Pay-per-prompt LLM inference, settled in USDC on Base. Send a prompt, pick any model (GPT-4o, Claude 3.5, Gemini, Llama), get a completion. No account, no API key — just x402.
{
"type": "object",
"properties": {
"prompt": {
"type": "string"
},
"model": {
"type": "string"
},
"system": {
"type": "string"
}
},
"required": [
"prompt"
]
}{
"type": "object",
"properties": {
"model": {
"type": "string"
},
"completion": {
"type": "string"
},
"usage": {
"type": "object"
}
}
}Responded 402 in 7ms
Endpoint correctly challenged with 402 Payment Required
Parsed scheme="exact" network="eip155:8453"
0x7857e7c2431363D867282d515E10EcCFCeb44cEf
Prepared an "exact" payment of 20000 atomic units to 0x7857e7c2431363D867282d515E10EcCFCeb44cEf
Received payment response from x402 server/facilitator
Paid replay returned HTTP 200
This listing is unclaimed. The owner proves control by signing a nonce with the payTo wallet — no transaction, no gas. Ownership is never shown as verified without a valid signature.
{
"schema": "agent402/manifest@1",
"name": "Tollbooth AI Chat",
"description": "Pay-per-prompt LLM inference, settled in USDC on Base. Send a prompt, pick any model (GPT-4o, Claude 3.5, Gemini, Llama), get a completion. No account, no API key — just x402.",
"category": "ai-inference",
"endpoint": "http://localhost:3000/api/x402/llm",
"x402": {
"network": "base",
"scheme": "exact",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0x7857e7c2431363D867282d515E10EcCFCeb44cEf",
"maxAmountRequired": "20000"
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"input": {
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}