JetBrains Releases Hexana 0.4, a WASM Analysis MCP for Claude

Hexana, developed by JetBrains, is an MCP (Model Context Protocol) server that provides Ground Truth based on actual bytes, instead of relying on source code guesses, when LLM agents analyze WebAssembly (WASM) binaries.

The key updates in the Hexana 0.4.0 release are as follows:

• Built an MCPB packaging pipeline: Introduced a build pipeline for platform-specific .mcpb bundles (including native runtime, tool metadata, and validation).
• Improved deployment convenience: Added releases.json to the release feed, allowing wrapper tools to find the latest version without hardcoding.
• Enhanced CLI functionality: The --allowed-root argument can now be used repeatedly, improving directory selection functionality.

Using this plugin, you can perform the following tasks within Claude Code:

• Summarize WASM modules (section structure, import/export counts, format metadata)
• List functions by name or index
• Map stack frames and function identification for crash analysis
• Inspect memory contracts, globals, and data segments