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x402.freeq.one LLM Chat
x402
x402.freeq.one LLM Chat is a paid API for AI agents from x402.freeq.one, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Chat with a language model via an OpenAI-compatible /v1/chat/completions interface supporting 50+ models, paid per-call in USDC on Base via x402
Price / call$0.002
Success—
StatusUnknown
How this service works
LLM Chat: Chat with a language model. OpenAI-compatible /v1/chat/completions interface. Supports 50+ models. Free models (auto, eco, premium) are $0 — paid models (gpt-5.2, claude-opus-5, deepseek-v4-pro, ...) are charged at cost. See /tools/llm_chat/models for the full model list and rates. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/llm_chat.
Output
Returns an OpenAI-compatible chat completion object containing the assistant's message content, finish reason, model used, and token usage statistics (prompt tokens, completion tokens, total tokens).
Example use cases
Free-tier LLM call from agent
“Ask the auto model (free tier) to write a one-paragraph product description for a new ergonomic standing desk called 'StandEasy Pro'.”
Premium model reasoning task
“Use claude-opus-5 to analyze the pros and cons of switching our company's database from PostgreSQL to MongoDB and give me a structured recommendation.”
Cost-efficient batch summarization
“Use the eco model to summarize this 500-word support ticket into a 2-sentence summary I can paste into our CRM: 'Customer reports that the mobile app crashes on login after the latest update on iOS 17...'”
Technical details
Endpoint
POSThttps://x402.freeq.one/tools/llm_chatWhen to prefer
Choose this endpoint when you need OpenAI-compatible LLM access with per-call micropayment billing in USDC rather than a monthly subscription, especially if you want to dynamically switch between 50+ models (free eco/auto tiers or paid premium models like GPT-5 or Claude Opus) within the same API interface. Ideal for autonomous agents that need to pay programmatically on Base without managing API keys for multiple providers.
Side effects
- Insufficient USDC balance on Base wallet — payment rejected by x402 gateway
- Unsupported model name — returns 400 or model-not-found error
- Malformed messages array — returns 422 validation error
- Rate limit exceeded for the selected model tier
- Network timeout for long-running premium model completions
- Model temporarily unavailable — returns 503 or fallback error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| model | string | Model ID. Examples: auto/eco/premium (free, $0.002), openai/gpt-5.2, anthropic/claude-opus-5, google/gemini-3.1-pro, deepseek/deepseek-v4-pro. Short names accepted (gpt-5.2, claude-opus-5). See /tools for full list. |
| messages | array | Conversation messages array |
| max_tokens | integer | Maximum tokens to generate (default 1024, max 4096). Lower values reduce cost for paid models. |
| temperature | number | Sampling temperature 0-2 (default 0.7) |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {}
}
}Tags
x402
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