Regulatory Filings and Policy Page Monitoring

The scenario

You work in a regulated industry - fintech, health, energy, crypto - and a small set of agency pages directly shapes your compliance burden. Treasury guidance, FDA labeling rules, FERC docket pages, FINRA notices. When one of those pages changes, your legal team needs to know within a day, not the next quarterly review.

For consulting firms and policy researchers, the same pattern is "tell me when this set of rules or filings moves."

The problem

Agency websites publish on their own schedule with no API. Some send email digests, but those are noisy and often miss the specific rule you care about. Internal "regulatory watch" assignments rarely outlast the analyst who set them up. A SaaS solution exists in this space but is priced for enterprise compliance teams, not for the 30-page list you actually need to watch.

How Verid solves it

Two complementary monitors per page work well:

1. Full-page hash - Verid hashes the entire rendered page. Any byte-level change fires the alert. It's cheap, certain, and noisy.

2. Prompt-based summary - Verid runs an LLM extraction with a prompt like "what is the effective date of the most recent revision on this page?" and returns a structured value. The diff fires only when the meaningful field changes, suppressing nav, footer, and visitor-counter noise.

Most compliance teams want the noisy full-page hash as a backup signal and the prompt-based summary as the day-to-day alert.

Build the monitor

Extraction config - Full-page hash

{ "method": "full_page" }

This produces a page_hash field that changes whenever any byte of the rendered HTML changes.

Extraction config - Prompt summary

{
  "method": "prompt",
  "prompt": "From this regulatory page, extract: (1) the effective date of the most recent revision (ISO date), (2) the title of the rule, (3) a one-sentence summary of what changed.",
  "schema": {
    "effective_date": "string",
    "rule_title": "string",
    "summary": "string"
  }
}

Predicate

For full-page hash, fire on any change:

{ "type": "any_field_changes" }

For prompt summary, fire only when the effective date changes - that's the actual signal:

{ "type": "field_changes", "field": "effective_date" }

Create the monitor

curl -X POST https://api.verid.dev/v1/monitors \
  -H "Authorization: Bearer vrd_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Treasury - Guidance on X",
    "url": "https://home.treasury.gov/news/guidance/x",
    "schedule_interval_seconds": 86400,
    "extract_config": {
      "method": "prompt",
      "prompt": "From this regulatory page, extract: (1) the effective date of the most recent revision (ISO date), (2) the title of the rule, (3) a one-sentence summary of what changed.",
      "schema": {
        "effective_date": "string",
        "rule_title": "string",
        "summary": "string"
      }
    },
    "diff_predicate": { "type": "field_changes", "field": "effective_date" },
    "deliveries": [
      { "type": "email", "to": "legal@example.com" }
    ]
  }'

SDK:

import { VeridClient } from '@verid.dev/sdk';

const client = new VeridClient({ apiKey: 'vrd_your_api_key' });

await client.monitors.create({
  name: 'Treasury - Guidance on X',
  url: 'https://home.treasury.gov/news/guidance/x',
  schedule_interval_seconds: 86400,
  extract_config: {
    method: 'prompt',
    prompt:
      'From this regulatory page, extract: (1) the effective date of the most recent revision (ISO date), (2) the title of the rule, (3) a one-sentence summary of what changed.',
    schema: {
      effective_date: 'string',
      rule_title: 'string',
      summary: 'string',
    },
  },
  diff_predicate: { type: 'field_changes', field: 'effective_date' },
  deliveries: [{ type: 'email', to: 'legal@example.com' }],
});

What the webhook delivers

{
  "id": "del_01H...",
  "fired_at": "2026-05-08T10:00:00Z",
  "diff": {
    "fields_changed": ["effective_date", "summary"],
    "before": {
      "effective_date": "2026-01-15",
      "rule_title": "Guidance on X for Q1 2026",
      "summary": "Original publication of the Q1 guidance."
    },
    "after": {
      "effective_date": "2026-05-08",
      "rule_title": "Revised Guidance on X - Q2 2026",
      "summary": "Updates the Q1 guidance with revised thresholds for reporting and a new effective date."
    }
  }
}

The webhook's summary field is what your compliance team scans first.

Caveats & tips

• Daily interval is plenty. Regulatory pages don't change frequently. A daily check keeps cost down and is well under what these workflows need.
• Page rewrites trigger false-positives in full-page hash. A site nav redesign hashes the whole page differently even when no rule text changed. The prompt-based extractor immunizes you against this.
• Archive every fired delivery. Treat each webhook as a record of a change. Storing the before/after summary inside your own compliance database creates an audit trail your auditors will appreciate.
• Prompt extraction costs per cache-miss. A page that doesn't change all month only costs one LLM call (subsequent runs hit the cache). Pages that change daily cost daily.

Related use cases

For broader policy drift, see terms of service & privacy policy drift. For government tenders, see government contract & tender postings. For domain ownership / WHOIS changes, see WHOIS & domain ownership changes.