API Changelog

v2.5.0 Jan 6, 2026 feature

Multi-currency Support

Added GBP and JPY currency support for domain valuation
New `currency` parameter on `/v1/value` endpoint (default: USD)
Valuation responses now include `currency` field

v2.4.2 Dec 19, 2025 improvement

Mobile Experience Improvements

Fixed mobile navigation UI issues
Added floating navigation menu for API docs on mobile
Improved terminal component responsive behavior

v2.4.1 Dec 12, 2025 security

Security Hardening

Enhanced input validation across all endpoints
Added rate limiting protection for authentication endpoints
Improved XSS protection on user-generated content
Security headers now enforced on all responses

v2.4.0 Dec 1, 2025 feature

Domain Graph API

New `/v1/graph` endpoint for mapping domain relationships
Discover domains sharing infrastructure (nameservers, mail servers, IPs)
Visualize domain ownership clusters
Added `depth` parameter to control relationship traversal (1-3)

v2.3.0 Nov 18, 2025 feature

Reverse Lookup APIs

New `/v1/reverse/mx` endpoint - find domains by mail server
New `/v1/reverse/ip` endpoint - find domains hosted on an IP
Both endpoints support pagination via `offset` and `limit` params
Results include confidence scores and last-seen timestamps

v2.2.1 Nov 8, 2025 fix

RDAP Reliability Improvements

Fixed intermittent timeouts with certain ccTLD registries
Improved retry logic for rate-limited RDAP servers
Better handling of malformed RDAP responses
Cache now respects registry-specific TTL hints

v2.2.0 Oct 28, 2025 feature

Email Authentication API

New `/v1/email-auth` endpoint for email security auditing
Validates SPF, DKIM, and DMARC configurations
Returns actionable recommendations for misconfigured records
Includes deliverability score based on authentication setup

v2.1.0 Oct 15, 2025 breaking Breaking

Response Format Standardization

BREAKING: Error responses now use consistent `error.code` and `error.message` format
BREAKING: Removed deprecated `err` field from all responses
BREAKING: HTTP 429 responses now include `retry_after` in seconds (was milliseconds)
Added `error.suggestion` field with actionable guidance
All timestamps now in ISO 8601 format

Migration Example

// Before (v2.0.x)
{ "err": "rate limited", "retry": 5000 }

// After (v2.1.0+)
{
  "error": {
    "code": "RATE_LIMITED",
    "message": "Too many requests",
    "suggestion": "Reduce request frequency or upgrade plan",
    "retry_after": 5
  }
}

v2.0.3 Oct 2, 2025 fix

Bulk Endpoint Stability

Fixed race condition in bulk status checks causing duplicate results
Improved memory efficiency for large bulk requests
Added request deduplication for identical domains in same batch

v2.0.2 Sep 22, 2025 improvement

Performance Optimizations

Reduced average response time by 35% through edge caching improvements
Optimized DNS resolution with connection pooling
Bootstrap data now refreshed in background without blocking requests

v2.0.1 Sep 10, 2025 fix

IDN Domain Handling

Fixed punycode conversion for internationalized domain names
Improved validation for mixed-script domain labels
Added support for new gTLDs with non-ASCII characters

v2.0.0 Sep 1, 2025 breaking Breaking

API v2 Launch

BREAKING: All endpoints moved from `/api/` to `/v1/` prefix
BREAKING: Authentication now requires API key in `X-API-Key` header (was query param)
BREAKING: Rate limits now per-key instead of per-IP for authenticated requests
New domain availability engine with 40% faster lookups
Added support for 400+ new TLDs
Introduced credit-based pricing model
New dashboard for API key management

Migration Example

// Before (v1.x)
GET /api/check?domain=example.com&key=xxx

// After (v2.0+)
GET /v1/status?name=example&tlds=com
Headers: X-API-Key: xxx

v1.5.0 Aug 18, 2025 feature

Tech Stack Detection

New `/v1/tech` endpoint for website technology detection
Identifies CDN providers, CMS platforms, frameworks, and analytics tools
Detection based on HTTP headers, HTML patterns, and JavaScript fingerprints

v1.4.0 Aug 5, 2025 feature

Domain Health Checker

New `/v1/health` endpoint for comprehensive domain health checks
Validates DNS configuration, SSL certificates, and security headers
Added `/v1/health/quick` for lightweight checks (DNS only)
Health scores now included in domain profile responses

v1.3.2 Jul 28, 2025 fix

Certificate Transparency Improvements

Fixed pagination for domains with 1000+ certificates
Added wildcard certificate detection
Improved certificate parsing for non-standard issuers

v1.3.1 Jul 20, 2025 deprecation

Deprecation Notice

Deprecated: `/api/*` endpoints will be removed in v2.0 (September 2025)
Deprecated: Query parameter authentication (`?key=xxx`) will be removed in v2.0
Added deprecation warnings in response headers for affected endpoints
Migration guide available at /docs#migration-v2

v1.3.0 Jul 12, 2025 feature

Typosquatting Detection

New `/v1/typos` endpoint for brand protection
Detects keyboard-based typos, homoglyph attacks, and TLD variations
Threat scoring based on registration status and content similarity
Webhook notifications for newly registered typosquatting domains