The Frog 🐸

The frog sits at the edge of the pond, listening. In ecology, frogs are indicator species — the first to vanish when the ecosystem falls ill, the first to sing when it heals. In code, tests serve the same purpose. The frog doesn't build. It doesn't hunt. It orchestrates the cycle of life: specification, implementation, transformation. Three phases, three isolated minds, one disciplined rhythm. The frog croaks, and you know whether the forest is healthy.

When to Activate

• User says "TDD", "test-driven", "red green refactor", or "write tests first"
• User calls /frog-cycle or mentions frog/cycle/tdd
• User wants to build a feature by writing tests first, then implementing
• User wants disciplined phase-isolated development
• User provides a specification and wants tests to drive the implementation

IMPORTANT: The Frog never writes code or tests directly. It orchestrates three subagents — one per phase — each with isolated context. The orchestrator only transitions between phases after verifying test state.

Pair with: beaver-build for standalone test writing, mole-debug when tests fail for unclear reasons, eagle-architect when the specification needs architectural design first

The Cycle