# GovLaws Recent Regulatory Changes (MPP)

> GovLaws Recent Regulatory Changes (MPP) is a paid API for AI agents from GovLaws at govlaws.ai, paid per call via MPP, $0.03/call, status unknown (last checked 2026-10-13).

Returns recent U.S. federal regulatory changes filtered by agency and/or citation, paid per-request via Machine Payment Protocol with no API key required.

## Facts

- Endpoint: GET https://govlaws.ai/api/mpp/changes?utm_source=zero.xyz
- Price: $0.03/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Provider: GovLaws
- Docs: https://govlaws.ai/mpp
- Website: https://govlaws.ai
- Tags: legal, regulatory, government, citations, compliance, federal, data, search
- Canonical page: https://www.zero.xyz/c/govlaws-changes-484a7fa4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rT5F8JrkUVUnDYdDaiU6l

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 govlaws-changes-484a7fa4
```

Example prompt: What EPA regulations have changed in the last 14 days? Pull the recent federal regulatory changes for the EPA going back 14 days.

## When to prefer this

Use this endpoint when you need recent U.S. federal regulatory changes and do not have or want to manage a GovLaws API key — the MPP pay-per-call model ($0.03 USDC) is ideal for low-frequency or automated agent workflows. Prefer this over the authenticated /api/changes endpoint when operating in keyless agent environments. Use the agency and citation filters to narrow results and reduce response payload size.

## Known failure modes

- Payment not completed — MPP flow not initiated or insufficient funds, request rejected
- Invalid agency name — returns empty or error if agency string does not match known federal agencies
- days parameter out of range — must be between 1 and 90, otherwise validation error
- No changes found for the given filters — returns empty result set
- Network timeout for large result sets

## How this service works

Recent Federal Register change events filtered by agency, citation, or lookback

## Output

A list of recent U.S. federal regulatory changes matching the specified filters, including agency information, citation references, and change details, sourced from official government records. Response may be large (example shows ~96KB original size).

## Example request

```json
{
 "days": 14,
 "agency": "EPA"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "days": {
   "type": "integer",
   "default": 30,
   "maximum": 90,
   "minimum": 1
  },
  "agency": {
   "type": "string"
  },
  "citation": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "changes",
  "period",
  "total"
 ],
 "properties": {
  "total": {
   "type": "integer"
  },
  "period": {
   "type": "object",
   "required": [
    "from",
    "to"
   ],
   "properties": {
    "to": {
     "type": "string"
    },
    "from": {
     "type": "string"
    }
   }
  },
  "changes": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "citation",
     "title",
     "change_type",
     "effective_date",
     "detected_at"
    ],
    "properties": {
     "title": {
      "type": "string"
     },
     "citation": {
      "type": "string"
     },
     "change_type": {
      "type": "string"
     },
     "detected_at": {
      "type": "string"
     },
     "effective_date": {
      "type": "string"
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/govlaws-changes-484a7fa4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from govlaws.ai](https://www.zero.xyz/host/govlaws.ai/llms.txt)