# Diff Language

> Diff Language

- Skill: `zedarvates/diff-language` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add zedarvates/diff-language`
- Raw SKILL.md: https://api.skillmd.com/api/skills/zedarvates/diff-language/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: zedarvates (https://skillmd.com/u/zedarvates)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/zedarvates/diff-language

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# Diff Language
Compact agent-native diff format for token-efficient code change descriptions.

**Trigger:** When generating diffs, fix reports, or audit findings.

**Format:** `!!+f:file.py:42:symbol:detail`
- Severity: !! (crit), ! (err), ~ (warn), . (info)
- Ops: +f (fix), -f (skip), +d (dead), +s (secret), +p (dup), +c (complex)

**Module:** `skills/diff_language`

**Savings:** 47-55% vs verbose markdown
**Roundtrip:** lossless parse + serialize