# KeeperHub Gas Refuel Workflow

> KeeperHub Gas Refuel Workflow is a paid API for AI agents from app.keeperhub.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Automatically tops up an Ethereum wallet with ETH when its balance drops below a specified threshold by triggering a gas refuel workflow execution.

## Facts

- Endpoint: POST https://app.keeperhub.com/api/mcp/workflows/gas-refuel/call?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/keeperhub-gas-refuel-workflow-f316066a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__BoZIxvOJoFSpRnqhvUnL

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 keeperhub-gas-refuel-workflow-f316066a -d '<json body>'
```

Example prompt: Can you trigger a gas refuel for wallet 0xABC123...def so that if its ETH balance drops below 0.05 ETH, it gets topped up with 0.1 ETH?

## When to prefer this

Choose this endpoint when you need to programmatically trigger an automated ETH gas refuel for a specific wallet address based on a balance threshold, especially within a larger agent workflow that monitors wallet health. It is purpose-built for gas automation rather than general ETH transfers or wallet monitoring.

## Known failure modes

- Invalid wallet address format returns an error
- Threshold or topupAmount values missing or zero may cause validation failure
- Insufficient funds in the paying account to cover gas refuel amount
- Network congestion may delay execution but status still returns as 'running'
- Malformed request body returns a 400-level error

## How this service works

Build powerful blockchain workflow automations with a visual, node-based editor. Built with Next.js and React Flow.

## Output

Returns a JSON object with a 'status' field (e.g. 'running') confirming the workflow has been triggered, and an 'executionId' string (e.g. 'exec_abc123') that can be used to track the refuel workflow execution.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "threshold",
  "topupAmount",
  "walletAddress"
 ],
 "properties": {
  "threshold": {
   "type": "number",
   "description": "ETH balance below which to refuel"
  },
  "topupAmount": {
   "type": "number",
   "description": "ETH to send"
  },
  "walletAddress": {
   "type": "string",
   "description": "wallet to refuel"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "status": "running",
 "executionId": "exec_abc123"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/keeperhub-gas-refuel-workflow-f316066a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from app.keeperhub.com](https://www.zero.xyz/host/app.keeperhub.com/llms.txt)