### Overview
Major restructuring from monolithic `arcade-ai` package to modular
library architecture with standardized uv-based dependency management.
### New Package Structure
- **`arcade-tdk`** - Lightweight toolkit development kit (core
decorators, auth)
- **`arcade-core`** - Core execution engine and catalog functionality
- **`arcade-serve`** - FastAPI/MCP server components
- **`arcade-ai`** - Meta package that includes CLI functionality.
Optionally include evals via the `evals` extra. Optionally include all
packages via the `all` extra.
### Key Benefits
- **Lighter Dependencies**: Toolkits now depend only on `arcade-tdk` (~2
deps) vs full `arcade-ai` (~30+ deps)
- **Faster Builds**: uv provides 10-100x faster dependency resolution
and installation
- **Better Modularity**: Clear separation of concerns, consumers import
only what they need
- **Standard Tooling**: Eliminates custom poetry scripts, uses standard
Python packaging
### Migration Impact
- All 20 toolkits converted from poetry → uv with `arcade-tdk`
dependencies plus `arcade-ai[evals]` and `arcade-serve` dev
dependencies. When developing locally, devs should install toolkits via
`make install-local`.
- Modern Python 3.10+ type hints throughout
- Standardized build system with hatchling backend
- Enhanced Makefile with robust toolkit management commands
- Removed `arcade dev` CLI command
- Reduce the number of files created by `arcade new` and add an option
to not generate a tests and evals folder.
This foundation enables faster development cycles and cleaner dependency
chains for the growing toolkit ecosystem.
### Todo After this PR is merged
- [ ] Post-merge workflow(s) (release & publish containers, etc)
- [ ] Release order plan. @EricGustin suggests releasing in the
following order:
1. `arcade-core` version 0.1.0
2. `arcade-serve` version 0.1.0 and `arcade-tdk` version 0.1.0
3. `arcade-ai` version 2.0.0
4. Patch release for all toolkits (all changes in toolkits are internal
refactors)
- [ ] [Update docs](https://github.com/ArcadeAI/docs/pull/318)
---------
Co-authored-by: Eric Gustin <eric@arcade.dev>
Co-authored-by: Eric Gustin <34000337+EricGustin@users.noreply.github.com>
## PR Description
Add the ability to mark a tool as deprecated and display the warning in
the user's runtime. This PR also lays the foundation for future work for
emitting other levels of logs (debug, info, etc) that occur during the
tool's execution.
NOTE: Updates to the Arcade Clients (Python and JS) still need to be
done before the deprecation warning is emitted, but this PR needs to be
merged before those updates!
Let's cross our fingers that we'll never need to deprecate
`@tool.deprecated`!
### Example
1. Mark your tool as deprecated
```python
from typing import Annotated
from arcade.sdk import tool
@tool.deprecated("Use the 'Math.AddInt' tool instead.") # order of decorators does not matter
@tool
def add(
a: Annotated[int, "The first number"], b: Annotated[int, "The second number"]
) -> Annotated[int, "The sum of the two numbers"]:
"""
Add two numbers together
"""
return a + b
```
2. Call the deprecated tool
```python
from arcadepy import Arcade
client = Arcade()
tool_input = {"a": 9001, "b": 42}
response = client.tools.execute(
tool_name="Math.Add",
input=tool_input,
user_id="me@example.com",
)
print(f"The result of adding {tool_input['a']} and {tool_input['b']} is: {response.output.value}")
```
3. Observe the DeprecationWarning:
```
❯ python examples/call_a_tool_directly.py
/Users/ericgustin/repos/Team/arcade-ai/examples/call_a_tool_directly.py:22: DeprecationWarning: 'Math.Add' is deprecated: Use the `Math.AddInt` tool instead.
response = client.tools.execute(
The result of adding 9001 and 42 is: 9043
```
This PR ensures that `arcade.core` does not show up anywhere in "user
space". This is crucial for helping developers understand what objects
are safe to use, and helps maintain a good developer experience.
Specific changes:
- `ToolAuthorizationContext` and `ToolContext` are now visible via
`arcade.sdk`
- `ToolCatalog` is now visible via `arcade.sdk`
- `Toolkit` is now visible via `arcade.sdk`
- `config` is now visible via `arcade.sdk.config`
This PR introduces the following changes:
- **Engine Environment Configuration**: Adds support for specifying an
environment variables file for the engine via the `arcade dev` CLI
command.
- **Configuration File Handling**: Refactors configuration file handling
in the CLI launcher to generalize logic for locating configuration
files.
- **Tool Execution Logging**: Enhances logging in `BaseActor` to include
execution duration and adjusts logging levels for better visibility.
- **Enhanced Tool Exception Handling**: Improves exception handling in
`ToolExecutor` and updates the `@tool` decorator to ensure proper
propagation and handling of exceptions raised during tool execution.
