Is a configuration file required?

While it can auto-detect services and use defaults, providing a .claude/spec-workflow/config.yaml allows for fine-tuned control over worktree paths, build commands, and parallelization behavior.

What is the main benefit of using Spec Executor?

It ensures that AI-driven code changes strictly adhere to a pre-defined technical specification, reducing 'hallucinations' and manual implementation errors through a structured, multi-phase execution process.

How does it handle failed tests or blockers?

The skill follows a 'stop on blockers' philosophy. If a test fails or an instruction is unclear, it pauses execution and presents the user with a detailed context report and options for resolution.

Does it support parallel tasks?

Yes, if your spec includes a parallelization plan, the skill can launch sub-agents to handle independent implementation steps simultaneously while respecting your configured agent limits.

Can I resume an execution if it stops?

Absolutely. Use the --resume flag to pick up exactly from the last successful checkpoint or task, preventing you from having to restart the entire implementation process.

Spec Implementation Executor

Name: Spec Implementation Executor
Author: ky1ejs

byky1ejs

•

Productivity & Workflow

Automates the implementation of technical specifications with batched execution, parallelization support, and rigorous verification steps.

About

Spec Implementation Executor is a specialized Claude Code skill designed to turn detailed technical specifications into production-ready code. It follows a structured six-phase workflow—from environment setup and worktree isolation to batched execution and final PR creation—ensuring high-fidelity adherence to architectural requirements. By utilizing checkpoints for user feedback and supporting sub-agent parallelization, it maintains project momentum while preventing undocumented deviations or 'hallucinated' features. It is the ideal companion for the spec-writer skill, closing the loop between design and implementation.

Key Features

1 GitHub stars
Automatic spec status tracking and final pull request generation upon completion
Native support for git worktrees to ensure isolated and safe development environments
Integrated verification cycles including build, lint, and test suite automation
Parallel execution capabilities using sub-agents for independent implementation tasks
Batched execution with configurable checkpoints for user feedback and review

Use Cases

Implementing complex features from technical design documents without constant manual oversight
Scaling development throughput by parallelizing independent sub-tasks across multiple agents
Automating repetitive migration or refactoring tasks defined in a structured spec file

About

Key Features

1 GitHub stars
Automatic spec status tracking and final pull request generation upon completion
Native support for git worktrees to ensure isolated and safe development environments
Integrated verification cycles including build, lint, and test suite automation
Parallel execution capabilities using sub-agents for independent implementation tasks
Batched execution with configurable checkpoints for user feedback and review

Use Cases

Implementing complex features from technical design documents without constant manual oversight
Scaling development throughput by parallelizing independent sub-tasks across multiple agents
Automating repetitive migration or refactoring tasks defined in a structured spec file