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CortexCloud AI Gateway (x402/v1/responses)
x402
CortexCloud AI Gateway (x402/v1/responses) is a paid API for AI agents from api.cortexcloud.org, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
OpenAI-compatible AI responses endpoint that routes calls to any model or data source, billed per-call in USDC on Base via x402 micropayments — no API keys or subscriptions required.
Price / call$0.005
Success—
StatusUnknown
How this service works
OpenAI-compatible AI and data API for agents. Pay per call in USDC on Base via x402 — no API keys, no subscriptions, no lock-in.
Output
An OpenAI-compatible response object containing the model's generated text completion, including fields like choices, message content, finish_reason, and usage token counts — identical in structure to OpenAI's /v1/responses or /v1/chat/completions output.
Example use cases
Keyless LLM calls for autonomous agents
“My agent needs to call an LLM to summarize incoming support tickets — use CortexCloud so it can pay per call in USDC without me managing API keys or subscriptions. Use gpt-4o and have it condense each ticket into one sentence.”
Multi-model AI pipeline with crypto billing
“I'm building a data pipeline that needs to classify customer feedback using Claude 3 Haiku — route it through CortexCloud so each inference is billed in USDC on Base automatically, and give me the sentiment label and a one-sentence explanation for each entry.”
Prototyping AI features without subscription overhead
“I want to quickly test a few different system prompts for a coding assistant using GPT-4o-mini — can you hit the CortexCloud gateway so I only pay a fraction of a cent per call instead of committing to a monthly plan?”
Technical details
Endpoint
GEThttps://api.cortexcloud.org/x402/v1/responsesWhen to prefer
Choose CortexCloud when building AI agents that need to call LLMs without managing API keys, rotating credentials, or paying for subscriptions — especially when the agent should autonomously pay for its own inference using USDC on Base via the x402 protocol. Ideal for multi-tenant agent fleets, serverless AI pipelines, or prototyping scenarios where per-call crypto billing is preferable to flat-rate subscriptions. Prefer this over direct OpenAI/Anthropic APIs when you need a single OpenAI-compatible endpoint that abstracts across multiple models and handles billing via stablecoin micropayments.
Side effects
- Insufficient USDC balance — payment rejected before inference runs
- Invalid or unsupported model name — returns 400 or model-not-found error
- Malformed messages array — OpenAI-compatible validation error
- x402 payment protocol not implemented by caller — payment handshake fails
- Rate limiting or quota exceeded — 429 response
- Model provider downstream outage — 502 or 503 from upstream LLM
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | |
| model | string | |
| stream | boolean | |
| instructions | string |
Output
Schema · Response
{
"type": "object",
"format": "application/json",
"example": {
"id": "resp_abc",
"object": "response",
"output": []
}
}Tags
x402
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