What is pi-plugin-dev?

A development guide for building and publishing extensions for pi, a coding-agent harness. It covers extension structure, events, tools, commands, model providers, and the terminal interface.

Use it when working in a pi extension repository or adding features such as custom tools, slash commands, command-line options, authentication providers, or a terminal user interface.

It gives pi extension developers a reference for the many parts of an extension, reducing guesswork when building or debugging one.

How fredcamaral/drawers configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to fredcamaral/drawers. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/fredcamaral/drawers/main/.claude/skills/pi-plugin-dev/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/fredcamaral/drawers

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/fredcamaral/drawers/pi-plugin-dev/github.svg)](https://agentmods.dev/skills/fredcamaral/drawers/pi-plugin-dev)

Your own site

<a href="https://agentmods.dev/skills/fredcamaral/drawers/pi-plugin-dev"><img src="https://agentmods.dev/badge/skills/fredcamaral/drawers/pi-plugin-dev/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/fredcamaral/drawers/pi-plugin-dev"><img src="https://agentmods.dev/badge/skills/fredcamaral/drawers/pi-plugin-dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 293 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 4,832 The whole file, excluding the scripts and references it only reads on demand.

Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00293	$0.04832
Opus 5.5	$0.00117	$0.01933
Sonnet 5.5	$0.00059	$0.00966
Haiku 4.5	$0.00029	$0.00483

Measured 2mo ago against content hash d78024e2b91b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

pi-plugin-dev scanned grade C with 1 finding 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 2mo 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

or `~/.pi/agent/` extensions dir, or `pi -e`. Use when: "block rm -rf before it

.claude/skills/pi-plugin-dev/SKILL.md · 323 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

8 files 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.

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.

2mo ago First seen · 323 lines · 293 tokens per session scan C d78024e2b91b

Subscribe to this mod's changes

pi-plugin-dev is a skill published in the GitHub repository fredcamaral/drawers (7 stars, last pushed 25d ago), with no licence file. It adds 293 tokens to every session and 4,832 once invoked, about $0.0012 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Building agents

pi-plugin-dev next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
pi-plugin-devfredcamaral/drawers	Skill	7	25d ago	none	C	293	Claude Code
imagegenopenai/codex	Skill	134k	today	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	today	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	today	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	314k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	today	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	today	MIT	A	103	Claude Code

drawers: Skill for Claude Code

Borrowing it

Wrote this? Show the measurements

What it costs to keep this loaded

Grade C, and why

Recursive force deletehighDestructive command

The source is not reproduced here

No licence file

What ships with it

What this file has done since we first saw it

pi-plugin-dev compared with skills from other repositories