# Kronos Preflight Check

> Kronos Preflight Check is a paid API for AI agents from crypto.forgemesh.io, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns a go/no-go allowed flag with market state, cooldown status, and warnings for a given crypto symbol before calling the costlier decision endpoint.

## Facts

- Endpoint: GET https://crypto.forgemesh.io/api/kronos/preflight
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kronos-preflight-check-373fee88
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_F26UOcxvipbIAoTVf_8YZ

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-preflight-check-373fee88
```

Example prompt: Before running a full Kronos decision for BTC, do a preflight check to see if the market state is open and there's no cooldown blocking the call right now.

## When to prefer this

Use this endpoint before every call to /kronos/decision to avoid wasting money on decision calls during blocked market conditions, cooldown periods, or unsupported symbols. It costs significantly less ($0.05) than the full decision endpoint, making it an economical gate. Prefer this when building automated trading pipelines where you want to skip decision calls during after-hours, cooldown windows, or anomalous market states.

## Known failure modes

- Missing or invalid symbol parameter returns an error or empty result
- Symbol not supported by Forgemesh Kronos returns a rejection or unknown state
- Service unavailable or rate-limited returns a non-200 status
- Stale market data may cause inaccurate market_state assessment
- Payment not completed (x402 flow incomplete) results in 402 response

## How this service works

Returns a go/no-go allowed flag with market_state, cooldown status, and warnings for one symbol — call it before /kronos/decision to skip a costlier decision call during blocked conditions.

## Output

Returns a JSON object containing: an 'allowed' boolean (go/no-go flag), a 'market_state' string describing current market conditions, cooldown status, and any warnings that explain why a decision call might be blocked or inadvisable for the given symbol.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "symbol": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "symbol": {
       "type": "string"
      },
      "allowed": {
       "type": "boolean"
      },
      "market_state": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "symbol": "BTC/USD",
  "allowed": true,
  "warnings": [],
  "in_cooldown": false,
  "market_state": "NORMAL"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kronos-preflight-check-373fee88/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from crypto.forgemesh.io](https://www.zero.xyz/host/crypto.forgemesh.io/llms.txt)