vexp is an MCP server that gives AI coding agents structural awareness of your codebase. Instead of letting the agent read entire files, it pre-computes a dependency graph with tree-sitter and serves only the relevant code nodes — full source for what matters, signatures for everything else.
Benchmarked on FastAPI (800 files, 42 runs, Claude Sonnet 4.6): 58% cheaper, 22% faster, 63% fewer output tokens per task.
Also does cross-session memory — observations are linked to code graph nodes. When the code changes, stale context is auto-flagged.
Single Rust binary + SQLite. Zero cloud, zero telemetry. Works with any MCP agent (Claude Code, Cursor, Copilot, Windsurf, aider, etc).
Free tier, no account needed.
Benchmarked on FastAPI (800 files, 42 runs, Claude Sonnet 4.6): 58% cheaper, 22% faster, 63% fewer output tokens per task.
Also does cross-session memory — observations are linked to code graph nodes. When the code changes, stale context is auto-flagged.
Single Rust binary + SQLite. Zero cloud, zero telemetry. Works with any MCP agent (Claude Code, Cursor, Copilot, Windsurf, aider, etc).
Free tier, no account needed.