Model Access Gateway – Gemini 2.0 Flash Chat Completions (x402)

x402

Model Access Gateway – Gemini 2.0 Flash Chat Completions (x402) is a paid API for AI agents from modelaccessgateway.com, paid per call via x402, $0.0014/call, status unknown (last checked 2026-10-17).

OpenAI-compatible chat completions via Google Gemini 2.0 Flash, paid per call in USDC on Base using the x402 protocol — no account or API key required.

Price / call$0.0014

Seller volume →—

Success—

StatusUnknown

How this service works

LLM inference API: OpenAI-compatible chat completions for 136 AI models (Claude, GPT, Gemini, Grok, DeepSeek, Qwen, Kimi, GLM), paid per call in USDC on Base with x402. No account, no API key, automatic refund if the model fails.

Output

Returns an OpenAI-compatible chat.completion JSON object containing the assistant's message content, finish reason (e.g. 'stop'), token usage breakdown (prompt, completion, total), model name, completion ID, and created timestamp. If streaming is enabled, server-sent events are returned token by token after the x402 payment is processed. If the model fails, an automatic USDC refund is issued.

Example use cases

Anonymous AI chat for privacy-focused app

“I need to call a fast Gemini model from my app without registering for a Google API key — just send the user's message 'What are the top 5 programming languages in 2025?' as a user turn and pay per call in USDC.”

Structured JSON output extraction

“Ask Gemini Flash to extract the company name, date, and total amount from this invoice text, and return the result as JSON — set response_format to json and keep max_tokens at 512.”

Streaming real-time AI assistant response

“Stream a Gemini Flash reply to the user's question 'Explain quantum entanglement simply' so I can display tokens as they arrive — enable streaming and use a temperature of 0.7.”

Technical details

Endpoint

POSThttps://modelaccessgateway.com/llm/gemini-3.8-flash?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need fast, cheap Gemini Flash inference without any Google account, API key, or subscription — ideal for autonomous agents that hold USDC on Base and want per-call micropayment billing via x402. Prefer it over standard Google AI Studio or OpenAI when you want anonymous, accountless access, crypto-native payment, and OpenAI SDK compatibility. The automatic refund on model failure makes it low-risk for automated pipelines.

Side effects

Insufficient USDC balance or x402 payment failure — call rejected before inference runs
Model unavailable or overloaded — automatic refund issued, no content returned
Invalid messages array (empty or missing role field) — 400 validation error
max_tokens exceeds 16384 — rejected with schema validation error
Temperature out of range (0–2) — parameter rejected
Malformed response_format object — may cause generation error or unexpected output

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
  }
}

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