# Script Master Labs — U.S. Lobbying Disclosure API (x402)

> Script Master Labs — U.S. Lobbying Disclosure API (x402) is a paid API for AI agents from mcp-x402.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Returns U.S. federal lobbying disclosure records filtered by issue area, client, or registrant, paid per-call in USDC via x402.

## Facts

- Endpoint: GET https://mcp-x402.onrender.com/x402/lobbying
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/script-master-labs-u-s-lobbying-disclosure-api-x402-68839b2a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Vchk-tWuV7n9e61Wj2euG

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 script-master-labs-u-s-lobbying-disclosure-api-x402-68839b2a
```

Example prompt: Can you pull up U.S. federal lobbying disclosures for the healthcare issue area (HCR), specifically filings where the client is 'Pfizer', and show me up to 20 results?

## When to prefer this

Use this endpoint when you need structured U.S. federal lobbying disclosure data filtered by LDA issue area, client organization, or registrant firm, and are willing to pay $0.15 USDC per call via x402 on Base. Prefer this over scraping lobbying databases manually or using general web search when you need machine-readable lobbying records for research, compliance, or investigative purposes.

## Known failure modes

- Invalid LDA issue area code returns no results or an error
- Unknown client or registrant name returns empty result set
- Missing all filter parameters may return a large or unpaginated result set
- Payment failure via x402 (insufficient USDC balance) blocks the call
- Service unavailability on Render hosting may cause 503 errors

## How this service works

Pay-per-call crypto, RWA, federal, SEC, Section 8/HUD housing, and compliance APIs via x402. Primary: USDC on Base (eip155:8453). Also accepts Global Dollar (USDG) on Robinhood Chain (eip155:4663) via sovereign X-PAYMENT-TX. Hyphen routes only (e.g. /x402/gas-tracker, /x402/pha-lookup, /x402/sec-8k). MARKETPLACE REVIEW: use free /x402/playground/* (no key, no payment). Production /x402/* returns 402 unless paid via x402 or X-Api-Market-Key / X-API-Key from seller dashboard.

## Output

A list of U.S. federal lobbying disclosure records matching the specified filters, including details such as client name, registrant/lobbying firm, issue area codes, and filing metadata drawn from the LDA database.

## 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": {
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "issue": {
       "type": "string",
       "description": "LDA issue area code (e.g. TAX, HCR, DEF)."
      },
      "limit": {
       "type": "integer",
       "default": 10,
       "maximum": 25,
       "minimum": 1
      },
      "client": {
       "type": "string",
       "description": "Client/organization being lobbied for."
      },
      "registrant": {
       "type": "string",
       "description": "Lobbying firm name."
      }
     }
    }
   }
  },
  "output": {
   "properties": {
    "example": {}
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/script-master-labs-u-s-lobbying-disclosure-api-x402-68839b2a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-x402.onrender.com](https://www.zero.xyz/host/mcp-x402.onrender.com/llms.txt)