# x402GAL Water Footprint Offset

> x402GAL Water Footprint Offset is a paid API for AI agents from x402gal.vercel.app, paid per call via x402, $0.000022/call, status down (last checked 2026-09-14).

Offsets water footprint on a per-call basis, settling in USDC and retiring HydroCoin on the XRPL ledger

## Facts

- Endpoint: POST https://x402gal.vercel.app/api/ai/chat
- Price: $0.000022/call
- Payment: x402
- Status: down
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402gal-f30f2007
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GQMrrsFL9w2OwOQPL0mgF

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 x402gal-f30f2007 -d '<json body>'
```

Example prompt: I want to offset my water footprint right now — use x402GAL to retire a HydroCoin on XRPL and settle it in USDC so I have a blockchain record of the offset.

## When to prefer this

Choose this endpoint when you need a per-call, micro-transaction water footprint offset settled in USDC with on-chain proof via HydroCoin retirement on the XRP Ledger. Prefer this over generic carbon offset APIs when water specifically is the environmental metric, and when blockchain-verifiable retirement records are required.

## Known failure modes

- Insufficient USDC balance — payment fails, offset not processed
- XRPL network congestion causes HydroCoin retirement delay or failure
- Invalid or missing chat message body returns 400 error
- x402 payment protocol handshake failure
- HydroCoin contract unavailable on XRPL — retirement cannot be completed

## How this service works

x402GAL - per-call water-footprint offset, USDC settled, HydroCoin retired on XRPL

## Output

Returns a confirmation of the water footprint offset, including a HydroCoin retirement record on the XRP Ledger and the USDC settlement details for the per-call transaction.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402gal-f30f2007/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402gal.vercel.app](https://www.zero.xyz/host/x402gal.vercel.app/llms.txt)