lit-diagram-drawer

82 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By wjgoarxiv/litgravity (GitHub) · coding · 167 stars · scanned at commit 53899d5

Draw an architecture, workflow, data-model or timeline diagram as editable SVG, check it, and export PNG. Use when a picture explains faster than prose.

Works with any agent that supports SKILL.md skills.

What this skill can do

Downloads and installs other software

The author does not mention this. It runs automatically when the plugin is installed.

Found in 9 places.

plugin/skills/lit-diagram-drawer/SKILL.md, line 132- Headless runs (`agy -p`) end when a command is refused and cannot install. Read `status --json` first. When `ready` is false and `run_command` is allowed, run
plugin/skills/lit-diagram-drawer/SKILL.md, line 167- **BLOCKED:** the renderer, browser, font or `lit-humanizer` detector is unavailable, or the first-use install failed. Give the error line and `npx @litfamily/
plugin/skills/lit-diagram-drawer/references/export.md, line 15Headless `agy -p` runs refuse `run_command` calls that need approval, and sandboxes may block the network. A failed first-use install is therefore a `BLOCKED:`

Show 6 more

plugin/skills/lit-diagram-drawer/references/failure-codes.md, line 64| `RENDERER_REQUIRED`, `CHROME_REQUIRED` | The renderer or browser is not ready | Report `BLOCKED:` with `npx @litfamily/litgravity runtime install diagram`; cl
plugin/skills/lit-diagram-drawer/references/playbooks.md, line 63Lead with the verdict (PASS, FAIL or BLOCKED). Then the editable source path and the exports, the type id, variant and canvas, material simplifications, and any
plugin/skills/lit-diagram-drawer/scripts/doctor.mjs, line 13check('renderer agent-browser >= 0.38.1 (pinned '+runtime.pinned+')',runtime.renderer.ready,runtime.renderer.ready?runtime.renderer.version+' ('+runtime.rendere
plugin/skills/lit-diagram-drawer/scripts/export.mjs, line 26try{renderer=ensureRenderer();const chromeState=ensureChrome(renderer.bin);if(!chromeState.ok){console.error("CHROME_REQUIRED "+chromeState.detail+"; pre-warm f
plugin/skills/lit-diagram-drawer/scripts/export.mjs, line 27catch(e){console.error("RENDERER_REQUIRED "+e.message+"; pre-warm from a terminal: npx @litfamily/litgravity runtime install diagram");process.exit(2);}
plugin/hooks/session-start.mjs, line 38parts.push(`Update: LitGravity ${latest} is available (installed ${version}). Mention it once if the user asks about LitGravity; the update command is \`npx @li

Runs commands on your computer

This is disclosed by the author in the skill's SKILL.md or README. It runs automatically when the plugin is installed. Expected for a coding skill.

Found in 14 places.

plugin/skills/lit-diagram-drawer/scripts/diagram-metrics.mjs, line 3import { spawnSync } from 'node:child_process';
plugin/skills/lit-diagram-drawer/scripts/diagram-metrics.mjs, line 205const result=spawnSync(process.execPath,[humanizer,'--json','-'],{input:visibleText,encoding:'utf8',maxBuffer:1024*1024});
plugin/skills/lit-diagram-drawer/scripts/doctor.mjs, line 5import { spawnSync } from 'node:child_process';

Show 11 more

plugin/skills/lit-diagram-drawer/scripts/verify-all.mjs, line 4import { spawnSync } from 'node:child_process';
plugin/lib/host-exec.mjs, line 13import { spawnSync } from 'node:child_process';
plugin/lib/host-exec.mjs, line 108return spawnSync(plan.command, plan.args, plan.shell ? { ...options, shell: true } : options);
plugin/hooks.json, line 6"command": "node ./hooks/session-start.mjs",
plugin/hooks.json, line 13"command": "node ./hooks/pre-invocation.mjs",
plugin/hooks.json, line 20"command": "node ./hooks/post-invocation.mjs",
plugin/hooks.json, line 27"command": "node ./hooks/stop.mjs",
plugin/hooks.json, line 37"command": "node ./hooks/pre-tool-use.mjs",
plugin/hooks.json, line 49"command": "node ./hooks/post-tool-use.mjs",
plugin/hooks/lib/rewind/collect.mjs, line 5import { execFileSync } from 'node:child_process';
plugin/hooks/lib/rewind/collect.mjs, line 63const defaultExec = (file, args, options) => execFileSync(file, args, { encoding: 'utf8', stdio: ['ignore', 'pipe', 'ignore'], ...options });

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'lit-diagram-drawer' ] || [ -L ~/.agents/skills/'lit-diagram-drawer' ]; then echo 'A skill folder named lit-diagram-drawer already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/wjgoarxiv/litgravity' "$d" && git -C "$d" checkout --quiet '53899d5885b11bc5b687f17c21aae0e380549874' -- 'plugin/skills/lit-diagram-drawer' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugin/skills/lit-diagram-drawer' ~/.agents/skills/'lit-diagram-drawer' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'lit-diagram-drawer' ~/.claude/skills/'lit-diagram-drawer' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

Badge for your README

The badge for wjgoarxiv/litgravity shows the score of its lowest-scoring skill.

SkillTrust badge for wjgoarxiv/litgravity

[![SkillTrust](https://zalavijaysinh.github.io/skilltrust/badges/wjgoarxiv/litgravity.svg)](https://zalavijaysinh.github.io/skilltrust/repos/wjgoarxiv/litgravity/)

Score history

Date	Version	Score
2026-11-10	`53899d5`	82
2026-11-07	`99d1012`	80