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 romiluz13/pi-agent-skills --skill pi-web-uigit clone --depth 1 https://github.com/romiluz13/pi-agent-skillsWrote 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/romiluz13/pi-agent-skills/pi-web-ui)<a href="https://agentmods.dev/skills/romiluz13/pi-agent-skills/pi-web-ui"><img src="https://agentmods.dev/badge/skills/romiluz13/pi-agent-skills/pi-web-ui/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/romiluz13/pi-agent-skills/pi-web-ui"><img src="https://agentmods.dev/badge/skills/romiluz13/pi-agent-skills/pi-web-ui.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00089 | $0.00392 |
| Opus 5 | $0.00044 | $0.00196 |
| Sonnet 5 | $0.00018 | $0.00078 |
| Haiku 4.5 | $0.00009 | $0.00039 |
Grade A, and why
pi-web-ui 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 9d 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
Pi web UI (@mariozechner/pi-web-ui)
Grounding
pi-mono/packages/web-ui/README.md— features, installation, Quick Start snippet, APIs referenced there.pi-mono/packages/web-ui/example/— runnable minimal app (README.md,package.json, entry source).- Supporting libraries:
pi-mono/packages/ai/README.mdandpi-mono/packages/agent/README.mdwhen wiring model + Agent as shown in web-ui README.
Invariants
- README documents stack (mini-lit, Tailwind v4) and integration shape; do not substitute other component frameworks without explicit user request and README cross-check.
Workflows
- Bootstrap: Follow README Quick Start imports (
ChatPanel, storage stores,setAppStorage,defaultConvertToLlm) exactly as inpi-mono/packages/web-ui/README.md. - Compare to CLI: CLI behavior lives in
pi-coding-agent; browser concerns stay in web-ui README — cite both paths when contrasting.
Anti-patterns
- Do not invent artifact or tool names not listed in
pi-mono/packages/web-ui/README.mdwithout openingpi-mono/packages/web-ui/src/tools/for the specific renderer.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 9d ago First seen · 27 lines · 0 tokens per session scan A 994dcf5a1a47
pi-web-ui is a skill published in the GitHub repository romiluz13/pi-agent-skills (18 stars, last pushed 4mo ago), licensed MIT. It adds 89 tokens to every session and 392 once invoked, about $0.0004 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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