# Unphurl

> Domain intelligence API for AI agents and developers

One URL in. Structured signals out. Your AI agent decides what to do with them.

## What it is

Unphurl analyses URLs across 7 dimensions and returns structured, scored signals. Not binary verdicts. Built for autonomous AI agents, security bots, and developers who need to understand what's behind any URL before acting on it.

## Key capabilities

- 7 analysis dimensions: redirects, brand impersonation, domain intelligence (RDAP), SSL/TLS, parked detection, URL structure, DNS enrichment
- Brand impersonation detection against 150+ brands (Levenshtein + homoglyph analysis)
- 23 configurable scoring weights with custom profiles per use case
- Score breakdown transparency (see exactly which signals contributed)
- Batch processing up to 500 URLs with async polling and webhooks
- Usage analytics per account (free rate, pipeline spend, score distribution)

## Three interfaces

- REST API: https://api.unphurl.com/v1 (bearer auth)
- CLI: npx unphurl (colour-coded output, batch processing, account management)
- MCP server: @unphurl/mcp-server (13 tools for Claude Code, Cursor, Windsurf)

## Pricing

No subscriptions. Credits never expire. Most lookups are free.

- Starter: $9 for 100 pipeline checks ($0.090/check)
- Standard: $39 for 500 pipeline checks ($0.078/check)
- Pro: $99 for 2,000 pipeline checks ($0.050/check)
- Scale: $399 for 10,000 pipeline checks ($0.040/check)

3 free pipeline checks on signup. No credit card required.

## Three-gate billing

1. Known domain (Tranco Top 100K)? Free, instant, score 0.
2. Previously analysed (cached)? Free, instant, scored with your weights.
3. New domain? Full 7-dimension pipeline. 1 credit. Results cached for all future lookups.

Typical free rate exceeds 90%.

## How it differs from alternatives

Unlike Google Safe Browsing and VirusTotal (binary blocklist verdicts), Unphurl returns structured signals with configurable scoring. Unlike DomainTools and SecurityTrails (enterprise subscriptions from $50-99/month), Unphurl starts at $9 with no subscription. Unphurl is the only product that covers both security (phishing, brand impersonation) and data quality (dead domains, parked sites, missing MX) in a single API.

## 27 use cases

**AI-Native:**
- How do I automatically check links in my email throughout the day?
- How do I check every link in a document before sending it to a client?
- How do I check candidate portfolio and company URLs before recruiting outreach?
- How do I protect my OpenClaw agent from following dangerous links?

**Security & IT:**
- How do I protect my Slack channels from dangerous links?
- How do I protect my Discord server from dangerous links?
- How do I protect my Telegram group from dangerous links?
- How do I check links in emails before they reach my team?
- How does my AI agent verify URLs it receives from other AI agents?

**Marketing & Sales:**
- How do I clean my prospect list before sending cold emails?
- How do I validate domains before lead gen outreach?
- How do I check every link in my newsletter before sending?
- How do I verify that ad and affiliate links are legitimate?
- How do I clean dead and stale domains from my CRM?

**Business Operations:**
- How do I verify website URLs submitted during account signup?
- How do I vet partner and vendor websites during due diligence?
- How do I detect early warning signs from vendor domain changes?
- How do I verify applicant business websites during underwriting?
- How do I monitor competitor domain health as a business signal?

**Developers & Engineering:**
- How do I filter out bad URLs before my crawler follows them?
- How do I audit my website's backlinks and outbound links?
- How do I check for dead links on my website?
- How do I validate product feed URLs before ingesting them?
- How do I monitor affiliate sites for compliance and brand misuse?

**Content & Research:**
- How do I clean stale listings from my business directory?
- How do I find dead citations and broken links in research archives?
- How do I verify that property listing source URLs are still live?

## Links

- Docs: https://unphurl.com/docs
- Use cases: https://unphurl.com/use-cases
- Pricing: https://unphurl.com/pricing
- FAQ: https://unphurl.com/faq
- MCP setup: https://unphurl.com/docs#mcp-quick-start
- CLI package: https://www.npmjs.com/package/unphurl
- MCP package: https://www.npmjs.com/package/@unphurl/mcp-server
- Extended info: https://unphurl.com/llms-full.txt