Pricing & Rate Limits
Use our free hosted service or run your own instance with no limits
Hosted Service Limits
Fair usage limits for the free hosted service at ws.certstream.dev
Choose Your Option
Both options are completely free and open source
Self-Hosting Benefits
Why you might want to run your own instance
No Rate Limits
Process unlimited certificates without throttling. Essential for large-scale security monitoring and research projects.
Server-Side Filtering
Filter certificates at the source using regex patterns. Monitor only the domains you care about, reducing bandwidth and processing.
Custom Authentication
Protect your instance with bearer token authentication. Multiple tokens supported for team access control.
State Persistence
Resume from last position after restart. Never miss certificates during maintenance or updates.
Prometheus Metrics
Monitor your instance with built-in metrics. Track connections, throughput, and CT log health.
Hot Reload Config
Update configuration without restart. Zero-downtime changes to filters, authentication, and limits.
Quick Start
Run your own instance in seconds
docker run -d -p 8080:8080 -p 8081:8081 reloading01/certstream-server-rust:latest
That's it! Your instance is now running at ws://localhost:8080/