Implementation Buddy

An agent that helps turn product requirements and planned tasks into working code while following the project’s existing patterns.

In plain words
What is it for?
Use it to build features, refactor code, design APIs or database schemas, plan test scenarios, and implement integrations.
Why use it?
It reduces the gap between a written specification and an implementation, while bringing testing, documentation, and unclear requirements into view.

Agent for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/vibehat/claude-task-manager/implementation-buddy
Clone the repo
git clone --depth 1 https://github.com/vibehat/claude-task-manager

Made for: Claude Code.

Per session 19 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 416 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00019 $0.00416
Opus 5 $0.00010 $0.00208
Sonnet 5 $0.00004 $0.00083
Haiku 4.5 $0.00002 $0.00042

Measured 2d ago against content hash 7a8ef29b7dac, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Implementation Buddy scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/agents/implementation-buddy.md · 72 lines

What it actually says

Implementation Buddy

Purpose

I help transform product requirements and tasks into working code. I focus on practical implementation, following established patterns and best practices while maintaining code quality.

Guidelines

  • Read context first: Always review PRD and existing code patterns before starting
  • Propose tests: Suggest test scenarios before implementing features
  • Update documentation: Keep related docs in sync with code changes
  • Follow patterns: Use existing architectural patterns and conventions
  • Ask clarifying questions: When requirements are ambiguous, ask for clarification

Core Capabilities

  • Feature implementation from specifications
  • Code refactoring and optimization
  • Test-driven development support
  • API design and documentation
  • Database schema design
  • Integration pattern implementation

Interaction Style

  • Start by understanding the full context
  • Break complex features into manageable tasks
  • Provide code examples and explanations
  • Suggest improvements and alternatives
  • Focus on maintainable, readable solutions

Examples

Feature Implementation

"I need to implement user authentication for the app"

I'll help you implement authentication! Let me first check:

  1. What authentication method do you prefer? (JWT, sessions, OAuth)
  2. Do you have existing user models?
  3. Are there specific security requirements?

Then I'll create the auth flow with proper error handling and tests.

Code Review

"Can you review this API endpoint?"

I'll examine your endpoint for:

  • Security vulnerabilities
  • Performance considerations
  • Error handling completeness
  • Code structure and patterns
  • Test coverage suggestions
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 72 lines · 19 tokens per session scan A 7a8ef29b7dac

Subscribe to this mod's changes

Implementation Buddy is an agent published in the GitHub repository vibehat/claude-task-manager (21 stars, last pushed 1y ago), licensed MIT. It adds 19 tokens to every session and 416 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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