title: Module Overview¶

Module Overview¶

Each zerodep module is a self-contained single .py file that you can copy directly into your project. No pip install required at runtime.

Module Status¶

Module	Version	Last Updated
a2a	0.3.1	2026-04-27
acp	0.3.1	2026-04-27
aes	0.5.0	2026-04-20
ansi	0.3.0	2026-04-11
cache	0.2.4	2026-04-27
cdp	0.1.0	2026-05-02
config	0.3.1	2026-06-12
depdetect	0.4.3	2026-04-15
diff	0.3.1	2026-04-15
dotenv	0.3.1	2026-04-27
filelock	0.3.0	2026-04-27
frontmatter	0.3.0	2026-04-27
httpclient	0.4.2	2026-06-01
httpserver	0.1.1	2026-06-12
jsonrpc	0.3.0	2026-04-27
jsonschema	0.2.0	2026-05-11
jsonx	1.0.0	2026-06-12
llmstxt	0.1.1	2026-04-27
markdown	0.4.1	2026-04-27
multipart	0.1.0	2026-05-16
persistdict	0.4.1	2026-04-27
png	0.1.1	2026-04-27
prompt	0.2.0	2026-04-11
protobuf	0.4.4	2026-04-27
qr	0.3.3	2026-04-27
readability	0.2.0	2026-06-12
retry	0.3.0	2026-04-27
runner	0.3.1	2026-04-15
scheduler	0.3.1	2026-04-15
semver	0.4.1	2026-04-27
skills	0.4.2	2026-04-27
soup	0.6.0	2026-04-27
sparse_search	0.4.0	2026-04-27
sse	0.3.1	2026-04-15
structlog	0.3.0	2026-04-27
synctex	0.2.0	2026-05-02
tabulate	0.1.1	2026-04-15
toon	0.3.3	2026-04-27
useragent	0.1.0	2026-05-02
validate	0.5.0	2026-05-05
vcs	0.3.0	2026-04-11
websocket	0.1.0	2026-05-02
xml	0.3.1	2026-04-27
yaml	0.3.1	2026-04-27

All Modules¶

Web & Networking¶

Module	Description	Replaces	Benchmark Against
httpclient	Sync + async REST client with connection pooling, proxy, and auth	requests, httpx, urllib3, aiohttp (client)	`httpx`
sse	Server-Sent Events client with auto-reconnect	sseclient-py, aiohttp-sse-client, httpx-sse	`httpx-sse`
httpserver	Async HTTP server with decorator-based routing, streaming, and static files	flask (lightweight), microdot, bottle, starlette (basic), aiohttp (server)	`flask / microdot / bottle`
useragent	Lightweight Chrome/Edge User-Agent generator with Client Hints	fake-useragent, ua-generator, user-agents	`ua-generator`
websocket	RFC 6455 WebSocket client with sync + async support	websocket-client, websockets	`websockets`

Agent Protocols¶

Module	Description	Replaces	Benchmark Against
jsonrpc	JSON-RPC 2.0 protocol: data types, dispatcher, async transport	jsonrpclib, jsonrpcserver, python-jsonrpc	`jsonrpcserver`
a2a	Google A2A protocol: JSON-RPC 2.0, SSE streaming, task management	a2a-sdk, a2a-python	`a2a-python`
acp	Anthropic ACP protocol: JSON-RPC 2.0 over stdio, async client/agent	acp-python	`acp-python`
skills	Agent Skills runtime: parse, discover, manage, select skills	--	--
llmstxt	llms.txt parser and markdown URL candidate finder	--	--
cdp	Chrome DevTools Protocol client for headless browser automation	pychrome, pycdp	`websockets`

Serialization¶

Module	Description	Replaces	Benchmark Against
xml	XML ↔ dict converter with fault-tolerant parsing and LLM tag extraction	xmltodict	`xmltodict`
yaml	YAML parser and serializer (common subset)	PyYAML, ruamel.yaml (common subset)	`PyYAML`
jsonx	Extended JSON parser (JSONC + JSONL/NDJSON)	commentjson, jsonlines, ndjson	`commentjson`
toon	TOON (Token-Oriented Object Notation) encoder/decoder	toon-format	`toon_format`
frontmatter	Frontmatter parser and serializer (YAML/TOML/JSON)	python-frontmatter	`python-frontmatter`
protobuf	Proto3 encoder/decoder using Python dataclass schemas	protobuf (google), betterproto	`protobuf`
multipart	Multipart/form-data parser and encoder (RFC 7578)	python-multipart	`python-multipart`

Validation¶

Module	Description	Replaces	Benchmark Against
validate	Runtime TypedDict/dataclass validator with JSON Schema generation	pydantic (validation), cattrs, typeguard, marshmallow	`pydantic`
jsonschema	JSON Schema flattening & sanitization (`$ref`, `allOf`, `anyOf`)	jsonschema (LLM-specific), allof-merge	`allof-merge`
semver	PEP 440 version parser and comparator	packaging (Version), semver	`packaging`

Text & Search¶

Module	Description	Replaces	Benchmark Against
markdown	Markdown to HTML renderer (CommonMark subset + GFM tables)	mistune, markdown, markdown-it-py	`mistune`
soup	HTML parser with BeautifulSoup-like API (find, select, CSS selectors)	beautifulsoup4 (common subset)	`beautifulsoup4`
readability	Article content extractor ported from Mozilla Readability.js	readability-lxml, newspaper3k, trafilatura	`readability-lxml`
diff	Unified diff parser, patch apply/reverse, three-way merge	unidiff, patch	`unidiff`
sparse_search	BM25/BM25+/BM25L/BM25F + TF-IDF full-text search with Bayesian calibration, RRF fusion, MMR diversity	rank-bm25, bm25s, whoosh	`rank-bm25`
synctex	SyncTeX inverse-search parser (PDF position → source location)	--	--

Configuration¶

Module	Description	Replaces	Benchmark Against
dotenv	.env file parser (load_dotenv, dotenv_values)	python-dotenv	`python-dotenv`
config	Unified config loader (env vars, .env, JSON/YAML/TOML/INI)	python-decouple, dynaconf, environs, pydantic-settings	`python-decouple`

CLI & Terminal¶

Module	Description	Replaces	Benchmark Against
ansi	ANSI terminal styling: colors, attributes, detection, strip/visible_len	colorama, termcolor	--
tabulate	Table formatting with multiple output styles	tabulate, prettytable	`tabulate`
prompt	Interactive CLI prompts (confirm, select, text)	inquirer, questionary	`questionary`

Security¶

Module	Description	Replaces	Benchmark Against
aes	AES encryption: ECB, CBC, CTR, GCM modes (pure Python + OpenSSL via ctypes)	pycryptodome (AES), cryptography (AES)	`pycryptodome`

Image¶

Module	Description	Replaces	Benchmark Against
png	PNG/BMP image codec with matrix compression API	pypng, Pillow (PNG/BMP subset)	`Pillow`
qr	QR Code generation with terminal rendering	qrcode, segno	`qrcode`

Process & Execution¶

Module	Description	Replaces	Benchmark Against
retry	Decorator-based retry with configurable backoff strategies	tenacity, retrying, backoff	`tenacity`
scheduler	In-process task scheduler with cron, interval, one-shot triggers	APScheduler, schedule, croniter	`APScheduler`
runner	Structured subprocess execution with timeout escalation	sh, plumbum (partial)	--
filelock	Cross-platform advisory file lock (fcntl/msvcrt)	filelock	--

Storage¶

Module	Description	Replaces	Benchmark Against
cache	In-memory cache with TTL, LRU/LFU eviction, and async support	cachetools, diskcache (in-memory)	`cachetools`
persistdict	Persistent dict with pluggable backends (JSON, SQLite)	sqlitedict, diskcache (dict)	--

Dev Tools¶

Module	Description	Replaces	Benchmark Against
structlog	Structured logging with pretty console output	structlog, python-json-logger, loguru	`structlog`
vcs	Git/Hg/Jujutsu CLI wrapper (diff, status, log, blame)	GitPython, pygit2 (high-level)	--
depdetect	Dependency detection and verification	pipreqs (partial)	--

Inter-Module Dependencies¶

Most zerodep modules are fully standalone. The following modules depend on other zerodep modules:

graph LR
    a2a --> jsonrpc
    acp --> jsonrpc
    cdp --> websocket
    config --> dotenv
    config --> jsonx
    config --> yaml
    frontmatter --> yaml
    qr --> png
    readability --> soup
    skills --> frontmatter
    skills --> sparse_search
    sse --> httpclient
    vcs --> diff

When using the CLI tool, dependencies are resolved automatically. For manual installation, ensure all required modules are present.