E2E Testing for
Vapi Voice Agents
You built your Vapi agent. Now make sure it actually works. vspec runs real phone calls against your Vapi number and checks every response — automatically.
Point vspec at your
Vapi number. Done.
Add your Vapi phone number
Paste in the phone number assigned to your Vapi assistant. No API keys, no SDK changes — vspec calls it like a real user would.
Write your test scenarios
Describe what a caller should say and what your Vapi agent must do. Check booking confirmations, fallback handling, or multi-turn conversations.
Get pass/fail on every deploy
Run tests manually or hook into your CI pipeline. vspec calls your Vapi number, records the transcript, and reports back instantly.
Everything that can
go wrong — tested.
Prompt regressions
Catch the moment a Vapi system prompt change breaks your agent's behavior. Run vspec in CI and get a red build before users notice.
Tool call validation
Verify that your Vapi agent actually calls the right functions — calendar lookups, CRM updates, booking APIs — and handles failures gracefully.
Fallback & edge cases
Test what happens when a caller gives unexpected input, stays silent, or asks something out of scope. Make sure Vapi handles it correctly.
Multi-turn conversations
Simulate realistic back-and-forth dialogues across multiple turns. Validate that context is maintained throughout the full call flow.
Your Vapi agent deserves
a proper test suite.
Free tier. No credit card. First test in under 2 minutes.
Start testing for free →