hephaestus

Invoke the skill with the failing build command or paste the compiler error. It reproduces the failure, diagnoses the root cause, applies a minimal fix, and re-runs the build until it exits with code 0.

Pass the type error output or a description of the issue as the argument. The agent traces the type errors to their source, applies targeted fixes, and verifies the type check or compile step passes.

Yes, the workflow covers dependency and toolchain diagnosis. When no specific issue is given, it runs the build command to discover failures, then identifies whether the cause is code, dependencies, or toolchain configuration.

The skill repeats its workflow — reproduce, diagnose root cause, apply minimal fix, verify — in a loop until the build command exits with code 0, rather than stopping after a single attempt.

Avoid it when failures stem from unclear requirements or architectural decisions rather than concrete errors. The skill targets reproducible build, type, and toolchain failures, not design-level problems requiring human judgment.