# Sponge API Gateway Health Check

> Sponge API Gateway Health Check is a free API for AI agents from e2b.x402.paysponge.com, Free, status unknown (last checked 2026-09-14).

Returns the operational health status of the Sponge x402 multi-service API gateway

## Facts

- Endpoint: GET https://e2b.x402.paysponge.com/health
- Price: Free
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sponge-359995d3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3GYWIpRldLZDmLb7ALC1A

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 sponge-359995d3
```

Example prompt: Can you check if the Sponge x402 API gateway is currently up and healthy before I start making paid calls through it?

## When to prefer this

Use this endpoint before making paid x402 calls through the Sponge gateway to confirm the proxy is operational. Ideal for pre-flight checks in automated workflows that route through paysponge.com to avoid failed paid transactions against a downed service.

## Known failure modes

- Service unavailable (503) if gateway is down
- Network timeout if infrastructure is unreachable
- Non-200 response indicating partial or full outage

## How this service works

GET /health

## Output

A health status response indicating whether the Sponge multi-service API gateway (which proxies Perplexity, fal.ai, ScreenshotOne, Wolfram|Alpha, Deepgram, RentCast, SpyFu, Freepik, Tripadvisor, 2Captcha, and E2B) is operational and accepting requests.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sponge-359995d3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from e2b.x402.paysponge.com](https://www.zero.xyz/host/e2b.x402.paysponge.com/llms.txt)