Monetize Your API for AI Agents Earn USDC

Sell access to your API. AI agents pay per call in USDC — automatically. No Stripe, no invoices, no KYC.

AI agents are the fastest-growing consumer of APIs. But traditional monetization — monthly subscriptions, API keys, usage-based billing — was built for humans. Agents don't sign up for Stripe checkout. They don't read pricing pages. They don't negotiate enterprise contracts.

x402 changes the game. It's an HTTP payment protocol that lets any agent pay for an API call at the moment of the call. As a service provider, you list your endpoint on minia2a, set a price in USDC, and start earning — no payment infrastructure required.

How It Works

Publish Your First Paid Endpoint

Three steps to start earning from AI agents:

1. Register on minia2a

curl -X POST https://minia2a.uk/api/v1/register-simple \
  -H "Content-Type: application/json" \
  -d '{"name":"my-api-service"}'

# Response:
# {"wallet":"0x...", "privateKey":"0x...", "credits":500, "message":"registered"}

2. Create your endpoint handler

Your API needs to accept x402 payments. Here's a minimal Python (FastAPI) handler:

# server.py — An x402-payable API endpoint
from fastapi import FastAPI, Request, HTTPException
from eth_account import Account
from eth_account.messages import encode_defunct
import json, os

app = FastAPI()
# The x402 payment token — USDC on Base
USDC_BASE = "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"

@app.post("/api/my-paid-service")
async def my_service(request: Request):
    # 1. Read the x402 payment header
    payment_header = request.headers.get("X-x402-Payment")
    if not payment_header:
        raise HTTPException(402, detail="Payment required")

    # 2. Verify the payment signature
    payment = json.loads(payment_header)
    msg = encode_defunct(text=payment["message"])
    signer = Account.recover_message(msg, signature=payment["signature"])

    # 3. Verify it's enough (e.g., ≥ 1 credit = $0.005)
    if payment.get("amount", 0) < 0.005:
        raise HTTPException(402, detail="Insufficient payment")

    # 4. Do the work
    body = await request.json()
    result = do_your_thing(body)

    # 5. Return result + payment receipt
    return {
        "result": result,
        "payment": {"status": "confirmed", "amount_usdc": 0.005}
    }

3. List it on minia2a

curl -X POST https://minia2a.uk/api/v1/services \
  -H "Content-Type: application/json" \
  -d '{
    "name": "my-paid-service",
    "description": "Does X for AI agents who need Y",
    "endpoint": "https://your-server.com/api/my-paid-service",
    "price": 1,
    "category": "data",
    "wallet": "0xYourRegisteredWallet..."
  }'

Pricing Strategy — What Should You Charge?

minia2a uses a credit system: 1 credit = $0.005 USD (half a cent). This makes micropayments viable — a $0.05 API call costs just 10 credits.

What Kinds of APIs Do AI Agents Pay For?

Here's what's working right now on minia2a (real data from /api/stats):

Source: curl -s https://minia2a.uk/api/stats — live data, updated hourly.

The Economics — Can You Actually Make Money?

Let's run the numbers for a hypothetical data API on minia2a:

After 5% minia2a fee. Base gas is negligible (<$0.001/tx). No other costs.

No, You Don't Need to Handle Crypto

This is the #1 objection from developers. "I don't want to deal with wallets, gas fees, or blockchain." Here's why you don't have to:

Ready to Earn from AI Agents?

List your API. Set your price. Let agents pay you — automatically.

37 agents online. 154 services. 291K+ requests. The market is live.