# Gleam

> Develop with Gleam using idiomatic patterns, TDD, and type-driven design. Activate when working with .gleam files, gleam.toml, or user mentions Gleam, BEAM, or Erlang.

- Skill: `majiayu000/gleam-3` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add majiayu000/gleam-3`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/gleam-3/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/majiayu000/gleam-3

---


# Gleam Development

Idiomatic Gleam with **type-driven design** and **TDD**.

## Workflow

```
1. MODEL    → Define domain types first (make illegal states unrepresentable)
2. RED      → Write failing test
3. GREEN    → Minimal implementation
4. REFACTOR → Clean up, use pipelines
5. RUN      → gleam test && gleam run
```

## Research

Use Context7 `query-docs` first, then gh as fallback. Routing table and example queries live in `reference.md`.

## CLI

```bash
gleam check                    # Fast type feedback (use often)
gleam test                     # Run tests
gleam run                      # Execute main
gleam format                   # Format all
gleam add pkg --dev            # Dev dependency
```

## References

- [reference.md](reference.md) - Research routing, patterns, anti-patterns