Pricing

Simple, honest pricing.

The compound lookup endpoint is free forever. Paid tiers unlock the full query surface.

Free

$0 / forever

Single compound lookup by HQ ID. No key required. No account needed.

  • ✓ GET /api/compound/:id
  • ✓ All 1,183 compounds
  • ✓ All risk contexts
  • ✓ Full synthesis response
  • — Paginated list queries
  • — Batch / CAS lookup
  • — Regulatory + exposure endpoints
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Most popular

Developer

$29 / month

Full API access for individuals building apps, tools, or research pipelines.

  • ✓ Everything in Free
  • ✓ All 13 endpoints
  • ✓ 10,000 requests / day
  • ✓ CAS number lookup
  • ✓ Batch (up to 50 compounds)
  • ✓ Regulatory + exposure filters
  • ✓ Key status + usage tracking
Get Developer Access

Pro

$99 / month

For teams, companies, and high-volume applications that need headroom.

  • ✓ Everything in Developer
  • ✓ 100,000 requests / day
  • ✓ Priority email support
  • ✓ Early access to new endpoints
  • ✓ Usage analytics on request
  • — White-label / SLA (Enterprise)
  • — Custom datasets (Enterprise)
Get Pro Access

Enterprise

Custom

White-label access, SLA, custom data coverage, and volume pricing.

  • ✓ Everything in Pro
  • ✓ Unlimited requests
  • ✓ SLA guarantee
  • ✓ White-label / domain isolation
  • ✓ Custom compound coverage
  • ✓ Dedicated support
  • ✓ Data export + licensing
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Full feature comparison

Feature Free Developer Pro Enterprise
Core Data
Compounds (1,183)✓✓✓✓
Materials (262)—✓✓✓
Products (237)—✓✓✓
Risk synthesis (IARC / EPA / EFSA)✓✓✓✓
All 12 risk contexts (dog, cat, pregnant, etc.)✓✓✓✓
Endpoints
GET /api/compound/:id✓✓✓✓
GET /api/compounds (paginated list)—✓✓✓
POST /api/compounds/batch—✓✓✓
GET /api/compound/cas/:cas—✓✓✓
Regulatory endpoints (agencies, by-agency)—✓✓✓
Exposure endpoints (found-in, by-category)—✓✓✓
Rate Limits
Daily request limitUnlimited*10,000 / day100,000 / dayUnlimited
Resets—Midnight UTCMidnight UTC—
Support
Email support—Best effortPriorityDedicated
SLA———✓

* Free tier: no rate limit on /api/compound/:id specifically, though Vercel platform limits apply.

Lost your API key?

Enter the email you used to subscribe and we'll resend it. Rate limited to 3 attempts per hour.

Frequently asked questions

Is the free tier really free?

Yes. GET /api/compound/:id requires no API key, no account, and has no hidden rate limit. That's 1,183 compounds accessible to anyone, indefinitely. The free tier is a principle, not a funnel.

What happens when I hit the daily limit?

Requests return HTTP 429 with a JSON body showing your reset time (midnight UTC). The counter resets automatically — no action required.

How do I authenticate?

Send your key in the X-API-Key header: curl -H "X-API-Key: aletheia_live_..." https://api.aletheia.holisticquality.io/api/compounds

Can I cancel anytime?

Yes. Subscriptions are monthly and cancel immediately with no fees. Your key remains active until the end of the billing period.

What's the data source?

The HQ Safety Database at safety.holisticquality.io. Compounds are sourced from IARC, EPA IRIS, EFSA, ATSDR, ASPCA APCC, FDA, and OSHA. All classifications are traceable to primary sources.

Do you sell or share usage data?

No. Holistic Quality LLC does not run ads, does not sell data, and does not share usage data with third parties. Data policy →

I need something not on this page.

Email api@holisticquality.io or use the Enterprise contact above. Custom compound coverage, data licensing, and embedded deployments are all possible.