Free
$0forever
For trying the diff engine on a handful of endpoints.
- 3 endpoints
- Manual checks
- Baseline history
- Slack + Discord + webhooks
- OpenAPI import
Pricing for API monitoring
Start free. Scale when monitoring becomes part of how you ship.
Starter
$19/month
Scheduled monitoring for small teams and side projects.
- 20 endpoints
- Scheduled checks
- Slack + Discord + webhooks
- Alert history
- OpenAPI import
Pro
$49/month
More endpoints and schedules for growing monitoring needs.
- 100 endpoints
- Scheduled checks
- Slack + Discord + webhooks
- Alert history
- OpenAPI import
Team
Custom
Custom limits and priority support, arranged directly with us. Not a self-serve tier.
- Custom endpoint limits
- Priority support
- Dedicated onboarding
FAQ
- Is this just a JSON diff tool?
- No. APIDiffGuard monitors live endpoints, stores versioned baselines, schedules checks, and alerts on schema drift — the diff viewer is the signature surface, not the whole product.
- Can I ignore volatile fields?
- Built-in defaults ignore volatile leaf names (request_id, timestamp, and similar). Add custom paths on each endpoint’s Ignore rules panel.
- Is there a CLI?
- Yes. Use apidiff check from packages/cli (with --header for private APIs) or POST /api/v1/endpoints/:id/check with a workspace token from Settings → Tokens.
- What auth types are supported?
- Bearer, API key, Basic, OAuth token, and custom headers.