging protocol.

02

Challenge

x402 gateway issues payment challenges for resource access.

03

Settle

USDC settlement clears on Solana with sub-second finality.

WHY IT MATTERS

Built for the Agent Economy

Every feature designed to enable autonomous, scalable, and cost-effective agent commerce.

Sub-Second Settlement

Payments clear in under 400ms on Solana, enabling real-time agent interactions without blocking workflows.

Ultra-Low-Cost Micropayments

Transaction fees under $0.001 make micropayments economically viable for pay-per-request AI services.

Native x402 Payment Standard

HTTP 402 status codes provide a web-native way to gate APIs and resources with automatic payment challenges.

Agent-First Architecture

Built from the ground up for machine-to-machine commerce with no human intervention required.

USDC-Based Stability

Settlement in USDC eliminates volatility risk and provides predictable pricing for agent budgets.

Production-Ready SDK & Tools

TypeScript SDK, CLI tools, and comprehensive documentation to get your agents running in minutes.

ACCESS TIERS

Choose How Deep Your Agents Go

From prototyping to production-scale agent networks, we have the infrastructure to support your vision.

Sandbox

For experimentation

Free
  • 100 API calls/day
  • Test network access
  • Community support
  • Basic SDK features
  • Single agent deployment
MOST POPULAR

Builder

Pay-as-you-go

$0.001per transaction
  • Unlimited API calls
  • Mainnet-beta access
  • Priority routing
  • Advanced SDK features
  • Multi-agent support
  • Email support

Enterprise Mesh

Custom SLAs

Custom
  • Dedicated infrastructure
  • Custom rate limits
  • Advanced monitoring
  • Private deployments
  • Integration support
  • 24/7 dedicated support
FREQUENTLY ASKED QUESTIONS

Everything You Need to Know

x402 is a payment standard built on HTTP status code 402 (Payment Required). It provides a web-native way for services to request payment before granting access to resources. When an agent requests a protected endpoint, the server responds with a 402 status and payment details. The agent's SDK automatically handles payment negotiation and settlement, then retries the request.

Solana provides sub-second finality (~400ms), transaction costs under $0.001, and throughput of 65,000+ TPS. These characteristics are essential for agent micropayments where latency and cost would otherwise make pay-per-request models economically unviable. Additionally, Solana's programmable settlement enables complex multi-party payment flows.

No. The x402 protocol settles payments in USDC, a widely-adopted stablecoin. This eliminates volatility risk and ensures predictable pricing for both agents and service providers. Agents can maintain USDC budgets and providers receive stable-value payments without exposure to crypto price fluctuations.

Agents authenticate using their Solana wallet keypairs. When initializing the SDK, you provide a wallet that the agent uses to sign payment transactions. The protocol verifies signatures on-chain, ensuring cryptographic proof of payment authorization without requiring traditional API keys or OAuth flows.

Yes. While the protocol is designed for autonomous agent operations, humans can interact with x402-enabled services directly through the SDK or CLI tools. You can also configure agents with approval workflows that require human confirmation for payments above certain thresholds.

When a payment is approved, the agent's SDK constructs a Solana transaction that transfers USDC from the agent's wallet to the provider's wallet using the SPL Token program. The transaction is signed, submitted to the Solana network, and confirmed within ~400ms. The SDK monitors for finality and retries the original request once settlement is confirmed on-chain.

SPIN UP YOUR FIRST AGENT

Spin Up Your First Autonomous Agent

Connect your stack, configure your rules, and let your agents handle the rest. Start building the future of machine-to-machine commerce today.

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