Unlocking Autonomous Value Transfer
In the age of AI, software agents act autonomously—performing data search, querying MCP services, calling micro-APIs, and parsing complex information. Yet, existing payment structures still rely on credit cards and manual 2FA processes built for humans.
The x402 specification bridges this critical gap. By structuring clear programmatic payment gates directly inside HTTP headers, we allow servers to offer paywalled access to endpoints that AI can evaluate, authorize, and purchase in real time using secure stablecoins.
Our focus remains on building developer-centric tools that respect user-set bounds, providing cryptographic proof and complete security without middle-man vulnerabilities.
// x402 Compliance Guard
{"protocol": "x402-v0.9",
"authorizer": "user-preapproved-policy",
"replay_protection": true,
"spend_limits": {
"max_per_call_usdc": 0.005,
"daily_allowance_usdc": 1.50
}
}
Policy-Based Security
Every transaction is validated against immutable client-set rules. Autonomous does not mean unregulated.
Stablecoin Settlement
Instant digital dollar settlement over Layer-2 blockchains avoids the high fees and delays of standard payments.
Open Standards
Fully compatible with open-source Model Context Protocol (MCP) and semantic web standardizations.