Test Vapi agents
- Time to value
- First test report in under 10 minutes
- Setup
- 4 steps
First test report in under 10 minutes
Connect your provider, sync your agents, and validate real calls in one workflow.
- 01
Connect Vapi
Link your Vapi account to Hamming in one click. - 02
Sync assistants
Enable auto-sync to keep assistants and overrides updated. - 03
Run a test
Launch a test run and review transcripts, audio, and metrics.
What you need
- Vapi account with configured assistants.
- Optional: custom overrides and variable values to validate.
Connect in minutes
- 01Go to Agents > Providers > Connect Vapi.
- 02Authenticate with your Vapi credentials.
- 03Enable auto-sync to import your assistants automatically.
- 04Verify in Agents > List, then run a test call.
Validation checklist.
Confirm the integration works before you scale your tests.
- Provider shows Connected in Agents > Providers.
- Agents appear in Agents > List with the provider badge.
- A test run produces transcripts and audio in the run summary.
- Vapi dashboard lists Hamming test calls after the run.
Built for Vapi teams.
Provider-aware testing and monitoring, without changing your stack.
Assistant-level sync
Keep assistant configuration and overrides aligned with every sync.Outbound call support
Auto-generate room links and call IDs for outbound voice tests.Provider-aware analytics
Review transcripts, recordings, and tool call data per Vapi run.
What we measure.
50+ quality metrics across accuracy, conversation quality, voice performance, and task completion.
Accuracy & Correctness
- Factual accuracy
- Intent recognition
- Response relevance
- Hallucination detection
Conversation Quality
- Turn-taking flow
- Interruption handling
- Context retention
- Conversation completion
Voice & Audio
- Latency (time to first word)
- Speech clarity
- Background noise handling
- Accent robustness
Task Completion
- Tool call success rate
- API integration reliability
- Goal completion rate
- Error recovery
Why vendor-neutral
testing?
The same metrics across every provider, instead of scores your vendor reports about itself.
| Aspect | Provider built-in testing | Hamming |
|---|---|---|
| Objectivity | Provider built-in testingOptimized for their platform | HammingVendor-neutral evaluation |
| Consistency | Provider built-in testingMetrics vary by provider | HammingSame 50+ metrics across all providers |
| Cross-vendor comparison | Provider built-in testingCan't compare across vendors | HammingA/B test agents across any provider |
| Independence | Provider built-in testingSelf-reported results | HammingThird-party validation |
| Compliance | Provider built-in testingLimited audit trail | HammingSOC 2 certified, audit-ready reports |
| Scale | Provider built-in testingPlayground-level testing | Hamming50K+ concurrent test calls |
What you get
with Hamming.
- Auto-generate test cases and guardrails from your prompt.
- Pull tool call data, transcripts, and recordings directly from your provider.
- Run your first test in under 10 minutes with 50+ built-in metrics.
- Test both voice and chat agents with unified evaluation.
Frequently asked
questions.
Everything you need to know about testing Vapi agents with Hamming.
Browse every answer on the FAQ pageConnect your Vapi account to Hamming with one click, enable auto-sync to import assistants, and run automated tests. Hamming simulates real customer calls and evaluates responses with 50+ quality metrics including accuracy, latency, and conversation flow.
Yes. Hamming auto-syncs your Vapi assistants, including overrides and variable values. Configuration changes are reflected automatically without manual imports.
Hamming captures transcripts, audio recordings, tool call data, and call IDs from every Vapi test. Review conversations in the Hamming dashboard or export for analysis.
Hamming auto-generates room links and call IDs for outbound voice tests. Configure test scenarios with target phone numbers or use WebRTC for faster iteration.
Most teams run their first Vapi test within 10-15 minutes. Connect your account, enable auto-sync, and Hamming generates test scenarios from your assistant's prompt automatically.
Yes. Hamming tests any Vapi configuration including custom LLM providers, function calling, and knowledge bases. Test scenarios validate end-to-end conversation quality regardless of your LLM setup.
Hamming runs hundreds of test scenarios in parallel, simulating diverse accents, background noise, and edge cases that manual testing misses. Teams report 90% reduction in testing time and catch 3x more issues before production.
Yes. Hamming evaluates agents using any Vapi voice configuration including ElevenLabs, PlayHT, and custom cloned voices. Audio-native evaluation analyzes actual speech quality, not just transcriptions.