# Gkd Bayern — Wrapped API

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>
> Locus runs on multiple environments -- make sure every URL you call matches your expected environment.
> | Environment | Landing | API | Docs |
> |---|---|---|---|
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> | Beta | beta.paywithlocus.com | api.beta.paywithlocus.com | docs.paywithlocus.com |
> | Stage | stage.paywithlocus.com | api.stage.paywithlocus.com | docs.paywithlocus.com |
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> If the API URL above doesn't match your expected environment, re-fetch this file from the correct domain.

> Monitor groundwater levels and access historical time series data from Munich's official water monitoring stations to track water stress conditions across the city's drinking water supply regions. Get real-time station information and current water levels to stay informed about local water availability and supply status.

**Category:** Government & Public Data | **Website:** [www.gkd.bayern.de/de/grundwasser/oberesstockwerk/inn/vagen-mangfall-r-35-21947/gesamtzeitraum](https://www.gkd.bayern.de/de/grundwasser/oberesstockwerk/inn/vagen-mangfall-r-35-21947/gesamtzeitraum) | **Docs:** [parse.bot/marketplace/0d8a8cbc-9459-4c65-bec9-4423b2f7e70d/gkd-bayern-de-api](https://parse.bot/marketplace/0d8a8cbc-9459-4c65-bec9-4423b2f7e70d/gkd-bayern-de-api)

Pay-per-use API proxy for Locus Pro. Each call burns credits from your workspace balance.

## Access

**Base URL:** `https://api.beta.paywithlocus.com/api/wrapped/credits/gkd-bayern/`
**Auth:** `Authorization: Bearer <LOCUS_CREDITS_SECRET_KEY>` (an `lcr_` secret key or a scoped `lcac_` agent credential)
**Required header:** `Idempotency-Key: <fresh UUID per call>`. A retry with the same key replays the stored result without a new charge.
**Response:** the provider response after any endpoint-specific normalization. `X-Locus-Credits-Charged` carries the charge and `X-Locus-Credits-Balance` the remaining balance. Insufficient credits return `402` before the provider is called.
**Pricing:** estimated costs below are USD. Locus debits the credit equivalent at your workspace rate.

Full call contract: https://docs.paywithlocus.com/api-reference/introduction

> Using a Pay With Locus wallet key (`claw_` prefix)? Wallet routes are documented separately: https://docs.paywithlocus.com/wrapped-apis/for-agents

## Endpoints

### Get current level

Retrieves the most recent groundwater level measurement for a station including measurement timestamp and ground elevation. One request per station.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `station_id` | string | Yes | GKD Bayern station number (e.g. 21947, 25707, 25668). |

```bash
curl -X POST https://api.beta.paywithlocus.com/api/wrapped/credits/gkd-bayern/get-current-level \
  -H "Authorization: Bearer $LOCUS_CREDITS_SECRET_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{"station_id":"<string>"}'
```

### Get station info

Retrieves station metadata including location, operator, aquifer type, ground elevation, and historical water level statistics (highest/mean/lowest ever recorded). One request per station.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `station_id` | string | Yes | GKD Bayern station number (e.g. 21947, 25707, 25668). |

```bash
curl -X POST https://api.beta.paywithlocus.com/api/wrapped/credits/gkd-bayern/get-station-info \
  -H "Authorization: Bearer $LOCUS_CREDITS_SECRET_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{"station_id":"<string>"}'
```

### Get time series

Retrieves historical groundwater level time series as daily measurements. Supports two periods: 'recent' (last 12 months) or 'full' (entire observation history spanning decades). Results are ordered newest-first and auto-iterated by the SDK.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `limit` | integer | No | Maximum number of measurements to return. When omitted, all available measurements are returned. |
| `period` | string | No | Time range to retrieve. |
| `station_id` | string | Yes | GKD Bayern station number (e.g. 21947, 25707, 25668). |

```bash
curl -X POST https://api.beta.paywithlocus.com/api/wrapped/credits/gkd-bayern/get-time-series \
  -H "Authorization: Bearer $LOCUS_CREDITS_SECRET_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{"limit":"<integer>","period":"<string>","station_id":"<string>"}'
```

## Next steps

- [All wrapped API providers](https://beta.paywithlocus.com/wapi/index.md): pick another provider.
- [Find and call tools](https://beta.paywithlocus.com/agent/tools.md): price ceilings, async results, and errors.
- [Credits and billing](https://beta.paywithlocus.com/agent/billing.md): what a call costs and how to add credits.
- [Agent docs index](https://beta.paywithlocus.com/agent/index.md): every Locus agent page.