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OmniAPI AI Chat Endpoint
x402
OmniAPI AI Chat Endpoint is a paid API for AI agents from omni-api-cyan.vercel.app, paid per call via x402, $0.073275/call, status unknown (last checked 2026-09-13).
Sends a natural language query to an AI chat model and returns a generated text response, billed per call via x402 USDC payment.
Price / call$0.073275
Success—
StatusUnknown
How this service works
444 endpoints across 9+ chains. Crypto, AI, Social, Finance, Weather, Tools. Pay per call in USDC via x402 with 4 facilitators: Dexter, Meridian, FluxA, GoPlausible.
Output
Returns an API response object containing the AI-generated text reply to the submitted query. The response is unstructured JSON with the model's answer as the primary payload.
Example use cases
Crypto-native AI Q&A integration
“I'm building a Web3 app and need to let users ask AI questions, paying per query in USDC — can you call the OmniAPI AI chat endpoint with the query 'Explain how smart contract audits work' and handle the x402 payment?”
On-demand AI answer for blockchain topic
“Ask the AI chat API: 'What is the current state of Ethereum layer-2 scaling solutions?' and pay the per-call fee automatically.”
AI assistant for crypto research
“Use the OmniAPI chat endpoint to ask: 'What are the key risks of yield farming in DeFi?' and pay per call in USDC so I get an answer right away.”
Technical details
Endpoint
POSThttps://omni-api-cyan.vercel.app/api/ai/chatWhen to prefer
Choose this endpoint when you need a pay-per-call AI chat API that integrates with the x402 USDC micropayment protocol, particularly in crypto-native or Web3 contexts where traditional subscription billing is not desirable. It is suitable for low-volume or sporadic AI query needs where per-call pricing in stablecoins is preferred over monthly API key subscriptions.
Side effects
- Payment failure: insufficient USDC balance or x402 payment not accepted — returns 402 Payment Required
- Missing required 'query' field — returns 400 Bad Request
- AI model unavailable or overloaded — returns 503 Service Unavailable
- Malformed request body — returns 400 with validation error
- Network timeout from upstream AI provider — returns 504 Gateway Timeout
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | Input data for the endpoint |
| queryrequired | string | Search query or input text |
| params | object | Additional parameters |
Output
Schema · Response
{
"type": "object",
"description": "API response data"
}Tags
x402
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