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x402engine — Cohere Command-A LLM via HTTP 402 Micropayment
x402
x402engine — Cohere Command-A LLM via HTTP 402 Micropayment is a paid API for AI agents from x402engine.app, paid per call via x402, $0.018586/call, status unknown (last checked 2026-10-12).
Runs a chat completion request through Cohere's Command-A model, paid per-call via USDC micropayment on Base, MegaETH, or Solana.
Price / call$0.018586
Success—
StatusUnknown
How this service works
125 production APIs behind HTTP 402 micropayments. 87 LLMs, Kling V3 and Hailuo video generation, image generation, code execution, travel search, web scraping, TTS, and transaction simulation. Pay with USDC on Base, USDm on MegaETH, or USDC on Solana.
Output
Returns an OpenAI-compatible JSON object containing the model name ('cohere/command-a'), a choices array with the assistant message (role, content, finish_reason), and a top-level content string. If streaming is enabled, returns SSE chunks in OpenAI-compatible format.
Example use cases
Agentic task reasoning with Command-A
“Send this to Cohere Command-A: system says 'You are an expert software architect' and the user asks 'Design a microservices architecture for a ride-sharing app — list services, their responsibilities, and communication patterns.' Use up to 1024 tokens and keep temperature at 0.5.”
Streaming customer support response
“Use Command-A to generate a streaming response for this support scenario: system is 'You are a friendly customer support agent for a SaaS billing product' and the user says 'My invoice is wrong — I was charged twice for March.' Stream the reply back and cap it at 300 tokens.”
Tool-calling with pay-per-use LLM
“Call Command-A with a tool-use message: system prompt is 'You are a travel planning assistant', user message is 'Find me flights from New York to Tokyo next month', and include a search_flights tool definition. Use temperature 0 and max 512 tokens.”
Technical details
Endpoint
POSThttps://x402engine.app/api/llm/command-a?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need Cohere's Command-A specifically — known for strong enterprise document grounding, tool use, and RAG-style tasks — and want to avoid committing to a Cohere subscription or API key. Ideal for agents that need pay-per-call billing in USDC with no monthly overhead. Prefer over generic OpenAI-compatible endpoints when Command-A's enterprise reasoning or multilingual strengths are a better fit than GPT or Claude alternatives also available on x402engine.
Side effects
- Payment not settled — 402 response if USDC/USDm balance is insufficient
- Invalid messages array — 400 if messages is empty or missing required role field
- Exceeded max_tokens budget — response truncated or error if token limit is invalid
- Unsupported parameter for Command-A — top_k, seed, or stop may be ignored or rejected if not supported per /docs/llm-capabilities.md
- Model unavailable — 503 if Command-A inference endpoint is down
- Stream timeout — SSE connection dropped if network or server latency is too high
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"model": "cohere/command-a",
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": "Hello!"
},
"finish_reason": "stop"
}
],
"content": "Hello!"
}
}Tags
x402
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