Test Vapi Agents
Connect your Vapi assistant in minutes. Auto-sync configurations, auto-generate test scenarios from your prompt, and run reliable agent tests with transcripts, recordings, and 50+ quality metrics.
Hamming works with
Time to value
First test report in under 10 minutes
Connect your provider, sync your agents, and validate real calls in one workflow.
Link your Vapi account to Hamming in one click.
Enable auto-sync to keep assistants and overrides updated.
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
- 1Go to Agents > Providers > Connect Vapi.
- 2Authenticate with your Vapi credentials.
- 3Enable auto-sync to import your assistants automatically.
- 4Verify in Agents > List, then run a test call.
Validation checklist
Confirm the integration is working before scaling 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.
Provider-specific capabilities
Built for Vapi teams
Provider-aware testing and monitoring without changing your stack.
Keep assistant configuration and overrides aligned with every sync.
Auto-generate room links and call IDs for outbound voice tests.
Review transcripts, recordings, and tool call data per Vapi run.
50+ quality metrics
What we measure
Comprehensive evaluation 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
Independent evaluation
Why vendor-neutral testing?
Get unbiased results with consistent metrics across all providers—not self-reported scores from your vendor.
| Aspect | Provider built-in testing | Hamming |
|---|---|---|
| Objectivity | Optimized for their platform | Vendor-neutral evaluation |
| Consistency | Metrics vary by provider | Same 50+ metrics across all providers |
| Cross-vendor comparison | Can't compare across vendors | A/B test agents across any provider |
| Independence | Self-reported results | Third-party validation |
| Compliance | Limited audit trail | SOC 2 certified, audit-ready reports |
| Scale | Playground-level testing | 1000+ concurrent production tests |
What you get with Hamming
- Auto-generate test cases and assertions 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 quality metrics.
- Test both voice and chat agents with unified evaluation.
Frequently Asked Questions
Everything you need to know about testing Vapi agents with Hamming.
Connect 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.