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Reference for poly, the single-binary multi-language linter and formatter — per-language engines, the lint/fmt commands, poly.toml configuration, severity behavior, and the shared CI validation workflow. Load when linting or formatting code, configuring poly.toml, or wiring poly into CI.
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/xberg-io/agent-conventions --skill poly-lint-format命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
Canonical xberg.io brand, product catalog, docs-site (Astro Starlight + @xberg-io/docs-theme), alef badge, docs task commands, prose style, Google Analytics IDs, brand assets, and README-template policy. Load when writing READMEs or docs, editing docs-site config, adding the ecosystem block or alef badge, or touching brand/analytics wiring.
The shared Cargo feature-flag naming and semantics contract across xberg-io Rust libraries — the same flag names mean the same thing everywhere (otel, mcp/mcp-http, mimalloc/jemalloc, acceleration). Load when adding, renaming, or reviewing a crate's [features], or reconciling a library's flags with the rest of the stack.
The canonical contract for tracing as a first-class product observability surface across xberg-io Rust libraries and services — level semantics, span/field naming, instrumentation patterns, and how xberg-enterprise consumes library spans over OTLP. Load when adding or reviewing tracing instrumentation, designing spans/events, wiring a subscriber, or reconciling observability features.
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| name | poly-lint-format |
| description | Reference for poly, the single-binary multi-language linter and formatter — per-language engines, the lint/fmt commands, poly.toml configuration, severity behavior, and the shared CI validation workflow. Load when linting or formatting code, configuring poly.toml, or wiring poly into CI. |
Poly is a single-binary multi-language linter and formatter. It bundles language engines (ruff for Python, oxc for JS/TS/JSON, taplo for TOML, rumdl for Markdown) and delegates to native tools (cargo fmt, cargo clippy, golangci-lint, actionlint, shellcheck, shfmt) when present. Most repos need no extra toolchains. Configure via per-repo poly.toml.
| Scope | Engine(s) |
|---|---|
| Python | ruff (lint + format), pyrefly (type check) |
| JS/TS/JSON/CSS | oxc (lint + format) |
| TOML | taplo (lint + format) |
| Markdown | rumdl (format) |
| Rust | cargo fmt + cargo clippy (via cargo hook) |
| Go | golangci-lint |
| Java | checkstyle, maven verify |
| Ruby | rubocop (format + lint) |
| C# | dotnet format |
| PHP | php-cs-fixer, phpstan |
| Elixir | mix format, mix credo |
| R | styler, lintr |
| C/C++ | clang-format, cppcheck |
| Shell | shfmt, shellcheck |
| Git | gitfluff (commit message linting), ai-rulez-generate |
| GH Actions | actionlint |
| Helm/K8s | helm-lint, kubeconform |
poly lint .poly fmt --check .poly fmt --fix .poly lint --fix .Per-repo poly.toml defines linting and formatting rules:
[discovery] — exclude globs[lint.<lang>.<tool>] — select/ignore rules, settings like pydocstyle_convention, line_length[per-file-ignores] — file-specific exemptions[fmt.<lang>.<tool>] — formatter options[hooks.builtin] — git hook configurationCache directory .polylint/ is gitignored.
poly lint exits non-zero only on error-severity findings. Warnings are reported but do not fail CI.
Run linting and formatting validation in CI via the shared reusable workflow:
uses: xberg-io/actions/.github/workflows/reusable-validate.yml@v1
This workflow runs poly fmt --check . then poly lint . with optional inputs setup-rust and setup-python.
Always run poly fmt --check . and poly lint . after making changes to verify compliance.