Development
Skill
/diagram
Create and validate Mermaid diagrams. Use when creating, editing, or reviewing Mermaid diagrams in markdown files.
Claude Code
$ npx -y skills add bendrucker/claude --skill diagram --agent claude-code
Codex
$ npx skills add bendrucker/claude --skill diagram -a codex -y
Cursor
$ npx skills add bendrucker/claude --skill diagram -a cursor -y
Gemini CLI
$ npx skills add bendrucker/claude --skill diagram -a gemini-cli -y
GitHub Copilot
$ npx skills add bendrucker/claude --skill diagram -a github-copilot -y
OpenCode
$ npx skills add bendrucker/claude --skill diagram -a opencode -y
Windsurf
$ npx skills add bendrucker/claude --skill diagram -a windsurf -y
SKILL.md
diagram.SKILL.mdname: mermaid description: Create and validate Mermaid diagrams. Use when creating, editing, or reviewing Mermaid diagrams in markdown files. user-invocable: true
Mermaid Diagrams
Write Mermaid diagrams in markdown that parse cleanly. The work is done when the validator exits 0 on every file you touched:
bun ${CLAUDE_SKILL_DIR}/scripts/validate.ts <file.md>...It prints each failing block's line and parser message. Add `--json` for structured output.
Diagram Types
| Type | Directive | Use For | Reference | |------|-----------|---------|-----------| | Flowchart | `flowchart TB` | Process flows, decision trees, architecture | [flowchart.md](./references/flowchart.md) | | Sequence | `sequenceDiagram` | API interactions, message passing, protocols | [sequence.md](./references/sequence.md) | | State | `stateDiagram-v2` | State machines, lifecycles | [state.md](./references/state.md) | | ER | `erDiagram` | Database schemas, entity relationships | [er.md](./references/er.md) |
Write node and message labels in a few words, with full descriptions in the surrounding prose.
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TypeScript
Language
MIT
License
Last commit
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1882 skills12 agents1 MCP
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Questions about diagram.
- Which coding agents can use diagram?
- diagram installs in Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode and Windsurf with the skills CLI, using each agent's flag shown on this page. Flowy's auto-invocation, which fires a skill when your prompt matches, runs in Claude Code only.