effect
01Skill Claude CodeCodex
Work with Effect v4 / effect-smol TypeScript code in this repo.
Skill Claude CodeCodex
Work with Effect v4 / effect-smol TypeScript code in this repo.
Skill Claude CodeCodex
Use when controlling browser pages with Playwright MCP in Lfcode; guides navigation, screenshots, interaction, and reuse of hidden or collapsed embedded side browser targets instead of the Electron app shell.
Skill Claude CodeCodex
A guide for creating and maintaining skills for Lfcode, including where to store them and which files each skill needs.
Skill Claude CodeCodex
A structured record of confirmed engineering mistakes, their root causes, and checks that prevent them from returning. It uses evidence from real application behavior, not just successful builds.
Skill Claude CodeCodex
Use when the user asks to generate, revise, configure, manage, insert, or export images with the Lfcode ImageMaker plugin or its supported image-generation APIs.
Skill Claude CodeCodex
Use when the user asks to audit accessibility, keyboard usability, semantics, contrast, focus behavior, or assistive-technology support in a UI. Inspect the actual rendered page and interaction states, report evidence-backed findings, and only implement fixes when explicitly requested.
Skill Claude CodeCodex
An API contract design guide for planning how software interfaces work before implementation. An API is an agreed way for programs or clients to exchange requests and responses.
Skill Claude CodeCodex
Use when the user asks to review or change an HTTP, RPC, event, CLI, or SDK API contract. Inspect routes, schemas, authorization, errors, compatibility, and consumers before editing, then verify request and response behavior with focused tests.
Skill Claude CodeCodex
Use when the user asks to design, compare, or revise a system architecture, component boundary, data flow, integration, or technical decision. Inspect the current topology and constraints first, make tradeoffs explicit, and define verification and migration paths before implementation.
Skill Claude CodeCodex
A guide for finding the first useful cause of a failed build, test, packaging, deployment, or continuous-integration job. Continuous integration, or CI, automatically checks code in a hosted pipeline.
Skill Claude CodeCodex
A code-review guide for examining a change and its surrounding behavior for bugs, regressions, security risks, compatibility problems, and missing tests. A code review checks proposed changes before they are accepted.
Skill Claude CodeCodex
Use when the user asks to understand, map, trace, or locate behavior in an unfamiliar repository. Inspect the actual code, configuration, runtime entrypoints, and tests before proposing changes; stay read-only unless a change is explicitly requested, and report evidence and remaining uncertainty.
Skill Claude CodeCodex
Use when the user asks to verify compatibility between an API provider and consumer, SDK and service, event producer and consumer, schema versions, or serialized data. Define and test the shared contract, including failures and compatibility rules, before changing either side.
Skill Claude CodeCodex
Use when the user asks to design, review, or execute a database schema change, data backfill, index change, or migration. Inspect the current schema and migration conventions first, plan safe rollout and recovery, and never perform destructive production changes without explicit authorization.
Skill Claude CodeCodex
Use for deep online research, multi-source investigation, evidence-backed comparisons, technology scouting, market or policy analysis, and sourced briefs. Trigger for /deep-research and requests to thoroughly investigate a topic using current web sources with local project context only as supporting evidence.
Skill Claude CodeCodex
Use when the user asks to upgrade, downgrade, replace, or reconcile a package dependency or lockfile. Inspect package-manager conventions and usage first, preserve unrelated dependency changes, and verify compatibility with focused tests and type checks before reporting completion.
Skill Claude CodeCodex
Use when the user asks to package, deploy, roll out, restart, or verify an application or service in a named environment. Inspect the real deployment path and target first, perform preflight and health checks, and require an explicit target and recovery plan for state-changing operations.
Skill Claude CodeCodex
Use when the user asks to create, update, review, or reorganize developer-facing documentation such as README files, architecture notes, runbooks, API guides, contribution instructions, migration guides, or troubleshooting material. Inspect the implemented behavior and repository conventions first, keep claims…
Skill Claude CodeCodex
Use when the user asks to create, edit, revise, convert, or quality-check a document. Inspect the input format, available local tools, style conventions, and requested output before changing content, then validate both structure and rendered appearance.
Skill Claude CodeCodex
Use when the user asks to create, improve, review, or repair end-to-end tests for a meaningful user workflow across the UI, runtime, backend, or installed application. Validate the real workflow at the highest useful boundary while keeping environments, accounts, and test data controlled.
Skill Claude CodeCodex
Use when the user asks to implement or modify an application feature end to end. Inspect the current behavior, repository rules, contracts, and tests before editing; keep changes scoped, preserve existing work, and validate the real user-facing or runtime path after implementation.
Skill Claude CodeCodex
Use when a test passes and fails intermittently, behaves differently by order, machine, runtime, timing, or retry, or when the user asks to reduce test flakiness. Gather repeatable evidence, isolate nondeterminism, and repair the causal dependency without weakening test intent.
Skill Claude CodeCodex
Use when the user explicitly asks to prepare, tag, publish, push, or audit a Git release. Inspect branch, worktree, version metadata, changelog, tests, and release artifacts first, obtain confirmation for irreversible release actions, and record a recovery path.
Skill Claude CodeCodex
Create, test, and maintain Lfcode user Hooks for automation, tool interception, session events, temporary rules, and persistent rules.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: