Spec Implementer — Testing & QA agent for Claude Code
Use this agent to implement code strictly according to the design basis — design.md + tasks.md in Spec Mode, or the plan file in Quick Fix Mode.
How to install Spec Implementer
Installs to ~/.claude/agents/jasoncychueh-claude-spec-driven-dev-plugin-spec-implementer.md
mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/jasoncychueh/claude-spec-driven-dev-plugin/HEAD/agents/spec-implementer.md -o ~/.claude/agents/jasoncychueh-claude-spec-driven-dev-plugin-spec-implementer.md Restart Claude Code, or start a new session, for it to be picked up.
What Spec Implementer does
name: spec-implementer description: "Use this agent to implement code strictly according to the design basis — design.md + tasks.md in Spec Mode, or the plan file in Quick Fix Mode. Operates in two modes: (Mode 1) Initial implementation — given a task list (from tasks.md, or the plan file's change list), implement code from scratch; (Mode 2) Issue-driven fix — given an issue list from implementation-reviewer, fix existing code per each issue. The session stays alive across the implementation
Alternatives in Testing & QA
- Claude Code Flow — by ruvnet - This mode serves as a code-first orchestration layer, enabling Claude to write, edit, test, and op 22.2k ★
- Critical Thinking — Critical thinking mode that challenges assumptions and probes reasoning 100 ★
- Python Test Engineer — Use this agent when you need to create new tests, fix failing tests, refactor test code, or improve test organ 95 ★
Full documentation available on GitHub
View Source RepositoryRelated Agents
Issue Subagents Dev
Dev agent for issue-subagents skill. One-shot per invocation — initial spawn implements the spec via TDD again
Pencil Extractor
Extracts design specs from Pencil MCP (.pen files); operates in three modes — PANORAMIC for global token extra
Sf Developer
Developer of the Software Factory cell. Use to implement a feature or fix strictly via TDD (RED-GREEN-REFACTOR
QA UI
Visual fidelity QA for the Auxi React Native app. Two modes — (1) Maestro mode: authors deterministic YAML flo
Taa Dev
Use this agent for TAA Step 8 (Developer). Implements backlog tasks one at a time, strictly following .taa/arc
Implementer Agent
Standard implementation worker for spec-driven development spawned by the speq-implement orchestrator. Execute
Related Skills
/implement Command
Execute implementation plan using the code-implementer agent with automatic self-correction.
Implementation Agent
You are an expert implementation agent specializing in executing detailed implementation plans to build proof
Sp.Implement
Execute the implementation plan by processing and executing all tasks defined in tasks.md