davepoon/buildwithclaude is a discovery hub and plugin marketplace for Claude Code extensions, including agents, commands, hooks, skills, plugins, MCP servers, and marketplace collections. Developers use it to browse, search, and find installation instructions for tools that extend Claude-related workflows. Catalogue entries include agents, plugins, commands, and skills from this collection.
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.
npx skills add davepoon/buildwithclaude --skill implement-featuregit clone --depth 1 https://github.com/davepoon/buildwithclaudeWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/davepoon/buildwithclaude/implement-feature)<a href="https://agentmods.dev/skills/davepoon/buildwithclaude/implement-feature"><img src="https://agentmods.dev/badge/skills/davepoon/buildwithclaude/implement-feature/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/davepoon/buildwithclaude/implement-feature"><img src="https://agentmods.dev/badge/skills/davepoon/buildwithclaude/implement-feature.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00034 | $0.00360 |
| Opus 5.5 | $0.00014 | $0.00144 |
| Sonnet 5.5 | $0.00007 | $0.00072 |
| Haiku 4.5 | $0.00003 | $0.00036 |
Grade A, and why
implement-feature 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 1mo 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.
What it actually says
Implement Feature
Implements a feature from its specification using the Forja (Dev) agent.
When to Use This Skill
- A feature spec has been approved and is ready for implementation
- You need architecture design, code, and tests for a defined feature
- Translating product requirements into working software
What This Skill Does
- Runs the SIGN IN checklist and verifies the spec handoff
- Designs architecture (creates ADR if needed)
- Defines interfaces/contracts, then implements in
src/ - Writes tests in
tests/(unit + integration) - Runs the Implementation Complete checklist (TIME OUT 1)
- Runs the Pre-Delivery checklist (TIME OUT 2)
- Prepares structured handoff to QA agent
- Runs the SIGN OUT checklist
How to Use
Basic Usage
/implement-feature webhook-event-system
With Spec Reference
/implement-feature docs/specs/webhook-event-system.md
Example
User: /implement-feature user-authentication
Output:
- Implementation in
src/with all acceptance criteria met - Tests in
tests/covering critical paths - ADR if significant architecture decisions were made
- Handoff notes for QA: files changed, how to test, known limitations
Tips
- Ensure the feature spec exists before running this skill
- The agent creates an ADR for any significant architecture decisions
- Two TIME OUT checkpoints ensure both correctness and delivery cleanliness
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.
- 1mo ago First seen · 57 lines · 34 tokens per session scan A 843bf4b5799a
implement-feature is a skill published in the GitHub repository davepoon/buildwithclaude (3,677 stars, last pushed today), licensed MIT. It adds 34 tokens to every session and 360 once invoked, about $0.0001 per session on Opus 5.5. 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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