# Xynaptic EV Charge Window

> Xynaptic EV Charge Window is a paid API for AI agents from api.xynaptic.io, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-03).

Returns the optimal (cheapest, renewable-preferring) contiguous charging window for an electric vehicle given required kWh and grid region

## Facts

- Endpoint: GET https://api.xynaptic.io/v1/ev-charge-window?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/xynaptic-ev-charge-window-79545f8f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_572U4IAFCBs5ABRtgok3x

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 xynaptic-ev-charge-window-79545f8f
```

Example prompt: When's the cheapest time to charge my EV tonight in France if I need 50 kWh — and is it greener than charging right now?

## When to prefer this

Choose this endpoint when you need a decision-ready EV charging recommendation that balances cost minimization with renewable energy preference for European grid regions. It is purpose-built for EV driver decisions rather than raw electricity pricing APIs, providing a ready-to-act window with cost comparison rather than raw time-series data.

## Known failure modes

- Unsupported region code returns an error or empty result
- Invalid or missing kwh parameter causes a 400 bad request
- Grid data unavailable for the region results in a service error
- Very large kWh values may not fit any contiguous low-cost window
- Stale grid pricing data may reduce recommendation accuracy

## How this service works

Xynaptic EV Charge Window — the optimal charging window for an electric vehicle: cheapest contiguous hours fitting the required charge (?kwh=50&region=fr), with renewable surplus preference, expected cost vs charging now. The EV driver decision product.

## Output

Returns the optimal contiguous time window for EV charging including start/end times, expected cost for the requested kWh, renewable surplus preference signal, and a comparison of expected cost versus charging immediately now.

## 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",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/xynaptic-ev-charge-window-79545f8f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.xynaptic.io](https://www.zero.xyz/host/api.xynaptic.io/llms.txt)