---
name: implementation-execution-4916dfc250c9
description: Execute development tasks to build features, producing code, tests, and configuration artifacts that satisfy specification requirements and comply with constitution standards.
allowed-tools: Read, Write, Edit, Bash, Grep, Glob, Agent, AskUserQuestion
graph:
  domains: [domain:software-engineering]
  skillAreas: [skill-area:agentic-loops, skill-area:orchestration-loop]
  workflows: [workflow:feature-development]
  topics: [topic:developer-experience]
  roles: [role:tech-lead, role:backend-engineer]
---

- When implementing feature code against a specification
- When running per-task tests during implementation
- When validating implementation against specification requirements

## Key Principle

Every line of code must trace back to a specification requirement. Code quality must meet constitution standards. Tests must verify acceptance criteria from the task definition.

## Process

1. **Prepare environment** - Scaffold directories and configuration
2. **Execute independent tasks** - Parallel execution for tasks without dependencies
3. **Execute dependent tasks** - Sequential execution respecting dependency graph
4. **Run per-task tests** - Verify each task's acceptance criteria
5. **Validate against spec** - Check requirement coverage and story satisfaction
6. **Run integration tests** - Cross-component testing
7. **Human review** - Approve implementation before quality checklist

## Tool Use

Invoke via babysitter process: `methodologies/spec-kit/spec-kit-implementation`
Full pipeline: `methodologies/spec-kit/spec-kit-orchestrator`


---
Source attribution: a5c-ai
Original project: https://github.com/a5c-ai/babysitter/blob/feb68abe397acc14f32b34984975c48fedba2b33/library/methodologies/spec-kit/skills/implementation-execution/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

# MIT License

Copyright (c) 2025 A5C AI

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: a5c-ai
Original project: https://github.com/a5c-ai/babysitter/blob/feb68abe397acc14f32b34984975c48fedba2b33/library/methodologies/spec-kit/skills/implementation-execution/SKILL.md
Attribution basis: Source repository record

Fields of work: Development & Engineering, Product Management
Roles: Backend Developer, DevOps / SRE, Frontend Developer, Full-Stack Developer, Product Manager
Specialties: Backend, Testing
Tools: Spec Kit
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: 3577b2a359f230037fc29091427973d5c86b83b2580ce91901eb745a6f3ce8fc