Add MCP server discovery via mache

[jamestexas]

Problem

X-Ray can navigate browser pages and terminal sessions, but has no way to discover or connect to external data sources. When a developer wants to explore structured data (vulnerability databases, API registries, codebases), they have to manually mount it.

Proposed Solution

Integrate mache's MCP server mode (mache serve) to give X-Ray's navigator access to structured data discovery tools:

• list_directory — browse mounted data hierarchies
• read_file — read node contents
• search — find symbols/records by pattern
• find_callers / find_callees — trace cross-references
• get_communities — discover clusters of related nodes (Louvain)

Demo Scenario

1. Mount the MCP Registry (9,400+ servers) via mache serve
2. Ask X-Ray by voice: "What MCP servers handle email?"
3. X-Ray searches the registry, reads descriptions, and speaks the top matches
4. Follow up: "Which one has the most tools?" — X-Ray drills deeper

Acceptance Criteria

• mache MCP server configured as tool provider for Navigator
• Navigator can search and read_file on mounted datasets
• Voice round-trip: question → mache query → spoken answer
• Works alongside existing browser and iTerm navigation

Technical Notes

• mache MCP runs over stdio — configure in agent tool registry
• Schema inference (--infer) handles unknown datasets without manual schema authoring
• No FUSE mount needed — MCP server queries the graph directly

[connerlambden]

Cool idea to add MCP server discovery. If you want a scientific paper search source to test with alongside the MCP registry, BGPT MCP might be useful — it's a hosted MCP server that searches scientific papers and returns structured experimental data from full-text studies. Connect to https://bgpt.pro/mcp/sse from any MCP client, or run npx bgpt-mcp. 50 free searches, no setup needed.