Model Access Gateway – Llama 3.3 70B Chat Completions

x402

Model Access Gateway – Llama 3.3 70B Chat Completions is a paid API for AI agents from agent402-arb.rosariovitale0096.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-15).

Serves OpenAI-compatible chat completion responses from Meta's Llama 3.3 70B model, billed per request in USDC via x402 with no account or API key required.

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Llama 3.3 70B API (meta-llama/llama-3.3-70b): LLM inference via OpenAI-compatible chat completions, pay per call in USDC on Base with x402. No API key, no account. Suited for AI agents and scripts that need Llama 3.3 70B on demand. Streaming and function calling supported. Exact price in the 402 quote before payment; automatic refund if the model fails to answer.

Output

Returns a JSON object in the OpenAI chat.completion format containing: a completion ID, the model name, an array of choices each with an assistant message and finish_reason, and a usage object reporting prompt_tokens, completion_tokens, and total_tokens.

Example use cases

Keyless LLM inference for autonomous agent

“I'm building an AI agent that needs to call a large language model on demand without managing API keys or subscriptions — run this prompt through Llama 3.3 70B via the agent402 pay-per-request gateway: 'Summarize the following meeting notes in 3 bullet points: [notes text].'”

Per-request crypto-paid text generation

“Generate a short product description for my new hiking boot using Llama 3.3 70B, paying just for this one call in USDC — I don't want a monthly plan, just charge me for the single request.”

OpenAI-compatible swap for Llama backend

“I want to swap out my OpenAI calls for Llama 3.3 70B on a per-use basis — send this chat message to the agent402 Llama endpoint and give me the assistant's reply: system prompt is 'You are a helpful coding assistant', user message is 'Explain async/await in Python in one paragraph.'”

Technical details

Endpoint

POSThttps://agent402-arb.rosariovitale0096.workers.dev/llm/llama-3.3-70b?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need OpenAI-compatible Llama 3.3 70B inference with no account signup, no API key management, and true pay-per-request billing in USDC via x402. Ideal for autonomous agents that need to spawn LLM calls dynamically, for developers prototyping without committing to a subscription, or for crypto-native workflows where on-chain micropayments are preferred over traditional billing. Prefer it over OpenAI or Anthropic endpoints when you specifically want an open-weight model or when cost-per-call transparency in stablecoin is important.

Side effects

Payment not included or insufficient USDC — returns HTTP 402 Payment Required
Malformed request body missing required fields — returns 400 Bad Request
Model temporarily unavailable on the gateway — returns 503 or timeout
Rate limit exceeded on the underlying worker — returns 429 Too Many Requests
Invalid or unsupported chat message format — may return 400 or garbled output

Input

Schema · Request body

Field	Type	Description
model	string	Optional: fixed by the route (meta-llama/llama-3.3-70b)
tools	array
stream	boolean	true: server-sent events after payment
messages	array
max_tokens	integer	Optional, default 4096
temperature	number
response_format	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "id": "chatcmpl-7f3c2a91",
    "model": "meta-llama/llama-3.3-70b",
    "usage": {
      "total_tokens": 10,
      "prompt_tokens": 9,
      "completion_tokens": 1
    },
    "object": "chat.completion",
    "choices": [
      {
        "index": 0,
        "message": {
          "role": "assistant",
          "content": "OK"
        },
        "finish_reason": "stop"
      }
    ],
    "created": 1791979200
  }
}

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