zlayer-sdk 0.12.9

ZLayer Plugin Development Kit for Python

ZLayer Python SDK

Plugin Development Kit for building WASM plugins in Python targeting ZLayer.

Requirements

• Python 3.11+
• componentize-py for WASM compilation

Installation

# Using uv (recommended)
uv add zlayer-sdk

# Or with pip
pip install zlayer-sdk

Development Setup

# Clone and install in development mode
cd clients/zlayer-sdk/python
uv sync --all-extras

# Install componentize-py for WASM compilation
uv add --dev componentize-py

Usage

Basic Plugin Structure

from zlayer import kv, log

def handle_request(request: bytes) -> bytes:
    """Plugin entry point called by ZLayer runtime."""
    # Access key-value storage
    value = kv.get("my-key")

    # Log messages to host
    log.info("Processing request")

    # Return response
    return b"OK"

Building WASM Component

# Generate WIT bindings and compile to WASM
componentize-py -d ../../wit -w zlayer-plugin componentize my_plugin -o my_plugin.wasm

Available Host Capabilities

The SDK provides access to ZLayer host functions:

• kv - Key-value storage operations
• log - Structured logging
• http - Outbound HTTP requests
• config - Plugin configuration access

Project Structure

zlayer/
  __init__.py      # Package root with version
  py.typed         # PEP 561 type marker
examples/
  .gitkeep         # Example plugins (coming soon)

Type Checking

This package is fully typed and includes a py.typed marker for PEP 561 compliance.

# Run type checks
uv run mypy zlayer/

License

MIT