On startup, the Genome engine scans your codebase and builds a graph - every file, symbol, and import edge - then ranks it. The rendered result, injected at the top of every prompt, is the Genome: what the agent actually sees.

The agent never wastes a turn grepping for "where does auth live" - it already sees the map.

What you see

The Genome appears in every prompt, looking like this:

src/services/auth/session.ts (→12)
  +SessionManager  Tracks active sessions, refresh tokens, expiry
  +SessionStore

+ - exported symbol
(→12) - blast radius: 12 files depend on this one
[NEW] - file changed recently
One-line summary after the name (when semantic summaries are on)

What makes it useful

Ranked by PageRank - files imported by lots of others rank higher.
Personalized per turn - files you just edited or read get boosted.
Git-aware - files that always change together get pulled in too.
Real-time - edits re-index immediately.
30+ languages - TypeScript, Python, Rust, Go, Java, Ruby, C/C++, Swift, Kotlin, and more.

Config

Everything runs out of the box. If you want to tune it:

{
  "genome": true,
  "semanticSummaries": "synthetic"
}

Field	Values
`genome`	`true` (default) or `false` to disable
`semanticSummaries`	`"synthetic"` (fast, code-derived, default), `"ast"`, `"llm"` (one-line LLM descriptions), `"off"`

/Genome opens the settings panel (the genome config keys below tune the engine that builds the map).

Skip the scan

For quick one-shot questions, skip the startup scan:

empryo --headless --no-genome "what's the version?"

Or set EMPRYO_NO_GENOME=1.