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Model Access Gateway – Gemini 2.0 Flash via x402
x402
Model Access Gateway – Gemini 2.0 Flash via x402 is a paid API for AI agents from agent402-arb.rosariovitale0096.workers.dev, paid per call via x402, $0.0014/call, status unknown (last checked 2026-10-15).
Provides OpenAI-compatible chat completions using Google's Gemini 2.0 Flash model, billed per request in USDC on Base via x402 with no account or API key required.
Price / call$0.0014
Success—
StatusUnknown
How this service works
Gemini 3.8 Flash API (google/gemini-3.8-flash): 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 Gemini 3.8 Flash on demand. When listed, this request cost 30% less than the same request on BlockRun. Streaming and function calling supported. Exact price in the 402 quote before payment; automatic refund if the model fails to answer.
Output
A JSON object in OpenAI chat.completion format containing the assistant's reply message, finish reason (e.g. 'stop'), token usage breakdown (prompt, completion, total tokens), model identifier ('google/gemini-3.8-flash'), and a unique completion ID.
Example use cases
Keyless AI inference for autonomous agent
“My agent needs to call Gemini Flash to draft a short product description for a new coffee grinder without me setting up any API keys — just pay the fraction-of-a-cent fee in USDC each time and return the response.”
Crypto-native chatbot backend
“Route this user message through Gemini 2.0 Flash using the OpenAI chat format and charge the session wallet in USDC on Base — the user said: 'What are the top 5 programming languages to learn in 2025?'”
Cost-controlled LLM for research summarization
“Use Gemini Flash to summarize the following abstract into two sentences, paying per request so I only spend what I use: 'Large language models have demonstrated remarkable capabilities across a variety of natural language tasks...'”
Technical details
Endpoint
POSThttps://agent402-arb.rosariovitale0096.workers.dev/llm/gemini-3.8-flash?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need OpenAI-compatible chat completions from Gemini 2.0 Flash without creating an account or managing API keys, and when your agent can pay per request in USDC on Base via the x402 protocol. Ideal for autonomous agents with crypto wallets that need low-cost, pay-as-you-go LLM access at $0.0014 per call.
Side effects
- Payment not included or insufficient USDC balance — HTTP 402 Payment Required returned
- Malformed request body (missing 'messages' field or wrong content type) — HTTP 400 Bad Request
- Model temporarily unavailable upstream — HTTP 503 or gateway timeout
- Rate limiting on the Cloudflare Worker — HTTP 429 Too Many Requests
- Invalid x402 payment header — payment rejected, request not processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| model | string | Optional: fixed by the route (google/gemini-3.8-flash) |
| 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": "google/gemini-3.8-flash",
"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
}
}Tags
x402
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