APIs for
Autonomous Agents
Discover, pay, and access APIs instantly,
no accounts or API keys required.
Four structural incompatibilities
with autonomous agents.
Contemporary API infrastructure was designed for human-operated systems. As AI agents increasingly execute autonomous, complex goals requiring real-time external data, four structural blockers emerge.
Human-Gated Authentication
Platforms require credit cards, KYC verification, and manual account creation. Autonomous agents cannot satisfy these requirements without human delegation.
API Key Lifecycle Overhead
Managing, rotating, and securing centralized API keys introduces human oversight dependencies and systemic security exposure via key leakage.
Micropayment Floor Incompatibility
Credit card transaction floors make sub-cent pricing economically unviable, forcing agents into monthly subscriptions for data they may require once per session.
Centralized Platform Extraction
Aggregator platforms retain 20–30% of provider revenue, impose settlement delays of 7–30 days, and create single points of failure for data access infrastructure.
Payment-as-
authentication.
A five-step
protocol.
The approach replaces credential-based authentication with payment proof across three distinct system components, requiring zero human interaction end-to-end.
Registry Discovery
The agent queries the on-chain APIRegistry contract on Morph L2 to resolve an endpoint URL and its USDC price per call. No off-chain directory, no account required.
Challenge Initiation
The agent issues an unsigned GET request. Provider middleware intercepts it and returns HTTP 402 Payment Required — containing the endpoint ID, required USDC amount, facilitator contract address, chain ID, and instructions.
Autonomous Payment Authorization
The agent constructs and signs an EIP-3009 USDC transferWithAuthorization using its private key. A unique nonce and short-expiry deadline prevent replay attacks. The signed payload is attached to the X-Payment header.
On-chain Settlement Verification
Provider middleware calls X402Facilitator.settle() on Morph L2. The contract verifies the EIP-712 signature, enforces nonce uniqueness, validates the deadline, and executes the USDC transfer — 99% to the provider, 1% to the protocol treasury.
Data Release
Upon confirmed on-chain settlement, provider middleware releases the API response with HTTP 200 OK. The agent receives the data. The entire cycle — discovery to data receipt — requires zero human interaction.
Numbers that scale.
Provider take-home rate
vs 70–80% on Web2
Minimum viable unit price
enabled by L2 scaling
Settlement time
vs 7–30 days on Stripe
Daily protocol revenue
at 50K active agents
Ready to build theagent economy?
Deploy your first endpoint in minutes. No KYC. No subscriptions. Just a wallet and USDC.