Evaluation and self-host
Free
Run diffs locally before you need hosted watches.
$0 / forever
- 3 watches · daily checks
- 7-day snapshot retention
- OSS MCP client + command line (CLI) diff
- Community support
Plans
Most popular
Breadth for solo engineers
Pro
Cover your dependency catalog with scheduled checks and alerts.
$59 / mo
Freshness
High-signal endpoints
Critical
One-minute checks when latency to drift matters most.
$149 / mo
Breadth for platform teams
Fleet
Audit-ready retention and five-minute coverage at fleet scale.
$179 / mo
Scale beyond Fleet
Heavy catalogs, compliance exports, and custom contracts.
Heavy catalogs and compliance
Fleet+
Double the watch headroom with the same five-minute cadence.
$279 / mo
Logo accounts
Enterprise
SSO, custom SLAs, and annual invoicing for regulated teams.
Custom / annual
- Unlimited watches (contractual)
- SSO, custom SLAs, annual invoice
- Dedicated onboarding
- Partner programs — affiliate program
Free trialOne endpoint, full Pro features, no card
Free locallyMIT gates + MCP offline; hosted adds scheduled checks and alerts
Cancel anytimeMonthly or annual billing (save 20%)
Founding Pro$29/mo locked for first 50 customers
API keysActivate at /activate after checkout
CI gateContinuous integration (CI) coverage on Pro and above
Self-host free. Start hosted when the watch has to stay on.
The MIT client covers local diff, MCP tooling, and CI gates. When you need scheduled checks, alert routing, and drift history between releases, use one hosted trial endpoint first.
Compare plans side by side
Self-host free on GitHub, or let DriftGuard host your watches. Pro balances breadth and cost. Critical trades watch count for one-minute freshness. Fleet adds full-year retention and priority support.
Included Not on this plan
| Feature | Free $0 Self-host | Most popular Pro $59/mo Solo engineers | Critical $149/mo Freshness | Fleet $179/mo Platform teams |
|---|---|---|---|---|
| Monitoring capacity | ||||
| Endpoints you can watch | 3 | 30 | 12 | 75 |
| How often we check | Once per day | Every 15 min | Every 1 min | Every 5 min |
| Schema history kept | 7 days | 90 days | 90 days | 1 year |
| Change history kept | 14 days | 180 days | 180 days | 1 year |
| Check traces and latency | — | 30 days | 30 days | 1 year |
| Alerts and integrations | ||||
| HTTPS webhooks (Slack, PagerDuty, …) | — | ✓ | ✓ | ✓ |
| Breaking-only alerts quiet by default | — | ✓ | ✓ | ✓ |
| MCP tool schema monitoring | ✓ | ✓ | ✓ | ✓ |
| Continuous integration (CI) gate GitHub and GitLab | — | ✓ | ✓ | ✓ |
| APIs and export | ||||
| Hosted API key | — | ✓ | ✓ | ✓ |
| Runtime validate ingress gate | OSS CLI only | 25k / mo | 25k / mo | 100k / mo |
| Watch health API | — | ✓ | ✓ | ✓ |
| Drift summary API | — | ✓ | ✓ | ✓ |
| Drift export (CSV / JSON) | — | 500 rows | 500 rows | 5,000 rows |
| Portfolio status and preflight API | — | ✓ | ✓ | ✓ |
| Console: Insights, Needs Review, search | — | ✓ | ✓ | ✓ |
| Support | ||||
| Support | Community | Priority | ||
| Get started | Self-host free | Choose Pro | Choose Critical | Choose Fleet |
Need 150 watches? See Fleet+ above. Try one endpoint free with full Pro features — no credit card. Start free trial
Frequently asked questions
Is DriftGuard right for us?
One API you control → in-repo checks or evals may be enough. Vendor APIs and MCP catalogs in production → baseline, diff, and watches pay off. All 12 fit questions →
What happens after I pay?
Complete checkout, then go to /activate with the same email. You receive your dg_ API key and can register watches via API or MCP. See Product for endpoints.
How do Pro, Critical, and Fleet differ?
Pro ($59/mo) is the breadth tier — 30 watches at 15-minute intervals. Critical ($149/mo) trades watch count for one-minute checks on up to 12 high-signal endpoints. Fleet ($179/mo) is for platform teams: 75 watches, five-minute checks, and full-year retention. See the Fleet breakdown for scenario math.
Is there a free trial?
Yes. One endpoint with full Pro features — no credit card. Start free trial and upgrade when you need more watches or faster checks.
Can I self-host instead?
Yes. The diff engine, MCP client, and gate packages (MockDrift, FuseGuard, ToolChange, SchemaSync) are MIT on GitHub. Use the command line (CLI) or continuous integration (CI) gates locally. Hosted adds scheduled checks, drift history, webhooks, console, and billing-backed API keys.
How does annual billing work?
Pay yearly and save 20%. Pro from $47/mo billed annually ($566/yr), Critical from $119/mo ($1,430/yr), Fleet from $143/mo ($1,718/yr). Founding members lock in the discounted annual rate too. Use the billing toggle above the plans before checkout.
What is founding member pricing?
The first 50 Pro customers lock in $29/mo forever (list $59). Critical and Fleet are not discounted at launch.
Start monitoring before the next breakage
Try one endpoint on a full Pro trial — no credit card. Upgrade when you need fleet coverage, continuous integration (CI) gates, and faster checks.