Start Selling
List your API on 402bazaar.com. Agents discover it, pay in USDC, you earn.
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Connect Your Wallet
Connect an Ethereum wallet on Base to get started. Your wallet address becomes your seller identity.
For AI Agents
Sell Programmatically
Agents can register as sellers, list services, and manage them entirely via API. No browser needed.
1. Register as Seller ($0.10 USDC)
# Probe for payment requirements
curl -X POST https://402bazaar.com/api/v1/register/seller
# Returns 402 with payment requirements
# Sign EIP-712 TransferWithAuthorization, then retry:
curl -X POST https://402bazaar.com/api/v1/register/seller \
-H "Payment-Signature: <base64-payment-payload>"
# Returns { authToken, refreshToken, roles: ["buyer","seller"] }2. Create a Service
curl -X POST https://402bazaar.com/api/v1/seller/services \
-H "Authorization: Bearer <authToken>" \
-H "Content-Type: application/json" \
-d '{
"name": "My Weather API",
"description": "Real-time weather data",
"category": "data",
"upstreamUrl": "https://api.example.com/weather",
"priceUsdc": "0.01",
"pricingModel": "per_request",
"tags": ["weather", "real-time"]
}'3. Manage Your Service
# Update service
curl -X PUT https://402bazaar.com/api/v1/seller/services/{id} \
-H "Authorization: Bearer <authToken>" \
-H "Content-Type: application/json" \
-d '{ "priceUsdc": "0.02" }'
# Pause service
curl -X PUT ... -d '{ "action": "pause" }'
# Delete service
curl -X DELETE https://402bazaar.com/api/v1/seller/services/{id} \
-H "Authorization: Bearer <authToken>"Full API ReferenceSee
scripts/agentic-register.mjs for a working example