# SYNTHORA Ethereum Base Fee & Burn Stats

> SYNTHORA Ethereum Base Fee & Burn Stats is a paid API for AI agents from ethereum-basefee-burn-stats.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Returns Ethereum EIP-1559 base-fee-per-gas statistics including all-time, daily, and rolling averages, min/max with block numbers, and ETH burn data sourced from ultrasound.money.

## Facts

- Endpoint: POST https://ethereum-basefee-burn-stats.hergertsynthora.com/service
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-ethereum-base-fee-burn-stats-67c013e0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TP8l1vXZR75KCkz_fkr4d

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 synthora-ethereum-base-fee-burn-stats-67c013e0 -d '<json body>'
```

Example prompt: Pull the latest Ethereum base fee stats from ultrasound.money — I want to see the all-time average, daily average, rolling average, and the min/max base fees with their block numbers so I can figure out the best time to submit my transactions.

## When to prefer this

Choose this endpoint when you need structured, multi-window Ethereum base fee statistics (all-time, daily, rolling averages plus min/max with block context) in a single call, especially for gas-timing agents or execution planners that need to compare current fees against historical benchmarks. Prefer it over raw RPC node calls when you want pre-aggregated burn and fee stats without building your own data pipeline against ultrasound.money.

## Known failure modes

- Payment failure if x402 USDC payment is not properly submitted
- Upstream ultrasound.money API unavailability causing stale or missing data
- Malformed request payload resulting in an error response
- Network timeout if the upstream data source is slow to respond
- Invalid or missing API keys causing authentication failure

## How this service works

Returns Ethereum EIP-1559 base-fee-per-gas statistics (all-time, daily and rolling averages, min/max with block numbers, and the burn barrier) from ultrasound.money. Feeds autonomous gas-timing agents and agent-to-agent execution planners tracking ETH issuance/burn dynamics and picking low-base-fee windows. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

## Output

A JSON object containing a timestamp, the niche identifier, and a result object with Ethereum EIP-1559 base-fee-per-gas statistics including all-time average, daily average, rolling averages, minimum and maximum fees with associated block numbers, and the burn barrier — sourced from ultrasound.money.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "keys": {
   "type": "string",
   "description": "keys"
  },
  "caller": {
   "type": "string",
   "description": "caller"
  },
  "payload": {
   "type": "string",
   "description": "payload"
  },
  "provides": {
   "type": "string",
   "description": "provides"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "ethereum-basefee-burn-stats",
  "result": {
   "timestamp": "2026-07-11T14:35:47Z"
  },
  "provenance": {
   "url": "https://ultrasound.money/api/v2/fees/base-fee-per-gas-stats",
   "source": "Ethereum Base Fee & Burn Stats"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-ethereum-base-fee-burn-stats-67c013e0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ethereum-basefee-burn-stats.hergertsynthora.com](https://www.zero.xyz/host/ethereum-basefee-burn-stats.hergertsynthora.com/llms.txt)