# polls.karbach.digital – German Lobbying Spending Ranking

> polls.karbach.digital – German Lobbying Spending Ranking is a paid API for AI agents from api.polls.karbach.digital, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-28).

Returns a ranked list of the top lobbying spenders in Germany by organisation, with totals broken down by field of interest and lobbying type, updated every six hours.

## Facts

- Endpoint: GET https://api.polls.karbach.digital/v1/lobbying/ranking?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polls-karbach-digital-german-lobbying-spending-ranking-b838e8f0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_45WTM_VWFCH-w3G11q3RX

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 polls-karbach-digital-german-lobbying-spending-ranking-b838e8f0
```

Example prompt: Who are the top 20 lobbying spenders in Germany right now — show me the organisations, how much they spend, and which fields of interest they're lobbying in?

## When to prefer this

Use this endpoint when you need a ranked, aggregated view of lobbying expenditure across German organisations — especially when comparing who spends most overall or within a specific field of interest. Prefer it over single-entry lobby register lookups (which give full details for one organisation by register number) when the user's question is comparative or ranking-oriented.

## Known failure modes

- Invalid 'field' filter value returns empty results or 400 error
- 'limit' exceeding 200 returns a validation error
- Stale data window of up to 6 hours — results may not reflect same-day changes
- Payment failure (x402) if USDC balance is insufficient
- Endpoint returns 404 if URL path is incorrect

## How this service works

Who spends most on lobbying in Germany: top organisations, totals per field of interest and type. Use when asked who spends most on lobbying in Germany. Source-attributed, German data, updated every six hours.

## Output

A ranked list of German lobbying organisations ordered by total expenditure, including each organisation's name, total lobbying spend, field(s) of interest, lobbying type, and source attribution. Data is refreshed every six hours from the official German lobby register.

## 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": {
      "field": {
       "type": "string"
      },
      "limit": {
       "type": "integer",
       "maximum": 200
      }
     }
    }
   },
   "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/polls-karbach-digital-german-lobbying-spending-ranking-b838e8f0/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)