eslint-plugin-configs

eslint-plugin-configs is a skill for Claude Code, Codex from anchildress1/awesome-github-copilot. It costs 37 tokens per session (1,211 once invoked), scanned A, original, MIT.

A guide for creating or updating ESLint plugins, which add custom code checks to ESLint. It supports both ESLint 8's older configuration format and ESLint 9's flat configuration format.

In plain words
What is it for?
Use it to build plugin rules and compatible configuration exports, with examples showing how users consume them in ESLint 8 and 9.
Why use it?
It helps prevent configuration examples and plugin output from mixing rules that belong to different ESLint versions.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/anchildress1/awesome-github-copilot/eslint-plugin-configuring
Any agent
npx skills add anchildress1/awesome-github-copilot --skill eslint-plugin-configuring
Clone the repo
git clone --depth 1 https://github.com/anchildress1/awesome-github-copilot

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for eslint-plugin-configs

README.md
[![agentmods](https://agentmods.dev/badge/skills/anchildress1/awesome-github-copilot/eslint-plugin-configuring.svg)](https://agentmods.dev/skills/anchildress1/awesome-github-copilot/eslint-plugin-configuring)
Your own site
<a href="https://agentmods.dev/skills/anchildress1/awesome-github-copilot/eslint-plugin-configuring"><img src="https://agentmods.dev/badge/skills/anchildress1/awesome-github-copilot/eslint-plugin-configuring.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,211 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00037 $0.01211
Opus 5 $0.00018 $0.00606
Sonnet 5 $0.00007 $0.00242
Haiku 4.5 $0.00004 $0.00121

Measured 5d ago against content hash 06f7bb43c269, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

eslint-plugin-configs scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/eslint-plugin-configuring/SKILL.md · 239 lines

How it starts

The opening of the file, as written. The whole thing — 239 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role

You are the agent responsible for creating or modifying an ESLint plugin package that exports:

  • rules
  • configs (flat and/or legacy)
  • optional processors
  • recommended meta (name, version, namespace)

Your output is plugin source code plus correct consumer usage examples.

This Skill targets ESLint v8.x and v9.x behavior explicitly.


Operating Assumptions

ESLint Version Semantics

  • ESLint v9

    • Flat config is the default.
    • .eslintrc* is deprecated.
    • Legacy configs only apply if ESLINT_USE_FLAT_CONFIG=false.
  • ESLint v8

    • .eslintrc* is the common default.
    • Flat config is opt-in via eslint.config.js or ESLINT_USE_FLAT_CONFIG=true.

You must not misstate these behaviors.


Non-Goals (Hard Constraints)

  • Do not claim the plugin can force configuration usage.
  • Do not invent undocumented config resolution logic.
  • Do not mix flat and legacy config shapes.
  • Do not introduce ambiguous or colliding config names.

Required Inputs (Implicit)

Assume the following exist or are derivable:

  • PACKAGE_NAME (npm package name)
  • NAMESPACE (rule/config prefix)
  • RULES (map of ruleId -> rule implementation)
  • Optional desired config set (e.g. recommended, strict)

Mandatory Plugin Shape

The plugin must export a single object with:

  • meta
    • name
    • version
    • namespace
  • rules
  • configs
  • optional processors

Preferred export is ESM default export.


Meta Rules

  • meta.namespace is the canonical prefix for:
    • rules
    • configs
    • plugin registration
  • All rule references must use "<namespace>/<ruleId>".
  • Namespace consistency is mandatory across all outputs.

Config Export Strategies

Choose exactly one strategy and apply it consistently.

Strategy A — New Plugin (Recommended)

Use explicit separation:

  • Flat configs: flat/<configName>
  • Legacy configs: legacy-<configName>

This avoids collisions and makes intent unambiguous.

Read the full file on GitHub · 239 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 239 lines · 37 tokens per session scan A 06f7bb43c269

Subscribe to this mod's changes

eslint-plugin-configs is a skill published in the GitHub repository anchildress1/awesome-github-copilot (65 stars, last pushed yesterday), licensed MIT. It adds 37 tokens to every session and 1,211 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

GitHub Copilot Testing Patterns

Effective patterns for using GitHub Copilot to generate, refactor, and maintain test code including prompt engineering for test generation, Copilot Chat for debugging, inline suggestions for assertions, and workspace context optimization.

PramodDutta/qaskills · 48 tokens

mcp-server-dev

Use when the user asks to build an MCP server, create an MCP integration, wrap an API for AI agents, or expose tools via the Model Context Protocol. Guides through deployment model selection (remote HTTP, MCPB, local stdio), tool-design patterns, and framework choice before scaffolding code.

euxx/claude-skills-for-copilot · 65 tokens

conventions-improver

Audit and improve project conventions files (AGENTS.md, CLAUDE.md, GEMINI.md). Scans for all conventions files, evaluates quality against a scoring rubric, outputs a quality report, then makes targeted improvements with user approval. Use when asked to check, audit, update, or improve AGENTS.md or similar files.

euxx/claude-skills-for-copilot · 72 tokens

security-threat-model

Repository-grounded threat modeling that enumerates trust boundaries, assets, attacker capabilities, abuse paths, and mitigations, and writes a concise Markdown threat model. Trigger only when the user explicitly asks to threat model a codebase or path, enumerate threats/abuse paths, or perform AppSec threat modeling.…

euxx/claude-skills-for-copilot · 82 tokens

code-review

Multi-agent code review for local changes, files, or directories. Detects bugs, security issues, and conventions-file violations (AGENTS.md/CLAUDE.md/GEMINI.md).

euxx/claude-skills-for-copilot · 41 tokens

comment-analyzer

Analyzes code comments for accuracy, completeness, and long-term maintainability. Detects comment rot and misleading documentation. Use after adding or modifying code comments.

euxx/claude-skills-for-copilot · 35 tokens