# Public Agent Skills

A collection of public, reusable agent skills, cheatsheets, and operational workflows for AI coding assistants and automation agents.

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## 📂 Skills Index

| Skill File | Scope / Topics Covered |
| :--- | :--- |
| **[`coding-dev.md`](./coding-dev.md)** | Standing rules for all code work: maximum linter/compiler strictness, never filtering build output, reuse-before-reinvent dependency ordering, file/function size limits, test & regression discipline, verification gates, scope control, commit hygiene, and honest reporting. |
| **[`cli-tooling.md`](./cli-tooling.md)** | Using command-line tools correctly: reading the help tree instead of guessing flags, preferring an existing CLI over an ad-hoc script, non-interactive invocation, machine-readable output formats, orienting on prior work before starting, script placement & symlinking, and care around destructive commands. |

### 🔤 Per-Language Rules ([`code-languages/`](./code-languages/))

| Language | Skill File | Highlights |
| :--- | :--- | :--- |
| **Rust** | [`rust.md`](./code-languages/rust.md) | `--workspace` clippy gate, `[workspace.lints]` single source of truth, no `unwrap`/`unsafe`, core-crate split |
| **TypeScript / JavaScript** | [`js-typescript.md`](./code-languages/js-typescript.md) | TS > JSDoc > plain JS, banned constructs table, React & hooks rules, resource lifecycle, sandbox boundaries |
| **Bash / Shell** | [`bash.md`](./code-languages/bash.md) | `set -euo pipefail`, shellcheck, no wait loops, destructive-command guards, build-gate structure |
| **Python** | [`python.md`](./code-languages/python.md) | `mypy --strict`, broad ruff rule set, asyncio task discipline, rate-limit queueing |
| **Go** | [`go.md`](./code-languages/go.md) | strict `golangci-lint` set, concrete types over `interface{}`, context everywhere, CGO-free static builds |
| **C# / .NET** | [`csharp-dotnet.md`](./code-languages/csharp-dotnet.md) | `TreatWarningsAsErrors`, nullable enabled, no `.Result`, trimming/single-file publish caveats, SDK shims |
| **C / C++** | [`c-cpp.md`](./code-languages/c-cpp.md) | full warning set + `-Werror`, sanitizers, RAII/Rule of Zero, target-based CMake, FFI ownership |

Each language file extends `coding-dev.md` rather than repeating it. A project's own
`AGENTS.md` / `CLAUDE.md` / `.rules` always overrides both.

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## ✍️ Skill Document Conventions

Skills in this repo follow the same structure as the private counterpart repo, so agents can load either interchangeably:

1. **YAML frontmatter** with `name` (kebab-case, matching the filename) and a `description` starting with *"Use this skill when …"* — the description is what an agent matches against to decide relevance, so it must enumerate concrete triggers.
2. **Numbered `##` sections**, sequential and unique, ending with a **Related Skills** section that cross-links sibling documents.
3. **CLI discovery over enumeration** — document the *non-obvious* workflows, gotchas, and constraints. For the routine surface, point at `<tool> --help` rather than transcribing flag lists that will go stale.
4. **No secrets inline** — reference the environment file that holds them (e.g. `~/.config/environment.d/…`), never the values themselves.
5. **Verify before documenting** — confirm hostnames, container names, and versions against the live system rather than carrying forward stale claims.

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## 🛠️ Usage Across AI Agents & Tools

These skill documents are compatible across agentic developer assistants and environments:
- **Claude Code / Claude Desktop**: Symlink or reference in project instructions or memory.
- **Codex**: Include in workspace instructions or agent configuration.
- **Antigravity**: Mount or reference from workspace `.agents/skills/` or global `~/.gemini/config/skills/`.
- **Other AI Tools (Cursor, OpenCode, Aider, Devin)**: Include as persistent project rules or context files.