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+# AGENTS.md
+
+This document identifies and describes all agent and agent-like components in the [Lightning-AI/utilities](https://github.com/Lightning-AI/utilities) repository.
+Agents are defined as independently-triggerable components responsible for automating tasks, orchestrating workflows, or executing delegated utility operations.
+For each agent, its **name**, **purpose**, **functionality**, and **relative file location** are given.
+
+______________________________________________________________________
+
+## 1. GitHub Workflow Agents
+
+### Agent: check-schema
+
+- **Purpose**: Validates configuration or data schema on code pushes.
+- **Functionality**: Automatically runs schema checks as a job for every push, using centralized logic.
+- **Relative Location**: `.github/workflows/check-schema.yml`
+
+### Agent: check-docs
+
+- **Purpose**: Validates documentation build and style.
+- **Functionality**: Builds docs and runs documentation-specific checks to keep documentation healthy.
+- **Relative Location**: `.github/workflows/check-docs.yml`
+
+### Agent: check-typing
+
+- **Purpose**: Ensures static typing quality.
+- **Functionality**: Runs type checking to maintain type correctness.
+- **Relative Location**: `.github/workflows/check-typing.yml`
+
+### Agent: check-package
+
+- **Purpose**: Validates packaging.
+- **Functionality**: Builds the distribution and verifies artifacts integrity and metadata.
+- **Relative Location**: `.github/workflows/check-package.yml`
+
+### Agent: check-md-links
+
+- **Purpose**: Verifies Markdown links.
+- **Functionality**: Scans Markdown files for broken or redirected links.
+- **Relative Location**: `.github/workflows/check-md-links.yml`
+
+### Agent: check-precommit
+
+- **Purpose**: Enforces code style and quality gates.
+- **Functionality**: Runs configured pre-commit hooks (formatting, linting, etc.).
+- **Relative Location**: `.github/workflows/check-precommit.yml`
+
+### Agent: ci-use-checks
+
+- **Purpose**: Coordinates schema and code validation jobs for broad CI coverage.
+- **Functionality**: Calls multiple reusable workflows; acts as a top-level CI orchestrator.
+- **Relative Location**: `.github/workflows/ci-use-checks.yaml`
+
+### Agent: ci-testing
+
+- **Purpose**: Executes the test suite.
+- **Functionality**: Runs unit/integration tests across supported environments.
+- **Relative Location**: `.github/workflows/ci-testing.yml`
+
+### Agent: ci-cli
+
+- **Purpose**: Exercises CLI-related checks/tests.
+- **Functionality**: Validates CLI utilities and their expected behavior.
+- **Relative Location**: `.github/workflows/ci-cli.yml`
+
+### Agent: ci-scripts
+
+- **Purpose**: Validates repository scripts.
+- **Functionality**: Runs tests and checks over automation scripts in this repo.
+- **Relative Location**: `.github/workflows/ci-scripts.yml`
+
+### Agent: deploy-docs
+
+- **Purpose**: Publishes documentation.
+- **Functionality**: Builds and deploys docs to the chosen hosting target.
+- **Relative Location**: `.github/workflows/deploy-docs.yml`
+
+### Agent: release-pypi
+
+- **Purpose**: Publishes releases to PyPI.
+- **Functionality**: Builds and uploads distribution packages upon release conditions.
+- **Relative Location**: `.github/workflows/release-pypi.yml`
+
+### Agent: cleanup-caches
+
+- **Purpose**: Manually clears caches.
+- **Functionality**: Provides a job to purge caches when necessary.
+- **Relative Location**: `.github/workflows/cleanup-caches.yml`
+
+### Agent: cron-clear-cache
+
+- **Purpose**: Maintains clean build environments by scheduled cache clearance.
+- **Functionality**: Invokes Python/environment cache clearing on a weekly schedule to keep CI fast.
+- **Relative Location**: `.github/workflows/cron-clear-cache.yml`
+
+### Agent: label-pr
+
+- **Purpose**: Automatically labels pull requests.
+- **Functionality**: Applies labels to PRs based on rules to streamline triage.
+- **Relative Location**: `.github/workflows/label-pr.yml`
+
+### Agent: ci-rtfd
+
+- **Purpose**: Integrates with Read the Docs pipeline.
+- **Functionality**: Coordinates or triggers Read the Docs builds/checks.
+- **Relative Location**: `.github/workflows/ci-rtfd.yml`
+
+______________________________________________________________________
+
+## 2. GitHub Composite Actions
+
+### Agent: cache
+
+- **Purpose**: Facilitates caching of Python dependencies and environments.
+- **Functionality**: Stores and restores pip/conda caches to reduce CI overhead and redundant downloads.
+- **Relative Location**: `.github/actions/cache`
+
+### Agent: pip-list
+
+- **Purpose**: Provides environment visibility.
+- **Functionality**: Prints pip-installed packages and writes a summarized section to the GitHub step summary.
+- **Relative Location**: `.github/actions/pip-list`
+
+### Agent: pkg-create
+
+- **Purpose**: Builds and verifies distribution artifacts.
+- **Functionality**: Creates source/wheel distributions and checks them with strict validation.
+- **Relative Location**: `.github/actions/pkg-create`
+
+### Agent: pkg-install
+
+- **Purpose**: Installs the package in CI jobs.
+- **Functionality**: Installs the built package and its dependencies for downstream steps.
+- **Relative Location**: `.github/actions/pkg-install`
+
+### Agent: setup-python (standard GitHub Action)
+
+- **Purpose**: Sets up the specified Python version for CI jobs using the official GitHub Actions action.
+- **Functionality**: Ensures a clean Python install with exact version matching workflow needs by leveraging [`actions/setup-python`](https://github.com/actions/setup-python).
+- **Relative Location**: Referenced in `.github/workflows/*.yml` (not a custom agent or composite action in this repository)
+
+______________________________________________________________________
+
+## 3. CLI Utility Agents
+
+### Agent: lightning_utilities.cli.dependencies
+
+- **Purpose**: Automates manipulation of requirement files and dependency specifications.
+- **Functionality**: Provides utilities to prune packages, pin/replace minimal versions, and swap package names across requirement files and pyproject.
+- **Relative Location**: `src/lightning_utilities/cli/dependencies.py`
+
+### Agent: lightning_utilities.cli.__main__
+
+- **Purpose**: Entry point for CLI utilities.
+- **Functionality**: Enables invoking the CLI package via `python -m lightning_utilities.cli` and orchestrates subcommands.
+- **Relative Location**: `src/lightning_utilities/cli/__main__.py`
+
+______________________________________________________________________
+
+## 4. Core Python Utility Agents
+
+### Agent: module_available (from core.imports)
+
+- **Purpose**: Checks runtime availability of a named module or package.
+- **Functionality**: Returns Boolean status for importability; supports conditional execution patterns.
+- **Relative Location**: `src/lightning_utilities/core/imports.py`
+
+### Agent: RequirementCache
+
+- **Purpose**: Encapsulates package requirement availability and version checks.
+- **Functionality**: Determines if current environment meets module/package specs, with diagnostics.
+- **Relative Location**: `src/lightning_utilities/core/imports.py`
+
+### Agent: LazyModule
+
+- **Purpose**: Defers import of a Python module until actually accessed.
+- **Functionality**: Creates a proxy agent for cost-saving, lazy import pattern on first attribute look-up.
+- **Relative Location**: `src/lightning_utilities/core/imports.py`
+
+### Agent: requires (decorator)
+
+- **Purpose**: Ensures that decorated routines only execute if required modules/packages are present.
+- **Functionality**: Throws warning or error if preconditions not met, halting execution.
+- **Relative Location**: `src/lightning_utilities/core/imports.py`
+
+### Agent: apply_func
+
+- **Purpose**: Applies a function recursively to all items within complex/nested data collections.
+- **Functionality**: Recursively transforms dicts, lists, tuples with a callable, supporting agent-style iteration.
+- **Relative Location**: `src/lightning_utilities/core/apply_func.py`
+
+### Agent: packaging
+
+- **Purpose**: Parses, verifies and resolves package metadata and versions.
+- **Functionality**: Provides robust version and compatibility checking for automation and CI tasks.
+- **Relative Location**: `src/lightning_utilities/core/packaging.py`
+
+______________________________________________________________________
+
+## 5. Agent-like Scripts
+
+### Agent: (repository scripts)
+
+- **Purpose**: Various automation helpers (e.g., changelog, release, status).
+- **Functionality**: Targeted, self-contained scripts for specialized project tasks.
+- **Relative Location**: `scripts/` (per script)
+
+______________________________________________________________________
+
+## 6. Orchestration and Decision Agents
+
+### Agent pattern: Declarative workflow orchestration
+
+- **Purpose**: Enables CI jobs and composite actions to trigger, communicate, and conditionally execute based on context or outputs.
+- **Functionality**: Uses matrix, outputs, and conditional logic in YAML to link agent logic across jobs.
+- **Relative Location**: `.github/workflows/*.yml` (see usage of `needs`, `if`, `with`, outputs)
+
+### Agent pattern: Enum/decision-flow agents
+
+- **Purpose**: Encodes execution paths and decisions for agents.
+- **Functionality**: Provides enumerated constants used throughout automation logic.
+- **Relative Location**: `src/lightning_utilities/core/enums.py`
+
+______________________________________________________________________
+
+## AGENTS.md Conventions
+
+- Document each agent by **name**, **purpose**, **functionality**, and **location**.
+- Use flat Markdown headings for agent categories and individual agents.
+- Reference file locations relative to repository root.
+- Update and expand this file as new agents, utilities, CLI commands, or automation scripts are introduced.
+- Align all documentation with [standard AGENTS.md conventions](https://github.com/openai/agents.md), [Agent Rules](https://agent-rules.org/).
+- Keep instructions clear, explicit, and brief for both human collaborators and machine/agent consumers.
+
+______________________________________________________________________