# EU Gas Storage Levels API (GIE AGSI+)

> EU Gas Storage Levels API (GIE AGSI+) is a paid API for AI agents from api.polls.karbach.digital, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).

Returns current and historical EU and per-country natural gas storage data including fill level, stored TWh, injection/withdrawal rates, and comparisons to last year and the five-year average.

## Facts

- Endpoint: GET https://api.polls.karbach.digital/v1/energy/gas-storage?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/eu-gas-storage-levels-api-gie-agsi-1aa86489
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wuf9o9cFNsH8jiY_1G7UY

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 eu-gas-storage-levels-api-gie-agsi-1aa86489
```

Example prompt: How full is EU gas storage right now, and how does it compare to last year and the five-year average? Show me the daily trend for the past 90 days.

## When to prefer this

Choose this endpoint when you need authoritative, source-attributed EU or per-country natural gas storage statistics including fill levels, injection/withdrawal rates, and historical comparisons. It is specifically useful for energy market analysis, policy monitoring, or answering questions about whether European gas storage is adequate relative to seasonal norms. Prefer it over generic energy data APIs when you need GIE AGSI+ data with freshness guarantees and structured comparative metrics.

## Known failure modes

- 503 Service Unavailable — returned (without charge) when the underlying GIE AGSI+ data is older than 50 hours, indicating a data freshness issue
- Invalid country code — unsupported or misspelled two-letter country code may return an error or empty results
- Days parameter out of range — values below 1 or above 730 will be rejected by schema validation
- No data for requested country — not all EU countries have gas storage facilities; requesting one without storage may yield no results

## How this service works

Gas storage in the EU and every EU country with storage (GIE AGSI+): fill level, stored TWh, injection and withdrawal, change in 7 days, versus last year and the five-year average, daily series. Use when asked how full German or European gas storage is, whether it is filling or emptying, or how it compares with last year and the five-year average. Source-attributed. Refused (503, not charged) if data is older than 50 hours.

## Output

Returns a structured dataset with daily time series of gas storage metrics for the requested country or EU aggregate, including fill level percentage, stored TWh, injection and withdrawal volumes, 7-day change, year-over-year delta, and deviation from the five-year average. Data is source-attributed to GIE AGSI+ and refused with a 503 if the underlying data is older than 50 hours.

## 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": {
      "days": {
       "type": "integer",
       "default": 90,
       "maximum": 730,
       "minimum": 1
      },
      "country": {
       "type": "string",
       "description": "two-letter code like DE, or EU"
      }
     }
    }
   },
   "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/eu-gas-storage-levels-api-gie-agsi-1aa86489/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.polls.karbach.digital](https://www.zero.xyz/host/api.polls.karbach.digital/llms.txt)