# Kronos Gas Decision

> Kronos Gas Decision is a paid API for AI agents from api.nexismvp.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns a real-time gas price signal (low/normal/high) for Base mainnet, indicating whether current transaction costs are cheap relative to recent averages.

## Facts

- Endpoint: GET https://api.nexismvp.com/market/gas-decision
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kronos-gas-decision-b5dc129e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_g2ajP86xxpx2K3zV3UcsH

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 kronos-gas-decision-b5dc129e
```

Example prompt: Is now a good time to submit a transaction on Base mainnet, or is gas currently running high compared to recent averages?

## When to prefer this

Use this endpoint when you need a quick, pre-computed categorical gas signal for Base mainnet without having to calculate moving averages yourself. Ideal for agents that gate transaction execution on cost conditions, or dashboards that surface gas timing recommendations. Prefer this over raw RPC calls when you want a human-readable low/normal/high classification rather than raw gwei values.

## Known failure modes

- Network or RPC connectivity issues may prevent fetching the live base fee, resulting in an error response
- If the Base mainnet RPC is degraded, stale or unavailable data may be returned
- Upstream Base node outage could cause the endpoint to be temporarily unavailable

## How this service works

Real-time Base mainnet gas price signal (low/normal/high vs. recent average) — a recommendation on whether now is a cheap time to transact. Experimental/informational only — not financial advice.

## Output

Returns a JSON object with the current Base mainnet base fee in gwei, the recent average base fee in gwei, the ratio of current to average, and a categorical decision string of 'low', 'normal', or 'high' indicating relative cost, along with the chain identifier.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "current_base_fee_gwei",
      "decision",
      "chain"
     ],
     "properties": {
      "chain": {
       "type": "string"
      },
      "decision": {
       "enum": [
        "low",
        "normal",
        "high"
       ],
       "type": "string"
      },
      "ratio_to_recent_avg": {
       "type": "number"
      },
      "current_base_fee_gwei": {
       "type": "number"
      },
      "recent_avg_base_fee_gwei": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kronos-gas-decision-b5dc129e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.nexismvp.com](https://www.zero.xyz/host/api.nexismvp.com/llms.txt)