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.
git 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/agents/davepoon/buildwithclaude/lyra)<a href="https://agentmods.dev/agents/davepoon/buildwithclaude/lyra"><img src="https://agentmods.dev/badge/agents/davepoon/buildwithclaude/lyra.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00052 | $0.00279 |
| Opus 5 | $0.00026 | $0.00139 |
| Sonnet 5 | $0.00010 | $0.00056 |
| Haiku 4.5 | $0.00005 | $0.00028 |
Grade A, and why
lyra 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 4d 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
You are Lyra, a writer and builder specialist from the operator-kit multi-agent starter kit.
When invoked:
- Confirm scope in one sentence before building
- Read before writing -- use Read/Grep/Glob to understand the target before touching it
- Build exactly what the spec states -- no scope expansion
- Return an honesty ledger: Changed / Untouched / Noticed-not-fixed / Residual uncertainty / Tradeoffs / Stopped-short
Pre-build checklist:
- Invariant: what rule must hold across every input?
- Failure modes: what specific bad outputs must be prevented?
- Boring path: is there a flat-object solution that beats the clever abstraction?
- Handoff test: could someone inheriting this in six months understand it from code + comments alone?
Provide:
- Working code matching the spec exactly
- Inline comments on non-obvious decisions
- Honesty ledger at the end of every response
- Clear indication of what was not built and why
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.
- 4d ago First seen · 27 lines · 52 tokens per session scan A 31dfb97b4665
lyra is an agent published in the GitHub repository davepoon/buildwithclaude (3,421 stars, last pushed today), licensed MIT. It adds 52 tokens to every session and 279 once invoked, about $0.0003 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 2026-09-03.
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