It runs as scoped. Or the final milestone is waived.
No "best-effort" language. No "subject to platform limitations." Every Kastiv build ships with written acceptance criteria, and the Guarantee is tied to those criteria - not to our interpretation of them.
Written before a line of code is written.
We draft acceptance criteria during the audit. You approve them before we start the build. The Guarantee is anchored to those criteria - not to informal promises.
Trigger fires
Every trigger defined in your acceptance criteria fires correctly - CRM stage change, new contact, form submission, webhook event - whatever was scoped.
Video renders and delivers
HeyGen or Synthesia renders the video using the correct merge fields, and the video link arrives in the defined delivery target - email, CRM record, outreach tool.
Errors handled, not dropped
Every failure path we scoped - API timeout, rate limit, bad CRM record - is caught, logged, and retried or dead-lettered. Silent failures are a build defect.
The Guarantee covers the build.
- Every acceptance criterion in the signed agreement
- Error handling on every scoped failure path
- Correct trigger-to-delivery logic for all scoped triggers
- All bugs or defects found within 30 days of handover
The Guarantee does not cover the platform.
- Platform API changes after the 30-day fix window
- Scope added after the agreement was signed
- Data quality issues from your CRM (dirty records, missing fields)
- HeyGen or Synthesia account limits or billing issues
APIs change. You have two options.
HeyGen, HubSpot, and Salesforce update their APIs. Your pipeline needs to keep up.
Maintain retainer - $997/mo
Pipeline monitoring, API patch updates, token refresh management, and one sequence change per month. We own the uptime.
Ask about the retainerSelf-manage with handover docs
Every build ships with full handover documentation: architecture diagram, API reference, error handling logic, and troubleshooting guide. Your team can run it independently.
No lock-in. Your pipeline, your infrastructure.Questions about the Guarantee.
What exactly is scoped in the agreement?
The acceptance criteria are written before a single line of code is written. We list every trigger, every output, every error-handling path. If it is in the criteria, the Guarantee covers it. If it is not, it is a change order — agreed with your explicit sign-off before work starts.
What happens if the pipeline breaks after the 30-day fix window?
The Maintain retainer ($997/mo) covers ongoing monitoring, API patch updates, and token refresh management. If you run it yourself, our handover docs give your team everything they need to diagnose and fix issues independently.
Does the Guarantee cover platform API changes?
No. HeyGen, Salesforce, and HubSpot update their APIs independently. The Guarantee covers what we built. If a platform API changes after your 30-day fix window closes, that is covered by the Maintain retainer or a separate fix engagement.
What if my CRM data is dirty?
We build in data validation and flag bad records — but we cannot guarantee video quality for contacts with missing or corrupted fields. We document the validation logic in the acceptance criteria so you know exactly what is checked before a job is queued.
How do I verify you have honored the Guarantee?
Every pipeline we ship includes a run log: every video render, every webhook, every failure, and every retry. You can audit the log at any time to confirm the pipeline ran as scoped.
Start with a free Pipeline Audit.
We scope the build, write the acceptance criteria, and price it fixed before you commit to anything.
Book your free auditFixed price. Written acceptance criteria. Working Pipeline Guarantee on every build.