March 5, 2026
When you ask an AI assistant to build a feature, the default output is implementation code — no tests. The AI optimizes for "make it work," not "make it maintainable."
AI generates implementation code without any test coverage. Every feature ships untested unless someone enforces the discipline.
AI code compiles, runs, and handles the happy path. But subtle bugs hide in edge cases — off-by-one errors, null references, race conditions.
AI writes code 10x faster than humans. Without TDD enforcement, you accumulate tech debt 10x faster too.
TLM sits inside your Claude Code CLI and enforces a strict protocol:
Before any implementation code. Tests define the expected behavior as a living specification.
Run the tests — they must fail. A test that passes before implementation is meaningless and proves nothing.
Write the minimum code to make the tests pass. No more, no less.
Verify they pass. Every test green means the implementation matches the specification.
Clean up the code while keeping tests green. The test suite is your safety net.
This isn't optional. TLM hooks detect when Claude tries to skip step 2 and blocks the commit until tests exist.
AI-generated code has a unique failure mode: it looks correct. Without tests, subtle bugs hide in edge cases. When you enforce TDD, you force the AI to think about failure modes before writing implementation.
Boundary conditions in loops, array indexing, and pagination that AI routinely gets wrong.
Missing null checks at system boundaries that crash in production but work in dev.
Empty inputs, large datasets, concurrent access — the scenarios AI never tests voluntarily.
Every bug fix includes a test. Future changes can't silently reintroduce the same issue.
Teams using TLM's TDD enforcement get higher test coverage from day one, fewer production bugs from AI-generated code, faster debugging with failing tests that pinpoint exactly what broke, and confidence to refactor because the test suite acts as a safety net.
TLM enforces TDD automatically when you install it. There's nothing to configure. Write a feature, and TLM ensures tests come first.
150 free credits — enough to build 20-25 features with full test coverage.
Start with 150 free credits