# x402 Trust & Discovery API — Onchain Gas Data

> x402 Trust & Discovery API — Onchain Gas Data is a paid API for AI agents from gkyf2bs3b4p35hwwg5zzsnejeu.srv.us, paid per call via x402, $0.001/call, status down (last checked 2026-10-01).

Returns keyless onchain gas data from Base for use in pre-purchase endpoint safety and credential compatibility checks

## Facts

- Endpoint: GET https://gkyf2bs3b4p35hwwg5zzsnejeu.srv.us/v1/onchain/gas?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-trust-discovery-api-onchain-gas-data-51557880
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fant8a5_hg6v299NgihZF

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-trust-discovery-api-onchain-gas-data-51557880
```

Example prompt: Can you fetch the current onchain gas data from Base so I know the network fees right now?

## When to prefer this

Use this endpoint when you need keyless, credential-free access to current Base network gas data as part of an x402 pre-purchase safety check or cost estimation workflow. Prefer this over direct RPC calls when you want a simple REST interface without managing a Web3 provider connection, or when operating within the x402 Trust & Discovery API ecosystem for consistent tooling.

## Known failure modes

- Missing or malformed 'properties' query parameter returns an error response
- Base network RPC unavailability causes timeout or 5xx error
- Rate limiting at $0.001/call may throttle high-frequency polling
- Empty JSON example in response schema suggests inconsistent response structure documentation
- Service hosted on dynamic subdomain (srv.us) may have uptime variability

## How this service works

Independent pre-purchase safety and reputation checks for x402 and MPP endpoints, plus keyless onchain data on Base. Accepts BOTH EIP-3009 and Circle Gateway credentials — only 141 of 788 Base-payable resources do, and a single-credential buyer is locked out of 53.8% of this market on one rail or 28.3% on the other. GET /v1/guard?url=&credential= answers whether the credential you carry can pay a given endpoint at all, before you try. Searching this market for "is this API endpoint a scam" returns registries and explorers but no dedicated service; that gap is what /v1/guard fills, inspecting an endpoint WITHOUT paying it and returning a go / test-with-minimum / do-not-pay verdict backed by onchain settlement history.

## Output

Returns a JSON object containing current onchain gas data from the Base network, including metrics relevant to transaction cost estimation and x402 payment feasibility, without requiring wallet credentials.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-trust-discovery-api-onchain-gas-data-51557880/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gkyf2bs3b4p35hwwg5zzsnejeu.srv.us](https://www.zero.xyz/host/gkyf2bs3b4p35hwwg5zzsnejeu.srv.us/llms.txt)