Stdlib Python Packages

stdlibs

What's in the Python stdlib

bindery-cli

Deterministic, epubcheck-gated EPUB repair with atomic Calibre library replacement, content auditing, and a Calibre import plugin.

frequenz-core

Core utilities to complement Python's standard library

unstd

stdlib-faithful accelerated replacements behind optional extras

task-checkpoint-mcp

MCP server adding checkpoint and resume to long agent tasks: roll back to any step, pick the work up in a new session, hand off to another machine. Works with Claude Code, Codex and other MCP clients. Pure Python stdlib, zero dependencies, never touches your git history.

x509kit

Pure-Python X.509 toolkit. Zero dependencies (stdlib only).

vir-tui

Curses menus with type-to-filter, a pannable pager, boxed prompts, a progress box, and ANSI formatters: the stdlib-only TUI layer of the VirInvictus Python toolchain. GPL-3.0-or-later; Python 3.14+.

raindrop-cli

Dependency-free command-line client for Raindrop.io and Pinboard: bookmarks, collections, tags, and highlights from the terminal, with two-way Raindrop<->Pinboard sync. Designed ANSI output for humans, --json for scripts and agents.

palestine

python DOM and SSR HTML rendering library

nx-ai-engineer

NX AI Engineer — a stdlib-only Developer Infrastructure Platform that organizes knowledge, context and execution to potentiate any AI model during software development. It never replaces the model.

auditagent-toolkit

Toolkit modular de auditoría técnica en Python (solo stdlib)

aioplus

Because asyncio.gather() is not enough!

nakedagent

A coding agent with zero runtime dependencies. Ollama-backed, stdlib-only Python.

dataclean-csv

Dependency-free Python CLI that cleans messy CSV files — normalizes headers, removes duplicates, fills missing values — and writes a JSON data-quality report. Stdlib only, no pandas.

t1-t2-protocol

MCP server for heterogeneous AI validation — T1 structured reasoning, T2 cross-model evaluation, and deterministic checksum. Python stdlib-only.

pywho

One command to explain your Python environment, trace imports, and detect shadows.

python-utils-rondomondo

A small, dependency-free Python 3.12 library of practical utilities for two domains that come up in almost every project: dates and money. The money module is built on top of Python's decimal.Decimal and covers the full lifecycle of a monetary value - converting raw input with to_money, rounding with either half-up or banker's convention, truncati

agentshield-spend

Stop runaway AI agents before they burn your budget. 7 composable spend rules, <1ms eval, pure Python 3.11 stdlib.

codechu-fmt

Stdlib-only human-readable formatters — durations, rates, sizes.

backlib

Backports for the Python standard library.

aiostdlib

Only the standard library... but asynchronous!

nda-review-cli

Agent-first NDA review, drafting, and two-party negotiation CLI. Deterministic rules; opt-in LLM (Anthropic/OpenAI/Ollama). Hash-chained negotiation state. Part of the eight-CLI contract-ops suite — cli.drbaher.com

pysnapdb

SnapDB — Extremely lightweight lightning-fast in-memory database for Python. Zero-copy reads, single-file, pure Python.

spoolctl

Crash-safe local shell job queue with SQLite-backed retries, output capture, and agent-friendly JSON contracts.