# rdar
`rdar` installs the `radar` command, a fast local repository router written in
Rust. The core project is currently private. This small, auditable launcher
downloads a stripped release from `https://radar.sanixdk.xyz`, verifies its
SHA-256 checksum, caches it per native version and platform, then forwards
arguments. Launcher release 0.5.1 installs the pinned radar 0.5.0 Linux x86_64
artifact. Other release targets stay disabled until their native builds pass
the same verification.
```bash
cargo install --locked rdar
radar --version
cd your-project
radar map
radar query "where is the auth boundary?" --source
```
## Measured results
- Live navigation input: 15,407 to 4,249 tokens, 72.4% lower.
- Live reference cost: $0.1555 to $0.0564, 63.7% lower.
- Accuracy: 20/21 to 21/21 in the locked live navigation matrix.
- Retrieval: expected source anchor in the top three for 40/40 questions.
- Generated 10,000-file query: 28.74 ms p95 with zero model calls.
Radar combines deterministic tree-sitter extraction, compact lexical
fingerprints, exact-symbol routing, confidence-based abstention, bounded
source-span verification, incremental content-addressed caches, and tiny
committed `MAP.md` routers. Maps and caches are derived navigation data; source
files remain authoritative.
Methods and installable release artifacts are published at
[radar.sanixdk.xyz](https://radar.sanixdk.xyz).