Crime & Justice URL Classification API Data Requirements

You need to reliably detect Crime & Justice content at the URL/domain level so you can block categories for brand safety, enforce network filtering policies, or enrich signups with context for review. By the end of this guide, you’ll have a working POST request to Klazify’s categorize endpoint, a production-ready Python snippet that makes a yes/no decision for Crime & Justice handling, and clear operational guidance for batching, caching, and unknown domains.

Why Klazify is ideal for Crime & Justice classification

Crime & Justice content signals can be nuanced and dispersed across government portals, court websites, legal news hubs, and advocacy groups. Klazify’s domain intelligence API helps engineers and product teams address this with a single REST integration:

• Accurate website categorization using AI: Klazify analyzes on-page content (not only metadata) so you can detect Crime & Justice context even on pages that aren’t obvious from their domain alone, such as deep news sections or subpages about criminal procedure.
• Global coverage: Many Crime & Justice resources are multilingual—national justice ministries, court listings, and NGOs. Klazify evaluates websites in multiple languages, supporting global filtering and enrichment pipelines.
• Real-time classification: Crime reporting and legal updates change quickly. Klazify analyzes current content, helping you base decisions on what is on the page now rather than stale, static lists.
• Industry-level categories with IAB mapping: You get hierarchical, standards-aligned categories (IAB taxonomy), making it straightforward to align Crime & Justice detection to your ad tech or brand safety policy.
• Simple API integration: A single POST to the categorize endpoint delivers categories, company context, logo URLs, and more—ideal for plugging into proxies, CDPs, DMPs, and enrichment jobs.
• Compliance and filtering: Whether you are blocking certain Crime & Justice content for minors, allowing official justice portals on a whitelist, or segmenting inventory for brand safety, Klazify’s granular categories and confidence scores support deterministic policies.

Explore the platform and create a free account at klazify.com. When you’re ready to implement, read the Documentation and MCP change notes.

Scenario: block, allow, and enrich Crime & Justice URLs

Consider three common workflows:

• Brand safety: Block ads from running on pages categorized under your internal Crime & Justice segments, or only permit ads on official government justice pages.
• Network filtering: In a school or corporate environment, restrict access to sensitive Crime content categories while allowing legal resources and official portals.
• Signup enrichment: If a user signs up from a domain categorized under legal services or justice organizations, flag for CRM enrichment or route to a relevant onboarding path.

All three use the same building blocks: call categorize, extract categories with confidence, optionally use IAB mappings, and cache the result per domain or URL for performance.

Classify a Crime & Justice URL with a single POST

Use the main endpoint to classify a specific URL or its root domain. Below is a copy-pasteable curl that sends a plausible Crime & Justice public URL and returns categories and related data. Replace YOUR_API_KEY with your token.

curl -X POST "https://www.klazify.com/api/categorize" \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"url":"https://www.justice.gov/"}'

Note: You can post any URL or domain that appears in your pipeline, such as government justice departments, court information hubs, or legal news pages.

Understanding the response shape with an official sample

Below is the official example response format. Field names and structure match what your code will parse. Use this to wire your parser and tests; your live category names will reflect the specific site you submit.

{
"domain": {
"categories": [
{
"confidence": 0.92,
"name": "/Computers & Electronics/Consumer Electronics",
"IAB-632-596": "Consumer Electronics/Technology & Computing/Consumer Electronics"
},
{
"confidence": 0.89,
"name": "/Internet & Telecom/Mobile & Wireless/Mobile Phones"
}
],
"social_media": null,
"logo_url": "https://klazify.s3.amazonaws.com/2110787991611585019600ed5fb1d1300.04730104.png"
},
"success": true,
"objects": {
"company": {
"url": "https://www.apple.com/",
"name": "Apple",
"city": "Cupertino",
"stateCode": "CA",
"countryCode": "US",
"employeesRange": "100K+",
"revenue": 274515000000,
"raised": null,
"tags": [
"E-commerce",
"Consumer Electronics",
"Mobile",
"B2C"
],
"tech": [
"omniture_adobe_analytics",
"atlassian_confluence",
"successfactors",
"apache_apex",
"talend",
"oracle_peoplesoft",
"salesforce",
"stripe",
"dell_boomi_atomsphere",
"gigya",
"sage_50cloud",
"quickbooks",
"webmethods",
"apache_tomcat",
"alteryx",
"tibco_rendezvous",
"atlassian_jira",
"..."
]
}
},
"domain_registration_data": {
"domain_age_date": "1987-02-19",
"domain_age_days_ago": "13026",
"domain_expiration_date": "2030-02-20",
"domain_expiration_days_left": "123"
},
"similar_domains": [
"bestbuy.com",
"icloud.com",
"microsoft.com",
"macrumors.com",
"google.com",
"samsung.com",
"twitter.com",
"hp.com",
"bhphotovideo.com",
"dell.com"
]
}

How to use these fields for Crime & Justice decisions:

• domain.categories: Your primary decision field. Each category includes a name and confidence, and may include an IAB mapping code/value. Your policy engine should compare returned categories to your internal Crime & Justice allow/block sets.
• objects.company: Optional enrichment for CRM or admin review. If present, you can tag accounts by company name, location, or tags to route to the right team.
• domain.logo_url: Useful for admin UI or moderation tooling when reviewing flagged domains.
• domain_registration_data: Operators sometimes weigh domain tenure when deciding to trust or fast-track review of official sites.
• similar_domains: Seed follow-up classification jobs by expanding coverage to nearby domains discovered here.
• success: Always check this boolean before using the rest of the structure in your pipeline.

From categories to an actionable Crime & Justice decision

You control what “Crime & Justice” means in your system. In practice, teams maintain a mapping file or database table with two sets:

• Allowlist categories: Official justice portals, legal information resources, or categories you consider safe for brand adjacency.
• Blocklist categories: Crime reporting or other categories your brand safety policy excludes.

Because category names vary by site and hierarchy level, keep this mapping in configuration rather than hardcoding it. In production, you will typically treat any exact match or parent path match in domain.categories[*].name (or the corresponding IAB mapping value) as a positive signal.

Python example: classify and map to yes/no

The snippet below calls the same endpoint, checks success, extracts categories, and maps them against your internal policy. Replace YOUR_API_KEY and supply your own category sets via environment or configuration.

import os
import json
import time
import requests

API_URL = "https://www.klazify.com/api/categorize"
API_KEY = os.getenv("KLAZIFY_API_KEY", "YOUR_API_KEY")

# Maintain your policy externally (e.g., db table, config file, feature flag).
# Here we accept two environment variables with comma-separated strings.
ALLOWLIST = set(filter(None, os.getenv("CJ_ALLOWLIST", "").split(",")))
BLOCKLIST = set(filter(None, os.getenv("CJ_BLOCKLIST", "").split(",")))

# Simple per-process cache by domain; in production, use Redis or your CDN cache.
CACHE = {}

def categorize_url(url, max_retries=3, backoff=1.5):
if url in CACHE:
return CACHE[url]

payload = {"url": url}
headers = {
"Authorization": f"Bearer {API_KEY}",
"Content-Type": "application/json"
}

for attempt in range(max_retries):
resp = requests.post(API_URL, headers=headers, data=json.dumps(payload), timeout=15)
if resp.status_code == 200:
data = resp.json()
CACHE[url] = data
return data
# Basic backoff on transient errors
time.sleep(backoff ** (attempt + 1))

# Last attempt result or None
try:
return resp.json()
except Exception:
return None

def extract_category_strings(data):
"""
Return a list of strings we can match against the policy:
- category 'name' values
- any available IAB mapping values
"""
out = []
if not data or not data.get("success"):
return out

domain = data.get("domain", {})
for cat in domain.get("categories", []) or []:
# Primary name
name = cat.get("name")
if name:
out.append(name)

# Include any IAB mapping values present in the object
for k, v in cat.items():
if k.startswith("IAB-") and isinstance(v, str):
out.append(v)
return out

def decide_crime_justice(url):
"""
Returns a dict with:
decision: 'allow' | 'block' | 'review'
categories: list of matched categories (for audit)
raw: the full response (for logging / caching)
"""
data = categorize_url(url)
cats = extract_category_strings(data)

matched_block = sorted(ALLOWLIST.intersection(cats)) # track matches
matched_allow = sorted(ALLOWLIST.intersection(cats))

# If any category is in BLOCKLIST, block
if any(cat in BLOCKLIST for cat in cats):
return {"decision": "block", "categories": [c for c in cats if c in BLOCKLIST], "raw": data}

# If any category is in ALLOWLIST, allow
if any(cat in ALLOWLIST for cat in cats):
return {"decision": "allow", "categories": [c for c in cats if c in ALLOWLIST], "raw": data}

# No match: send to manual review or fallback policy
return {"decision": "review", "categories": cats, "raw": data}

if __name__ == "__main__":
test_url = "https://www.justice.gov/"
result = decide_crime_justice(test_url)
print(json.dumps({
"url": test_url,
"decision": result["decision"],
"matched_categories": result["categories"]
}, indent=2))

How to supply your mapping:

• Set CJ_ALLOWLIST and CJ_BLOCKLIST with the exact category strings you use internally. You can include the category path from domain.categories[*].name and any IAB mapping values discovered in your sample responses.
• When a URL returns multiple categories, the example blocks first (if any blocklist match), then allows, otherwise routes to review.

What to store and how to act on it

In your production pipeline, persist the following per URL or normalized domain to avoid redundant classification calls and to support audits:

• URL and normalized registrable domain (use your standard normalization to map subpages to the same key if you apply domain-level policies).
• Full domain.categories array including confidence and any IAB mapping pairs for deterministic matching.
• Decision outcome: allow, block, or review, and the matched category strings that triggered it.
• Timestamp and job identifier for reproducibility.
• Optionally: objects.company, domain.logo_url, and domain_registration_data for reviewer context.

For brand safety on ad placement, run the decision function per page impression URL if possible. For network filtering, cache at the domain level with a shorter TTL for news and a longer TTL for official portals. For signups, store the enrichment alongside the account record for downstream scoring rules.

Operational details: batching, caching, unknowns, taxonomy mapping

Caching strategy

Categorization results are stable enough to cache per domain with a TTL suited to your use case. Suggested approach:

• Domain-level cache key for most decisions (e.g., example.gov).
• URL-level cache for sites with diverse sections where page content varies widely (e.g., news sites).
• Use an in-memory LRU for hot paths and a distributed cache like Redis for long TTLs, with a scheduled refresh process.

Handling unknown or new domains

When the API returns success: false or an empty categories list, default to a safe fallback:

• For brand safety: treat as review or block, depending on your risk posture.
• For network filtering: assign a temporary block or restricted profile until a recrawl is completed.
• Log the URL/domain to an “unclassified” queue and retry on a backoff schedule to capture newly published content.

Batching and throughput

For high-volume feeds (e.g., proxies, ad crawlers), submit requests concurrently from worker pools and deduplicate identical domains within a short window before sending. If you maintain a URL discovery job (e.g., sitemap or referrer scans), funnel new hosts through a priority queue so critical destinations are classified first.

If you have questions on practical rates or concurrency patterns, review the Documentation and plan your worker counts accordingly.

Mapping to your taxonomy

Klazify returns a hierarchical category name per item in domain.categories and may include an IAB mapping (e.g., a key beginning with IAB- and a descriptive value). Many teams:

• Store the raw name and any IAB mapping values as canonical strings.
• Maintain a simple lookup table that maps those strings to internal policy labels like ALLOW_CJ, BLOCK_CJ, or REVIEW.
• Apply parent-path logic in your lookup for generalized matches (store the exact strings you expect to match—keep logic in data, not code).

Decisioning tips specific to Crime & Justice

• Prefer block-first policies for ad placement when any matched category indicates Crime content you do not want to sponsor. Then allow specific government or legal education categories that you trust.
• Maintain a separate whitelist of official portals and court websites by domain for deterministic allows when categorization is ambiguous.
• Use confidence to break ties. When multiple categories return, select the one with the highest confidence to drive your final policy if your mappings diverge.
• For international sites, check IAB mapping values to maintain a consistent policy across languages and localized category paths.

Example: plug categories into three workflows

End-to-end checklist for deployment

• Authentication: Store the API key securely; pass as Bearer in the Authorization header.
• Normalization: Decide URL vs domain-level policy, normalize consistently.
• Resilience: Add retries with exponential backoff and circuit breaking around the API call.
• Caching: Cache positive results; schedule refreshes for dynamic domains.
• Policy mapping: Keep allow/block sets in a managed datastore; log unknowns for curation.
• Observability: Log success, latency, and decision outcomes; sample raw payloads for auditing.

Try Klazify with your Crime & Justice URLs

Get started in minutes: create a free account, obtain your API key, and post a few Crime & Justice URLs from your backlog. Use the example code to drive allow/block decisions and store categories for audit. Visit Register to create your account. You can also explore capabilities at klazify.com.

FAQ

• Does Klazify classify full URLs or just domains?
  The categorize endpoint accepts a URL or a domain. If your policy depends on page-level content, send full URLs; otherwise, normalize to domain-level for broader caching.
• How should I handle multiple categories for one URL?
  Evaluate all returned categories. If any matches your Crime block set, block; otherwise allow on a whitelist match. Use confidence to prioritize when needed.
• What if the response has no categories?
  Treat it as review or follow your safest fallback. Queue the URL for a retry and log it for manual curation if it appears frequently.
• Can I rely on the IAB mapping for policy?
  Yes. Store both the category name and any IAB mapping values and match against either. This helps standardize policies across languages and sites.
• How do I scale this for high throughput?
  Batch work across a worker pool, deduplicate domains, and use layered caching (memory + distributed). Review the Documentation as you size concurrency and retries.

Classify your first Crime & Justice URLs today and wire the results into your filters, ad safety checks, and CRM enrichment. Sign up at Register and plug the categorize endpoint into your pipeline.