Open source & support tiers
Primitives are Apache 2.0-licensed and free forever. Commercial support + SLAs start at $50/mo. Services for teams who want us building it with them.
HUMMBL
Pricing
Open Source & Library
hummbl-governance on PyPI. Import the primitives, own the
policy.
Free
OSS
$0
- All primitives (Apache 2.0)
- 15,600+ tests, zero runtime dependencies
- GitHub community support
- Forever free
Team
$50
/mo
- Everything in OSS
- Priority email support
- Private Slack channel
- Monthly office hours
Business
$500
/mo
- Everything in Team
- SLA (24h business-hours)
- Dedicated Slack
- 2 advisory calls / month
Enterprise
$25K+
/yr
- Everything in Business
- Assessor-readiness assist
- NIST AI RMF gap analysis
- On-prem deployment support
- Custom indemnification
Services
Hands-on governance engagements for teams that want us building it with them.
Readiness Audit
$2–5K
/ 1 week
- Arbiter A–F grade
- NIST AI RMF gap analysis
- Prioritized remediation roadmap
- Executive summary
Implementation Sprint
$10–25K
/ 2–4 weeks
- CI quality gates
- Agent guardrails
- Kill switch / circuit breaker wiring
- Runbook documentation
Retainer
$3–5K
/ month
- Monthly trend reports
- Quality drift alerts
- On-call support
- 3-month minimum
Base120 API
The Base120 REST API is free during beta, no auth required, 100 requests/minute. See docs for endpoints.
Frequently Asked Questions
Is there really no catch with the free tier?
No catch. We're in beta building the best mental models API. Free tier stays free even after we launch paid tiers.
What happens when I hit the rate limit?
You get a 429 response with a Retry-After header. Wait a few seconds and retry. We don't ban or throttle beyond the window.
Do I need an API key?
Not currently. The Base120 API is fully open during beta.
Can I use this in production?
Yes. The API is production-ready and running on Cloudflare Workers with global edge deployment. Response times are typically under 50ms.
How do I start with a paid tier?
Schedule a call at cal.com/hummbl/30min and we'll scope the right tier for your team.