A toolkit for reinforcement learning, where an agent learns by trying actions in an environment and receiving feedback. It supports parallel simulations, custom environments, multi-agent systems, and existing environments such as Gymnasium and PettingZoo.

Use it to build and train reinforcement-learning agents, create custom environments, run parallel simulations, and work with game-like benchmarks.

It provides the infrastructure needed to train reinforcement-learning systems efficiently across many simulated environments.

pufferlib — Skill for Claude Code and Codex by drshailesh88

Install

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.

Any agent

npx skills add drshailesh88/integrated_content_OS --skill pufferlib

Clone the repo

git clone --depth 1 https://github.com/drshailesh88/integrated_content_OS

Made for: Claude Code, Codex.

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/drshailesh88/integrated_content_os/pufferlib/github.svg)](https://agentmods.dev/skills/drshailesh88/integrated_content_os/pufferlib)

Your own site

<a href="https://agentmods.dev/skills/drshailesh88/integrated_content_os/pufferlib"><img src="https://agentmods.dev/badge/skills/drshailesh88/integrated_content_os/pufferlib/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/drshailesh88/integrated_content_os/pufferlib"><img src="https://agentmods.dev/badge/skills/drshailesh88/integrated_content_os/pufferlib.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 83 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,997 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. 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	$0.00083	$0.02997
Opus 5.5	$0.00033	$0.01199
Sonnet 5.5	$0.00017	$0.00599
Haiku 4.5	$0.00008	$0.00300

Measured 2mo ago against content hash 2614a6808c5a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pufferlib 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 2mo ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/env_template.py, scripts/train_template.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/scientific/pufferlib/SKILL.md · 431 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

7 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 · 431 lines · 83 tokens per session scan A 2614a6808c5a

Subscribe to this mod's changes

pufferlib is a skill published in the GitHub repository drshailesh88/integrated_content_OS (6 stars, last pushed 4mo ago), with no licence file. It adds 83 tokens to every session and 2,997 once invoked, about $0.0003 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 2026-09-03.

Data and AI Game development

pufferlib next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
pufferlibdrshailesh88/integrated_content_OS	Skill	6	4mo ago	none	A	83	Claude Code, Codex
cdf-autonomous-vehicle-dataset-generationNVIDIA/skills	Skill	3.9k	yesterday	Apache-2.0	A	66	Claude Code, Codex
pufferlibK-Dense-AI/scientific-agent-skills	Skill	56k	4d ago	MIT	C	68	Claude Code
dart-model-upgradedartsim/dart	Skill	1.2k	yesterday	BSD-2-Clause	A	42	Claude Code
mjlab-to-mjswanttktjmt/mjswan	Skill	364	yesterday	Apache-2.0	A	0	Claude Code
ai-game-world-designnirholas/three.ws	Skill	269	yesterday	Apache-2.0	A	88	Claude Code, Codex
PuerTS Agent Development GuideTencent/puerts	Skill	6.3k	3d ago	none	A	39	Claude Code, Codex