Patent Pending · Rust-native · <15 ms p99

Simple, transparent pricing

Start free. Scale without surprises. Enterprise teams get dedicated deployments and custom SLAs.

MonthlyAnnualSave 17%
Self-Hosted
Cloud
Open Source

Self-Hosted Free

Run it yourself, forever

Free

git clone && make demo

Get the repo
  • Unlimited (local) Events validated / month
  • 3 (starter) Active contracts
  • Contract versions
  • Ingest API
  • Playground (test without save)
  • Local Postgres Audit log retention
  • Stream demo dashboard
  • Batch ingest

Cloud Free

Explore & prototype

$0
Start free
  • 100K Events validated / month
  • 3 Active contracts
  • 3 per contract Contract versions
  • Ingest API
  • Playground (test without save)
  • 7 days Audit log retention
  • Stream demo dashboard
Most popular

Pro

Production workloads

$199

per month, or $166/mo billed annually ($1,992/yr)

  • 25M Events validated / month
  • Unlimited Active contracts
  • Unlimited Contract versions
  • Ingest API
  • Playground (test without save)
  • 90 days Audit log retention
  • Stream demo dashboard
  • Batch ingest

Enterprise

Scale without limits

Custom

contact us

Talk to us
  • Unlimited Events validated / month
  • Unlimited Active contracts
  • Unlimited Contract versions
  • Ingest API
  • Playground (test without save)
  • Custom Audit log retention
  • Stream demo dashboard
  • Batch ingest

Full feature comparison

Feature

Self-Hosted Free

self-hosted

Cloud Free

cloud

Pro

cloud

Enterprise

cloud
Events validated / month
Unlimited (local)
100K
25M
Unlimited
Active contracts
3 (starter)
3
Unlimited
Unlimited
Contract versions
3 per contract
Unlimited
Unlimited
Ingest API
Playground (test without save)
Audit log retention
Local Postgres
7 days
90 days
Custom
Stream demo dashboard
Batch ingest
Data-parallel validation (Rayon)
Auth & API key management
Multi-tenancy
PII transform rules
Quarantine replay
Visual contract builder
Contract generator (JSON → YAML)
Semantic versioning + promotion
GitHub sync
Team invites & roles
CSV → YAML inference
Brownfield scaffolder (+ PII)
Provider Scorecard
Egress API (outbound validation)
AI Collaborate (contract proposals)
Kafka / Kinesis streaming
Available on request
Open data catalog (browse + fork)
Import by ref — snapshot
Import by ref — subscribe (live)
API Workbench — Try It (1 endpoint)
API Workbench — full (save / deploy / suite)
SSO / SAML
Custom SLA
Audit log export (S3 / GCS)
Dedicated deployment
Priority support + SRE on-call
Custom contract templates

What counts as an event?

Any JSON object submitted to POST /ingest/{contract_id} (inbound) or POST /egress/{contract_id} (outbound). Batch calls count each item individually.

Can I switch plans mid-month?

Yes. Upgrades take effect immediately (prorated). Downgrades apply at the start of your next billing cycle.

Is the Free tier time-limited?

No. The Free tier is permanent. You only need to upgrade when you exceed 100K events/month or need Pro features.

How does Enterprise deployment work?

We support dedicated cloud (VPC), on-prem (Kubernetes), and air-gapped deployments. Contact us for architecture details.

Do you offer a trial?

Pro comes with a 30-day free trial. You add a card at checkout and aren't charged if you cancel before the trial ends. Enterprise prospects get a POC environment on request.

What does 'patent pending' mean for my stack?

The semantic contract enforcement methodology is patent pending (US filing). Your use is licensed; you are protected from third-party IP claims.

What's the difference between Self-Hosted Free and Cloud Free?

Self-Hosted Free runs the full gateway binary on your machine — unlimited local events, no account needed. Cloud Free is the managed SaaS tier with auth, API keys, and cloud retention. Self-Hosted Free has no Cloud features (multi-tenancy, GitHub sync, etc.).

🏢

Building something large-scale?

Enterprises get custom event volumes, dedicated deployments, SSO, audit export, and a named SRE. We'll scope your POC in one call.

Talk to sales →