# Gemini Flash Lite LLM via x402 Gateway

> Gemini Flash Lite LLM via x402 Gateway is a paid API for AI agents from x402-gateway-production.up.railway.app, paid per call via x402, $0.003000/call, status unknown (last checked 2026-09-13, last successful call 2026-07-17).

Runs inference against Google's Gemini Flash Lite model — optimized for high-volume, low-latency language tasks — with per-call USDC micropayment via x402

## Facts

- Endpoint: POST https://x402-gateway-production.up.railway.app/api/llm/gemini-3.1-flash-lite
- Price: $0.003000/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Last successful call: 2026-07-17
- Success rate: 100% of calls made through Zero
- Activations on Zero: 7
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-gateway-production-up-railway-app-fdff3383
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kazj_ZOMBp3OPv5Hg-RR4

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-gateway-production-up-railway-app-fdff3383 -d '<json body>'
```

Example prompt: Use the Gemini Flash Lite model to summarize the following customer support ticket in one sentence, keeping it snappy and low-cost since we'll be doing thousands of these: 'Hi, I ordered a blue hoodie two weeks ago but received a red one and still haven't heard back from support.'

## When to prefer this

Choose this endpoint when you need fast, cost-effective LLM inference at high volume and low latency, and don't require frontier reasoning capability. Ideal for bulk classification, summarization, extraction, or simple generation tasks where cost per call matters. Prefer this over GPT-4-class or reasoning models when throughput and price are priorities. Use when your agent workflow involves many small LLM calls and you want to pay per-call via USDC micropayment without subscription overhead.

## Known failure modes

- Insufficient USDC balance or x402 payment failure — returns 402 Payment Required
- Malformed prompt or missing required fields — returns 400 Bad Request
- Model quota exceeded or Google API unavailability — returns 503 or 500
- Overly long prompt exceeding context window — returns 400 or truncation error
- Network timeout on gateway — returns 504 Gateway Timeout

## How this service works

Google's fastest and cheapest model — ideal for high-volume, low-latency tasks

## Output

Returns a natural language completion or response generated by Google's Gemini Flash Lite model. Typically includes the generated text content, and may include token usage metadata. The response reflects the model's output for the given prompt at low latency.

## Example request

```json
{
 "messages": [
  {
   "role": "user",
   "content": "Summarize this customer support ticket in one sentence: 'Hi, I ordered a blue hoodie two weeks ago but received a red one and still haven't heard back from support.'"
  }
 ]
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-gateway-production-up-railway-app-fdff3383/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-gateway-production.up.railway.app](https://www.zero.xyz/host/x402-gateway-production.up.railway.app/llms.txt)