services How do you evaluate 500+ domains quickly? I built an API for bulk authority scores

[antiochIst]

Hey NamePros community!

I've been buying and evaluating expired domains, and I kept running into the same frustrating problem: evaluating hundreds of domains takes forever.

You're checking authority scores, registration dates, whether there was an actual business on the domain - across multiple tools, manually, one by one. A 500-domain auction list could take 40+ hours to properly research.

So I built a solution, and I'm here to get feedback from experienced domain flippers.

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What I Built​

Website Launches Domain Intelligence API - Bulk domain evaluation with:

• Domain Authority Score (0-100) - Proprietary scoring based on link analysis
• Exact Registration Date & Age - Precise domain age data
• Launch Detection - Was there an actual business/site on it?
• Industry Classification - 3-level taxonomy (350+ categories)
• Batch Processing - Evaluate up to 50,000 domains in a single request
• Historical Authority Tracking - See authority changes over time
• CLI Tool - Quick lookups directly from terminal

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Real-World Example: Evaluating Expired Domains​

Let's say you have 1,000 expired .com domains from an auction to evaluate before bidding closes.

The Manual Way (Current Process)​

• Check each domain on 3-4 different tools
• 5 minutes per domain minimum
• Total: 41+ hours of work
• Miss the auction deadline

With Bulk API​

pip install webl
webl batch expired_domains.txt --csv > evaluated.csv

Or via API:

curl -X POST https://websitelaunches.com/api/v1/domain/batch \
  -H "X-API-Key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"domains": ["domain1.com", "domain2.com", ...]}'

Results in seconds (typically < 10 seconds for 1,000 domains):

• Domain authority for all 1,000 domains
• Age and registration dates
• Industry classifications
• Launch detection status
• Export to CSV for sorting/filtering

Time saved: 41 hours → 10 seconds

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Use Cases for Domain Investors​

1. Expired Domain Auctions

• Quickly evaluate hundreds of domains before auctions close
• Filter out spam/low-authority domains automatically
• Identify hidden gems with high authority

2. Portfolio Management

• Evaluate your entire portfolio (100-10,000+ domains)
• Decide which domains to renew vs. drop
• Track authority changes over time
• Make data-driven decisions, not guesses

3. Domain Prospecting

• Find valuable domains in specific industries
• Research what competitors are buying
• Discover trending niches

4. Domain Appraisal Services

• Add objective authority scores to appraisals
• Show clients historical authority trends
• Justify pricing with data

5. Penalty Detection

• Track authority changes over time (Growth+ tiers)
• Identify domains that lost authority (possible Google penalties)
• Avoid buying penalized domains at auction
• See historical authority from 2018 to present

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Example Output​

Let me show you real data - here's namepros.com:

Domain:           namepros.com
Authority:        78/100
Age:              22.3 years
Registration:     2003-04-15
Launch Detected:  Yes (2003-06-01)
Industry:         Business > Domain Services > Domain Forums
Authority of 78 is excellent - correlates well with NamePros being a high-traffic, established domain marketplace.

Historical Authority Tracking (Growth+ Tiers)​

Want to see if a domain lost authority over time? Add ?history=true:

webl github.com --history

Returns historical data:

Historical Authority:

Date      Authority  Release ID
2018-01   75         CC-MAIN-2018-05
2019-01   78         CC-MAIN-2019-04
2020-01   80         CC-MAIN-2020-05
2025-10   85         CC-MAIN-2025-40

Authority Change: +10 (+13.3% since 2018)
Why this matters for domain flippers:

• Spot domains that LOST authority (penalties/deindexing)
• See growth trends (rising domains = valuable)
• Avoid expired domains that tanked before expiration
• Verify recovery from past penalties

Example: Domain has authority of 60 today, but was 85 in 2020 → RED FLAG. Likely penalized. Avoid at auction.

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Pricing​

Free Tier (No Signup Needed!)

• 3,000 requests/month
• No credit card required
• Works immediately
• Perfect for: Testing the system, smaller batches

Try it now:

pip install webl
webl github.com

Growth Tier - $99/month

• 250,000 requests/month
• Historical authority tracking
• Batch processing (up to 10,000/request)
• Best for: Active domain flippers

Pro Tier - $299/month

• 1,000,000 requests/month
• Everything in Growth
• Best for: High-volume flippers, brokers

Business Tier - $499/month

• 5,000,000 requests/month
• Batch up to 50,000/request
• Custom rate limits
• Best for: Domain marketplaces, agencies

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How Authority is Calculated​

• Our domain authority score (0-100) is calculated using a proprietary algorithm that analyzes:
• Link patterns and relationships
• Domain age and history
• Web presence indicators
• Industry signals

The scores are validated to correlate with industry-standard metrics, providing reliable domain quality assessment for purchasing
decision

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Special Offer for NamePros Community​

For the first 20 members who reply:

I'll run a FREE portfolio analysis on up to 100 of your domains. Reply "interested" and I'll DM you.

You'll get:

• Full authority scores for all domains
• Age and registration dates
• Industry classifications
• Top 10 domains ranked by authority
• Recommendations on which to keep/sell

Also: Drop any single domain in the comments and I'll post the full authority report publicly so everyone can see the data.

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Technical Details​

API Response Example:

{
  "ok": true,
  "data": {
    "domain": "example.com",
    "domain_authority": 67,
    "domain_age": 12.4,
    "domain_age_date": "2012-08-15",
    "launch_detected": true,
    "launch_date": "2013-01-10",
    "category": "Technology",
    "subcategory": "SaaS",
    "subcategory2": "Marketing Tools"
  }
}

CLI Tool:

# Single domain
webl namepros.com

# JSON output for scripting
webl namepros.com --json | jq

# CSV for spreadsheets
webl namepros.com --csv

# Batch processing
webl batch domains.txt --csv > results.csv

# Historical authority tracking (Growth+ tiers)
webl namepros.com --history

Batch API Response:

{
  "ok": true,
  "data": {
    "results": [ /* array of domain data */ ],
    "count": 1000,
    "processed_in_ms": 8542  // < 10 seconds for 1,000 domains
  }
}

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Links​

Website: https://websitelaunches.com
API Docs: https://websitelaunches.com/docs
CLI Tool: https://github.com/WebsiteLaunches/webl-cli
Install: pip install webl
Get API Key: https://websitelaunches.com/api/dashboard

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Questions for the Community​

I'd love to hear from experienced domain flippers:

1. What metrics do you currently use when evaluating domains for purchase?
2. Would bulk authority scoring be useful in your workflow?
3. What other data points would make this more valuable for domain investors?

Happy to answer any questions and looking forward to your feedback!

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About me: I'm Taylor, founder of Website Launches. I've been tracking newly launched websites and domain data for 2+ years. Built this API because I needed it myself, and realized domain investors have the same problem.

Drop a domain below for a free evaluation!

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Full transparency: I'm the creator of this tool. The CLI is open source (MIT). The API has a free tier for testing. I'm here to provide value to the NamePros community and gather feedback to make this better for domain investors.

 

[MASUD RANA]

interested