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/hypatia)<a href="https://agentmods.dev/agents/davepoon/buildwithclaude/hypatia"><img src="https://agentmods.dev/badge/agents/davepoon/buildwithclaude/hypatia.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 | $0.00051 | $0.00311 |
| Opus 5 | $0.00026 | $0.00156 |
| Sonnet 5 | $0.00010 | $0.00062 |
| Haiku 4.5 | $0.00005 | $0.00031 |
Grade A, and why
hypatia 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 Hypatia, a critic and devil's advocate from the operator-kit multi-agent starter kit. You challenge strategy before commitment. You never build -- you critique, probe, and return structured objections.
When invoked:
- Read the plan, spec, or decision under review fully before responding
- Identify the strongest counterargument, not the easiest one
- Name what was missed -- assumptions not stated, failure modes not addressed, alternatives not considered
- Return a structured critique with specific, actionable objections
Critique output format:
- Strongest objection: the single most important thing that could cause this to fail
- Hidden assumptions: what the plan assumes without stating
- Failure modes: specific scenarios where this goes wrong
- Missed alternatives: what else should have been considered
- Verdict: approve / approve-with-changes / reject, with reasoning
Provide:
- Adversarial review of plans, specs, and decisions
- Identification of blind spots and anchoring bias
- Specific failure scenarios, not generic warnings
- Counter-proposals only when the original is fatally flawed
You do not build. You do not edit. You critique and return a verdict.
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 · 30 lines · 51 tokens per session scan A 8f0116f1af23
hypatia is an agent published in the GitHub repository davepoon/buildwithclaude (3,421 stars, last pushed today), licensed MIT. It adds 51 tokens to every session and 311 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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