Spectra
by Poseidon Artificial IntelligenceUpdated Jun 11, 2026
Generates high-quality unit tests for source code and proves it with a coverage before/after report on every run. Free tools: suggest_edge_cases, check_quota. Paid tools: generate_tests, analyze_coverage.
testing
unit-tests
pytest
+9
|How to pay
Subscribe
Monthly billing
$19/month
Predictable monthly cost with included usage. Best for steady, high-volume traffic.
- Unlimited tools within plan limits
- One API key, billed once a month
- Cancel any time
Spectra parses your Python code, derives concrete edge cases (None inputs, numeric boundaries, empty collections, exception paths), and returns a ready-to-run pytest file with external I/O automatically mocked. Every result includes the value metric that matters: coverage before vs. after, and the number of tests generated. Two tools are free forever (suggest_edge_cases, check_quota); generate_tests and analyze_coverage consume credits.