diff --git a/.clinerules b/.clinerules
new file mode 100644
index 0000000..9f47cdc
--- /dev/null
+++ b/.clinerules
@@ -0,0 +1,35 @@
+# abc/.clinerules
+
+- Always read these files to understand the project and the layout:
+
+  - `README.md`
+  - always run this at the beginning of a project to understand the Git repo layout: `make tree`
+  - read files referenced in the above as appropriate for the task at hand
+
+- When working on a GitHub issue, follow standard best practices with a branch name like:
+  `issue-NN-{fix,feature}-description-$(date _%Y%m%d)
+
+- Use the `git` and `gh` CLIs where it makes sense.
+
+- When an update is complete, the software version can be updated in these five files:
+
+  - `abc_provider_anthropic/pyproject.toml`
+  - `pyproject.toml`
+  - `abc_cli/abc_generate.py`
+  - `README.md`
+  - `../getabc.sh/app/components/OpenSource.tsx`
+
+- Uninstall
+
+  ```bash
+  abc_setup --uninstall --no-prompt &&
+  pipx uninstall abc-cli
+  ```
+
+- Install for development (editable mode)
+
+  ```bash
+  pipx install -e . &&
+  pipx inject abc-cli -e ./abc_provider_anthropic &&
+  abc_setup --no-prompt
+  ```
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a28290b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,47 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Virtual Environment
+venv/
+env/
+ENV/
+.env/
+.venv/
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Project specific
+work/
+*.log
+.coverage
+htmlcov/
+.pytest_cache/
+.tox/
diff --git a/INSTALL.md b/INSTALL.md
index 8e0f3c3..3dd2a5f 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -7,7 +7,18 @@ This guide provides instructions for installing abc on your system using pipx.
 - Linux or macOS
 - Python 3.8 or higher
 - bash 4.4+, zsh 5.0+, or tcsh 6.0+
-- An API key for the Claude AI model from Anthropic
+- An API key for your chosen LLM provider (default: Anthropic)
+
+## LLM Providers
+
+abc uses a plugin system for LLM providers. The default installation includes:
+
+- Anthropic LLM provider (Claude)
+
+Additional providers can be installed using:
+```bash
+pipx inject abc-cli abc-provider-NAME
+```
 
 ## Easy Installation
 
@@ -80,15 +91,17 @@ This guide provides instructions for installing abc on your system using pipx.
 
    ```bash
    pipx install git+https://github.com/alestic/abc.git
+   pipx inject abc-cli abc-provider-anthropic@git+https://github.com/alestic/abc.git#subdirectory=abc_provider_anthropic
    abc_setup
    ```
 
-   Alternative:
+   Alternative (for development):
 
    ```bash
    git clone https://github.com/alestic/abc.git
    cd abc
-   pipx install .
+   pipx install -e .
+   pipx inject abc-cli -e ./abc_provider_anthropic
    abc_setup
    ```
 
diff --git a/abc_cli/__init__.py b/abc_cli/__init__.py
index e69de29..818993b 100644
--- a/abc_cli/__init__.py
+++ b/abc_cli/__init__.py
@@ -0,0 +1,4 @@
+"""abc-cli - AI Bash Command Generator."""
+from .llm_provider import LLMProvider
+
+__all__ = ['LLMProvider']
diff --git a/abc_cli/abc_generate.py b/abc_cli/abc_generate.py
index dfb1746..cf68146 100755
--- a/abc_cli/abc_generate.py
+++ b/abc_cli/abc_generate.py
@@ -21,10 +21,13 @@
 from typing import Dict
 import re
 import distro
+from importlib import metadata
 
-from .providers import LLMProvider
-from .providers.anthropic import AnthropicProvider
-from .providers.prompts import get_system_prompt
+from . import LLMProvider
+from .prompts import get_system_prompt
+
+# Entry point group for LLM providers
+PROVIDER_ENTRY_POINT = 'abc.llm_providers'
 
 VERSION: str = "# 2024.12.15"
 PROGRAM_NAME: str = "abc"
@@ -92,7 +95,23 @@ def get_provider(config: Dict[str, str]) -> LLMProvider:
     Currently defaults to Anthropic provider for backward compatibility.
     Will be enhanced to support provider selection in the future.
     """
-    return AnthropicProvider(config)
+    # For now, hardcode to anthropic for backward compatibility
+    provider_name = 'anthropic'
+
+    try:
+        # Find the provider entry point
+        eps = metadata.entry_points().select(group=PROVIDER_ENTRY_POINT)
+        provider_ep = next(ep for ep in eps if ep.name == provider_name)
+
+        # Load the provider class
+        provider_class = provider_ep.load()
+        return provider_class(config)
+
+    except (StopIteration, metadata.PackageNotFoundError):
+        raise ValueError(
+            f"Provider '{provider_name}' not found. "
+            f"Please install abc-provider-{provider_name} package."
+        )
 
 def process_generated_command(command: str) -> str:
     """Process the generated command based on its danger level."""
diff --git a/abc_cli/providers/__init__.py b/abc_cli/llm_provider.py
similarity index 95%
rename from abc_cli/providers/__init__.py
rename to abc_cli/llm_provider.py
index 29ad469..266172d 100644
--- a/abc_cli/providers/__init__.py
+++ b/abc_cli/llm_provider.py
@@ -1,4 +1,4 @@
-"""Provider interface for abc LLM integrations."""
+"""Core interface definition for abc LLM providers."""
 
 # NOTE! The `abc`/`ABC` module is part of the Python standard library and should not be confused with the `abc` command and `abc-cli` package.
 
diff --git a/abc_cli/providers/prompts.py b/abc_cli/prompts.py
similarity index 100%
rename from abc_cli/providers/prompts.py
rename to abc_cli/prompts.py
diff --git a/abc_provider_anthropic/README.md b/abc_provider_anthropic/README.md
new file mode 100644
index 0000000..800764a
--- /dev/null
+++ b/abc_provider_anthropic/README.md
@@ -0,0 +1,23 @@
+# abc-provider-anthropic
+
+Anthropic LLM provider for [abc-cli](https://github.com/alestic/abc).
+
+## Configuration
+
+In your `~/.abc.conf`:
+
+```ini
+[default]
+api_key = {ANTHROPIC_API_KEY}
+
+# Optional settings:
+model = claude-3-5-sonnet-20241022
+temperature = 0.0
+max_tokens = 1000
+```
+
+Get your Anthropic API key from the [Anthropic Console](https://console.anthropic.com/settings/keys).
+
+## License
+
+Apache 2.0 - See [LICENSE](../LICENSE)
diff --git a/abc_provider_anthropic/abc_provider_anthropic/__init__.py b/abc_provider_anthropic/abc_provider_anthropic/__init__.py
new file mode 100644
index 0000000..943d114
--- /dev/null
+++ b/abc_provider_anthropic/abc_provider_anthropic/__init__.py
@@ -0,0 +1,5 @@
+"""Anthropic LLM provider package."""
+
+from .llm_provider import AnthropicProvider
+
+__all__ = ['AnthropicProvider']
diff --git a/abc_cli/providers/anthropic.py b/abc_provider_anthropic/abc_provider_anthropic/llm_provider.py
similarity index 93%
rename from abc_cli/providers/anthropic.py
rename to abc_provider_anthropic/abc_provider_anthropic/llm_provider.py
index b8a304e..5eff919 100644
--- a/abc_cli/providers/anthropic.py
+++ b/abc_provider_anthropic/abc_provider_anthropic/llm_provider.py
@@ -3,7 +3,7 @@
 import anthropic
 from typing import Dict, Any
 
-from . import LLMProvider
+from abc_cli import LLMProvider
 
 DEFAULT_MODEL = 'claude-3-5-sonnet-20241022'
 DEFAULT_TEMPERATURE = 0.0
@@ -62,17 +62,17 @@ def get_config_schema(self) -> Dict:
                 "model": {
                     "type": "string",
                     "description": "Claude model to use",
-                    "default": "claude-3-5-sonnet-20241022"
+                    "default": DEFAULT_MODEL
                 },
                 "temperature": {
                     "type": "string",
                     "description": "Sampling temperature",
-                    "default": "0.0"
+                    "default": DEFAULT_TEMPERATURE
                 },
                 "max_tokens": {
                     "type": "string",
                     "description": "Maximum tokens in response",
-                    "default": "1000"
+                    "default": DEFAULT_MAX_TOKENS
                 }
             },
             "required": ["api_key"]
diff --git a/abc_provider_anthropic/pyproject.toml b/abc_provider_anthropic/pyproject.toml
new file mode 100644
index 0000000..2076f65
--- /dev/null
+++ b/abc_provider_anthropic/pyproject.toml
@@ -0,0 +1,21 @@
+[project]
+name = "abc-provider-anthropic"
+version = "2024.12.15"
+description = "Anthropic LLM provider for abc-cli"
+readme = "README.md"
+requires-python = ">=3.8"
+license = "Apache-2.0"
+authors = [
+    { name = "Claude 3.5 Sonnet", email = "" },
+    { name = "Eric Hammond", email = "" }
+]
+dependencies = [
+    "anthropic==0.40.0"
+]
+
+[project.entry-points."abc.llm_providers"]
+anthropic = "abc_provider_anthropic:AnthropicProvider"
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
diff --git a/install_from_github.sh b/install_from_github.sh
index c4a6f15..cb01eb9 100755
--- a/install_from_github.sh
+++ b/install_from_github.sh
@@ -170,6 +170,8 @@ main() {
         log "abc is already installed, attempting upgrade..."
         if [[ "$(prompt_user "About to upgrade abc via pipx. Continue?" "y")" = "yes" ]]; then
             pipx upgrade abc-cli || error "Failed to upgrade abc"
+            log "Upgrading Anthropic provider..."
+            pipx inject abc-cli abc-provider-anthropic@git+https://github.com/alestic/abc.git#subdirectory=abc_provider_anthropic $FORCE_OPTION || error "Failed to upgrade Anthropic provider"
         else
             log "Upgrade cancelled by user"
             exit 0
@@ -178,6 +180,8 @@ main() {
         log "Installing abc from GitHub..."
         if [[ "$(prompt_user "About to install abc via pipx. Continue?" "y")" = "yes" ]]; then
             pipx install git+https://github.com/alestic/abc.git $FORCE_OPTION || error "Failed to install abc via pipx"
+            log "Installing Anthropic provider..."
+            pipx inject abc-cli abc-provider-anthropic@git+https://github.com/alestic/abc.git#subdirectory=abc_provider_anthropic $FORCE_OPTION || error "Failed to install Anthropic provider"
         else
             log "Installation cancelled by user"
             exit 0
diff --git a/pyproject.toml b/pyproject.toml
index 704bee8..47d1395 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,6 @@ authors = [
     { name = "Eric Hammond", email = "" }
 ]
 dependencies = [
-    "anthropic==0.40.0",
     "readchar==4.1.0",
     "distro==1.8.0",
     "prompt_toolkit==3.0.47"
@@ -35,3 +34,6 @@ packages = ["abc_cli"]
 "abc_cli/abc.sh" = "abc_cli/abc.sh"
 "abc_cli/abc.tcsh" = "abc_cli/abc.tcsh"
 "abc_cli/abc.conf.template" = "abc_cli/abc.conf.template"
+
+[tool.hatch.metadata]
+allow-direct-references = true