# PyZNN > PyZNN is the Python 3.12+ SDK for the Zenon Network of Momentum. It implements the stable language-neutral SDK specification with strict typed models, all canonical RPC calls, embedded contract builders, wallets, transactions, and deterministic offline conformance tests. Use the Markdown links below as the authoritative documentation. No public node is configured by default. Examples using `your-node.example` require an endpoint operated or trusted by the user. All integer token amounts are base units unless explicitly converted with `znn.amount`. ## Start here - [Installation and quick start](https://pyznn.0x3639.com/llms/installation.md): Install znn-sdk and connect the high-level SDK to an explicit Zenon endpoint. - [JSON-RPC clients](https://pyznn.0x3639.com/llms/json-rpc-client.md): Use the HTTP and persistent WebSocket transports, structured errors, and subscriptions. - [API facades and embedded contracts](https://pyznn.0x3639.com/llms/api.md): Call every canonical Zenon RPC and build embedded-contract account blocks. - [Models, primitives, amounts, and PoW](https://pyznn.0x3639.com/llms/models-and-primitives.md): Work with strict wire models, protocol primitives, exact amounts, and Zenon proof of work. - [Wallets, key files, and transactions](https://pyznn.0x3639.com/llms/wallet.md): Derive keys, encrypt interoperable key files, and prepare and publish account blocks. ## Examples and troubleshooting - [Example cookbook](https://pyznn.0x3639.com/llms/cookbook.md): Complete, copyable examples for connections, typed RPCs, subscriptions, wallets, key files, ABI calls, transactions, PoW, and offline tests. - [Errors and troubleshooting](https://pyznn.0x3639.com/llms/errors-and-troubleshooting.md): Exception taxonomy, retry guidance, validation failures, and remedies for HTTP, WebSocket, model, ABI, key-file, PoW, and transaction problems. ## Complete reference - [Complete API reference](https://pyznn.0x3639.com/llms/api-reference.md): Exact constructors, method signatures, wire calls, and result types for every API facade. - [Complete model reference](https://pyznn.0x3639.com/llms/model-reference.md): Wire keys, Python attributes, types, required fields, defaults, and enum values for every stable model. - [Stable SDK conformance](https://pyznn.0x3639.com/llms/conformance.md): Understand the stable specification coverage, offline vectors, manifest, and CI gates. ## Optional - [Contributing](https://pyznn.0x3639.com/llms/contributing.md): Set up development, run the offline conformance gates, and build the documentation site. - [LLM and agent access](https://pyznn.0x3639.com/llms/llm-access.md): Machine-readable documentation endpoints, authority rules, retrieval guidance, prompt patterns, and facts that code-generating agents must preserve. ## Full context - [Complete PyZNN documentation corpus](https://pyznn.0x3639.com/llms-full.txt): All authoritative pages concatenated in reading order.