Analyze Linux support archives (sosreport / supportconfig) for Azure VMs
directly from VS Code Chat. This extension bundles the RCA Tool MCP server
(supportfile_mcp) and the rca_cli analyzer and registers them with VS Code's
Model Context Protocol integration, so the tools appear automatically in
Agent mode.
What you get
Once installed, the server rca-tool is contributed automatically. In the Chat
view (Agent mode), the following tools become available under rca-tool:
list_parsers — list the available detectors/parsers
analyze_archive — run the analyzer over a support archive
summarize_findings — produce a high-level summary of detected issues
Example prompt:
Summarize the findings in path/to/sosreport.tar.xz
How it works
The extension ships a platform-specific build of two native binaries under
bin/:
supportfile_mcp — the stdio MCP server
rca_cli — the analyzer the server shells out to
On activation the extension registers an McpServerDefinitionProvider that
launches supportfile_mcp over stdio and points it at the bundled rca_cli
via the RCA_CLI_BIN environment variable.
Settings
Setting
Description
rcaTool.mcpServerPath
Absolute path to a supportfile_mcp binary to use instead of the bundled one.
rcaTool.rcaCliPath
Absolute path to an rca_cli binary to use instead of the bundled one.
Leave both empty to use the binaries shipped with the extension.
Platform support
Platform-specific VSIX packages are published for:
linux-x64, linux-arm64
darwin-arm64
win32-x64
The Marketplace serves the package matching your OS and architecture
automatically.
