Test Retell 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 Retell
Add your Retell API key and select regions. - 02
Sync agents
Enable auto-sync to pull new agents every few minutes. - 03
Run a test
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
- 01Go to Agents > Providers > Connect Retell.
- 02Paste your Retell API key and save.
- 03Choose default regions and enable auto-sync agents.
- 04Verify agents in Agents > List and run a small test.
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.
- Provider metadata shows Retell IDs and sync timestamps.
Built for Retell teams.
Provider-aware testing and monitoring, without changing your stack.
Region-aware testing
Match Retell regions to where your agents are deployed.Auto-sync every 5 minutes
Keep Retell agents up to date without manual imports.Provider metadata validation
Confirm Retell IDs and recordings per test 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 Retell agents with Hamming.
Browse every answer on the FAQ pageAdd 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.