Windows

• AMD64 (zip)
• ARM64 (zip)

Install

All Platforms (Shell Script)

curl -fsSL https://raw.githubusercontent.com/microsoft/wassette/main/install.sh | bash

This will detect your platform and install the latest wassette binary to your $PATH.

Major Highlights

🚀 Enhanced CLI Experience

• Improved Command Structure: Major CLI UX improvements with streamlined component, policy, and permission management commands (#141)
• Consolidated Transport Options: Simplified transport flags for better usability (#250)
• Performance Optimizations: Significant CLI performance improvements through lazy loading implementation (#274)

⚡ Multi-Component Performance

• Fast Startup with Lazy Loading: Revolutionary fast startup implementation with lazy and cached loading for WebAssembly components (#235)
• Parallel Component Loading: Components now load in parallel for dramatically improved performance (#123)
• Pre-instantiated Components: Use pre-instantiated components for optimal runtime performance (#124)
• Component Lifecycle Optimization: Major refactor of LifecycleManager for better resource management (#286)

🔍 Component Search Capabilities

• Component Discovery: New component search support to easily discover and explore available components (#236)
• Enhanced Documentation: Updated documentation for the new search-components tool (#241)

🌐 Streamable HTTP Protocol

• New Transport Protocol: Added support for Streamable HTTP transport (renamed from --http to --sse) (#100)
• Real-time Communication: Enables efficient real-time communication between components and clients

Additional Notable Features

Added

• Structured Tool Output Support: Implement structured result wrapper for tool output schemas (#304)
• Secret Management: Add simple per-component secret management system (#233)
• Memory Resource Management: Implement memory resource granting and revocation functionality for components (#172)
• Environment Variable Support: Add environment variable support with CLI options and file loading (#176)
• Kubernetes-style Resource Limits: Add resource limits with OnceLock caching optimization (#167)
• OCI Multi-layer Support: Enhanced OCI registry support with multi-layer artifact handling (#217)
• Cryptographic Signing: Add cryptographic signing for WASM OCI artifacts with digest-based security (#154)
• Revoke Commands: Add revoke commands and reset permission functionality with simplified storage revocation (#87)
• Architecture Diagram: Add comprehensive architecture diagram to documentation (#243)

Changed

• Wasmtime Update: Update Wasmtime dependencies from version 33 to 36 (#266)
• MCP Tool Support: Upgrade rmcp to v0.5.0 for native MCP Tool structured output support (#182)

Fixed

• Duplicate Tool Registration: Fix duplicate tool registration and normalize tool outputs (#280)
• Structured Output Handling: Fix structured output handling in component calls (#276)
• Windows Build: Fix build issues on Windows (#273)
• Python Exception Handling: Fix 'exec' method to capture and handle exceptions in eval-py (#275)
• Security Audit: Fix security audit issue by ignoring unmaintained fxhash dependency (#260)
• MCP Schema Compatibility: Update parse_tool_schema to ensure outputSchema compatibility with MCP outputSchema (#231)
• Spelling Fixes: Fix spelling by replacing "wasette" with "wassette" in configuration paths and documentation (#214)
• Component Loading: Add exdev-safe fallback for component loading (#109)
• Broken Links: Fix broken links in README.md to resolve 404 errors (#203)

Security

• Policy Environment Variables: Inject policy environment variables into WASI environment (#262)
• Security Scanning: Add security scanning job to GitHub Actions with cargo audit and cargo-deny (#152)

New Contributors!

• @thomastaylor312 made their first contribution in https://github.com/microsoft/wassette/pull/94
• @vsantele made their first contribution in https://github.com/microsoft/wassette/pull/104
• @rawkode made their first contribution in https://github.com/microsoft/wassette/pull/105
• @berkus made their first contribution in https://github.com/microsoft/wassette/pull/106
• @born-in-autumn made their first contribution in https://github.com/microsoft/wassette/pull/123
• @cataggar made their first contribution in https://github.com/microsoft/wassette/pull/273
• @Dueen made their first contribution in https://github.com/microsoft/wassette/pull/250
• @attackordie made their first contribution in https://github.com/microsoft/wassette/pull/217
• @mbrow137 made their first contribution in https://github.com/microsoft/wassette/pull/239
• @bowlofarugula made their first contribution in https://github.com/microsoft/wassette/pull/294

Full Changelog: https://github.com/microsoft/wassette/compare/v0.2.0...v0.3.0