Test Retell Agents
Sync Retell agents and validate performance fast. Auto-generate test scenarios from your prompt and run automated 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.
Add your Retell API key and select regions.
Enable auto-sync to pull new agents every few minutes.
Execute a test run and review audio plus transcripts.
What you need
- Retell API key (Dashboard > Developer > API Keys).
- Retell agents configured with the intents you plan to test.
- Optional: dedicated Retell project to isolate test traffic.
Connect in minutes
- 1Go to Agents > Providers > Connect Retell.
- 2Paste your Retell API key and save.
- 3Choose default regions and enable auto-sync agents.
- 4Verify agents in Agents > List and run a small test.
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.
- Provider metadata shows Retell IDs and sync timestamps.
Provider-specific capabilities
Built for Retell teams
Provider-aware testing and monitoring without changing your stack.
Match Retell regions to where your agents are deployed.
Keep Retell agents up to date without manual imports.
Confirm Retell IDs and recordings per test 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 Retell agents with Hamming.
Add your Retell API key to Hamming, select your deployment regions, and enable auto-sync. Hamming imports agents automatically and runs tests with transcripts, recordings, and 50+ quality metrics.
Yes. Configure region settings to match where your Retell agents are deployed. Hamming runs tests in the correct regions to ensure accurate latency and performance measurements.
Auto-sync runs every 5 minutes by default. New agents and configuration changes appear in Hamming automatically without manual intervention.
Hamming captures Retell IDs, sync timestamps, transcripts, recordings, and tool call data. Provider metadata validation confirms test runs executed against the correct agent version.
Most teams run their first Retell test in under 10 minutes. Add your API key, enable auto-sync, and Hamming generates test scenarios from your agent configuration.
Yes. Hamming validates Retell function calling, API integrations, and tool execution. Test scenarios verify that agents correctly invoke functions and handle responses in conversation context.
Hamming measures end-to-end latency including time-to-first-word, turn latency, and response times. Tests run in your configured regions to ensure accurate latency measurements that match production conditions.
Yes. Schedule automated test runs via API or CI/CD integration. Hamming detects regressions when agent behavior changes between releases, preventing production issues before deployment.