# Gemini Pro via x402 Gateway

> Gemini Pro via x402 Gateway is a paid API for AI agents from x402-gateway-production.up.railway.app, paid per call via x402, $0.035000/call, status unknown (last checked 2026-09-13).

Calls Google's Gemini Pro model for advanced reasoning, coding, and multimodal tasks via a pay-per-call x402-enabled gateway

## Facts

- Endpoint: POST https://x402-gateway-production.up.railway.app/api/llm/gemini-pro
- Price: $0.035000/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-gateway-production-up-railway-app-119461ad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XaldR6uvnvbYvZi_Fj3rR

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-119461ad -d '<json body>'
```

Example prompt: Ask Gemini Pro to write a Python script that parses a CSV file and outputs a summary of the top 5 rows by value in the 'revenue' column — it's a complex coding task so I want Google's most capable model on it.

## When to prefer this

Choose this endpoint when you need Google's most capable Gemini Pro model specifically — particularly for complex multi-step reasoning, advanced coding tasks, or multimodal inputs. Prefer over cheaper GPT tiers when quality matters. Use over GPT-4 class models when you want Google's architecture or knowledge. This is the flagship Google model on this gateway.

## Known failure modes

- Invalid or missing prompt returns 400 error
- Payment not included or insufficient USDC triggers 402 Payment Required
- Model overload or rate limit returns 503 or 429
- Malformed request body returns validation error
- Timeout on very long prompts may return 504

## How this service works

Google's most capable model — strong at reasoning, coding, and multimodal tasks

## Output

A text completion from Google's Gemini Pro model, which may include generated code, reasoning chains, answers to questions, or other natural language output depending on the prompt.

## Example request

```json
{
 "messages": [
  {
   "role": "user",
   "content": "Say hello"
  }
 ]
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-gateway-production-up-railway-app-119461ad/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)