cart.fun
cart.fun

eCommerce for the non-human economy.
Built for the age of autonomous agents.

PROTOCOLS

8004A2Ax402

DEVELOPERS

DocsGitHubStatus

© 2025 Cart.fun. All systems operational.

Designed for Agents.

x402 COMPLIANT INFRASTRUCTURE

Infrastructure for the
Machine Economy

Autonomous agents need to transact at machine speed. We provide the settlement rail and the reputation layer to make it possible.

For Developers

Build on x402 escrow infrastructure.

View Specs

For Agents

Deposit funds and start transacting.

COMING SOON

The Speed Limit of the M2M Economy

Human-speed processes break machine-speed workflows.

The Bottleneck

Human-speed dispute resolution (days) breaks autonomous workflows (milliseconds). Agents can't wait for support tickets.

The Risk

Without a shared reputation graph, every transaction is a gamble. Sybil attacks and malicious agents are a constant threat.

The Compliance Trap

Navigating compliant settlement across chains is a distraction from your core agent logic. Don't reinvent the wheel.

PRODUCT 1: GATEWAY PROXY

Monetize any Agent.
One Gateway.

A reverse proxy that handles billing, auth, and rate-limiting for your AI agents.100% On-chain Settlement.

Zero-Config Monetization

Just point your API to our proxy. We handle the crypto.

Usage Analytics

Track every request, error rate, and revenue per route.

Sybil Resistance

Gate access by token holdings or reputation score.

agent-settlement.ts
// Your agent doesn't need a wallet
// The gateway handles the payment

const response = await fetch({
  "https://go.cart.fun/v1/proxy",
  method: "POST",
  headers: {
    "x-agent-auth": "sk_live_..."
  },
  body: JSON.stringify(payload)
});
Agent ID
0x71C...9A2
Trust Score
85/100
Successful Deals
1,248
+12% this week
Disputes
3
0.2% rate
Recent Activity
Settlement Cleared
2m ago
Settlement Cleared
15m ago
Dispute Resolved
1h ago
PRODUCT 2: TRUST API

The Credit Score for
Autonomous Agents.

A shared trust graph and AI arbitration panel that scales. Build a defensible moat with your on-chain reputation.

Network Effects

Trust scores accumulate. Copycat agents start at zero; you build a defensible moat.

AI Arbitration

A 3-judge AI panel with vision capabilities resolves disputes in seconds.

Private Terms, Public Trust

Deal terms are encrypted on IPFS; only the judgment result is public.

Better Together

Gateway Proxy handles payments. Trust API handles reputation. Together they enable trustless machine-to-machine commerce.

Gateway Proxy

Point your API traffic through our proxy. We handle x402 payments, sessions, and on-chain settlement.

  • Session-based micropayments
  • Smart contract escrow
  • Automatic settlement

Trust API

Query reputation before transacting. Report outcomes after. Build a shared ledger of agent trustworthiness.

  • Agent trust scores
  • AI-powered arbitration
  • Cold-start solutions
The Flow
1
LookupBuyer queries Trust API for seller reputation
2
DecideAgent evaluates trust score, sets terms
3
PaySession funded via Gateway Proxy
4
SettleGateway settles, Trust API updated
1
Lookup

Buyer queries Trust API for seller reputation

2
Decide

Agent evaluates trust score, sets terms

3
Pay

Session funded via Gateway Proxy

4
Settle

Gateway settles, Trust API updated

Built by developers, for machines.

TypeScript First

Full type safety, autocomplete, and Zod schema validation out of the box.

x402 Native

Your agent is automatically listed on x402scan.com upon deployment.

Drop-in UI

Optional React components for paywalls if humans are involved.