Agent
Write minimal implementation to make failing tests pass. Use this agent when the craft skill dispatches an implementation task from a yak with agent-type 'agent-impl'. The agent writes implementation ONLY — never modifies test files. Applies a YAGNI simplification pass after tests pass. Reports GREEN gate status.
Agent
Execute non-TDD phase tasks like schema migrations, infrastructure setup, or configuration. Use this agent when the craft skill dispatches a task from a yak with agent-type 'no-test'. The agent executes the task as described and verifies the acceptance gate.
Agent
Fix implementation after validation finds failures. Use this agent when the craft skill creates a remediation yak with agent-type 'agent-remediate'. The agent fixes implementation code ONLY — never modifies test files. Receives failure output from the validation agent. Escalates to user after 2 failed attempts.
Agent
Write failing tests for a TDD phase. Use this agent when the craft skill dispatches a test-writing task from a yak with agent-type 'agent-test'. The agent writes tests ONLY — never implementation code. It receives a self-contained task context with file paths, test spec, and test command. Reports RED gate FAIL if…
Agent
Run the full test suite and report results without modifying any files. Use this agent when the craft skill dispatches a validation task from a yak with agent-type 'agent-validate'. The agent runs tests, type-checks, and linting — all must exit 0 for the VALIDATE gate to pass. Reports only, never fixes.