# Sem

> Entity-level code intelligence: semantic diff, impact analysis, blame, and context for AI agents

## Facts
- Page: https://tashan.sh/capability/pkg-ataraxy-labs-sem
- tashan id: pkg:@ataraxy-labs/sem
- Source: https://github.com/Ataraxy-Labs/sem
- npm: https://www.npmjs.com/package/@ataraxy-labs/sem
- Type: npm
- Category: devtools
- tashan score: 70.0 / 100
- Adoption: 49.0
- Upkeep: 71.0
- Freshness: 92.0
- Evidence coverage: 100% of the inputs this score can use
- Health: active
- Instruction depth: deep
- npm downloads: 3,188/week
- License: MIT OR Apache-2.0
- Official: no

## Install

```sh
claude mcp add sem -- npx -y @ataraxy-labs/sem
```

## Security audit
- Known advisories: 0
- Install-time script: `node ./scripts/postinstall.mjs`
- Build provenance: not attested

Permissions are read from DECLARED dependencies only. Nothing is executed, so an empty result means "nothing declared", never "nothing possible".

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Measured 2026-09-13 by tashan (https://tashan.sh) from public evidence. Scorer s5.