# Improvements to Arcade TDK Error Handling
I tried my very best to not make any breaking changes in this PR. So,
you will notice various "Deprecation" notices throughout.
### Instructions for PR reviewers
1. Pull down this PR's branch
2. Pull down the Engine's tool error handling PR's branch
3. Update your installed arcadepy to have the following:
- In `arcadepy/resources/tools/tools.py`, if you want to test out
including stacktraces, then you need to update `ToolsResource.execute`
to accept a `include_error_stacktrace` argument and also include the
"include_error_stacktrace" argument to the POST to the Engine inside of
the function's execute method's body.
- In `arcadepy/types/execute_tool_response.py` add the following enum
```py
class ErrorKind(str, Enum):
"""Error kind that is comprised of
- the who (toolkit, tool, upstream)
- the when (load time, definition parsing time, runtime)
- the what (bad_definition, bad_input, bad_output, retry,
context_required, fatal, etc.)"""
TOOLKIT_LOAD_FAILED = "TOOLKIT_LOAD_FAILED"
TOOL_DEFINITION_BAD_DEFINITION = "TOOL_DEFINITION_BAD_DEFINITION"
TOOL_DEFINITION_BAD_INPUT_SCHEMA = "TOOL_DEFINITION_BAD_INPUT_SCHEMA"
TOOL_DEFINITION_BAD_OUTPUT_SCHEMA = "TOOL_DEFINITION_BAD_OUTPUT_SCHEMA"
TOOL_RUNTIME_BAD_INPUT_VALUE = "TOOL_RUNTIME_BAD_INPUT_VALUE"
TOOL_RUNTIME_BAD_OUTPUT_VALUE = "TOOL_RUNTIME_BAD_OUTPUT_VALUE"
TOOL_RUNTIME_RETRY = "TOOL_RUNTIME_RETRY"
TOOL_RUNTIME_CONTEXT_REQUIRED = "TOOL_RUNTIME_CONTEXT_REQUIRED"
TOOL_RUNTIME_FATAL = "TOOL_RUNTIME_FATAL"
UPSTREAM_RUNTIME_BAD_REQUEST = "UPSTREAM_RUNTIME_BAD_REQUEST"
UPSTREAM_RUNTIME_AUTH_ERROR = "UPSTREAM_RUNTIME_AUTH_ERROR"
UPSTREAM_RUNTIME_NOT_FOUND = "UPSTREAM_RUNTIME_NOT_FOUND"
UPSTREAM_RUNTIME_VALIDATION_ERROR = "UPSTREAM_RUNTIME_VALIDATION_ERROR"
UPSTREAM_RUNTIME_RATE_LIMIT = "UPSTREAM_RUNTIME_RATE_LIMIT"
UPSTREAM_RUNTIME_SERVER_ERROR = "UPSTREAM_RUNTIME_SERVER_ERROR"
UPSTREAM_RUNTIME_UNMAPPED = "UPSTREAM_RUNTIME_UNMAPPED"
UNKNOWN = "UNKNOWN"
```
- In `arcadepy/types/execute_tool_response.py` add the following fields
to OutputError:
```py
kind: ErrorKind
status_code: Optional[int] = None
stacktrace: Optional[str] = None
extra: Optional[dict[str, Any]] = None
```
### Example Client Usage
```py
# Example of handling an upstream rate limit
error = response.output.error
if error and error.kind == ErrorKind.UPSTREAM_RUNTIME_RATE_LIMIT:
sleep_time = error.retry_after_ms / 1000
time.sleep(sleep_time)
# and then execute again
```
```py
# Examples of determining what type of runtime error it is
error = response.output.error
if error:
is_retryable_error = error.kind == ErrorKind.TOOL_RUNTIME_RETRY
is_a_bug_in_the_tool = error.kind == ErrorKind.TOOL_RUNTIME_FATAL
is_additional_context_required = error.kind == ErrorKind.TOOL_RUNTIME_CONTEXT_REQUIRED
```
### Example Tool Usage
```py
# EXAMPLE 1 letting Arcade handle upstream error handling for you
reddit_client.post(params) # Arcade's httpx adapter will handle error handling for you!
# ------------------------------------
# EXAMPLE 2 handling upstream bad request yourself, but letting Arcade handle the rest
try:
reddit_client.post(params)
except httpx.HTTPStatusError as e:
if e.status_code == 400:
raise UpstreamError("My extra custom message) from e
raise
```
```py
# EXAMPLE 1 letting Arcade handle it for you
risky_element = my_risky_list[42] # Arcade will raise a FatalToolError for you
# ------------------------------------
# EXAMPLE 2 handling it yourself for extra flexibility
try:
risky_element = my_risky_list[42]
except IndexError as e:
raise FatalToolError("My extra custom message") from e
```
### Non-runtime Error Message Examples
Example ToolkitLoadError Messages:
```
- [TOOLKIT_LOAD_FAILED] ToolkitLoadError when loading toolkit 'sample_tool': Could not import module mock_module. Reason: Mock import error
- [TOOLKIT_LOAD_FAILED] ToolkitLoadError when loading toolkit 'test_toolkit': Tool 'ValidTool' in toolkit 'test_toolkit' already exists in the catalog.
```
Example ToolDefinitionError Messages
```
- [TOOL_DEFINITION_BAD_DEFINITION] ToolDefinitionError in definition of tool 'tool_missing_description': Tool 'tool_missing_description' is missing a description
- [TOOL_DEFINITION_BAD_DEFINITION] ToolDefinitionError in definition of tool 'tool_with_invalid_secret_type': Secret keys must be strings (error in tool ToolWithInvalidSecretType).
- [TOOL_DEFINITION_BAD_DEFINITION] ToolDefinitionError in definition of tool 'tool_with_empty_secret': Secrets must have a non-empty key (error in tool ToolWithEmptySecret).
- [TOOL_DEFINITION_BAD_DEFINITION] ToolDefinitionError in definition of tool 'tool_with_invalid_metadata_type': Metadata must be strings (error in tool ToolWithInvalidMetadataType).
- [TOOL_DEFINITION_BAD_DEFINITION] ToolDefinitionError in definition of tool 'tool_with_metadata_requiring_auth_without_auth': Tool ToolWithMetadataRequiringAuthWithoutAuth declares metadata key 'client_id', which requires that the tool has an auth requirement, but no auth requirement was provided. Please specify an auth requirement.
- [TOOL_DEFINITION_BAD_DEFINITION] ToolDefinitionError in definition of tool 'tool_with_empty_metadata': Metadata must have a non-empty key (error in tool ToolWithEmptyMetadata).
- [TOOL_DEFINITION_BAD_DEFINITION] ToolDefinitionError in definition of tool 'tool_with_unsupported_param_type': Unsupported parameter type: <class 'test_catalog.MyFancyTestClass'>
```
Example ToolInputSchemaError Messages
```
- [TOOL_DEFINITION_BAD_INPUT_SCHEMA] ToolInputSchemaError in definition of tool 'tool_with_missing_input_parameter_annotation': Parameter 'input_text' is missing a description
- [TOOL_DEFINITION_BAD_INPUT_SCHEMA] ToolInputSchemaError in definition of tool 'tool_with_no_type_annotation': Parameter param has no type annotation.
- [TOOL_DEFINITION_BAD_INPUT_SCHEMA] ToolInputSchemaError in definition of tool 'tool_with_invalid_param_name': Invalid parameter name: '123invalid' is not a valid identifier. Identifiers must start with a letter or underscore, and can only contain letters, digits, or underscores.
- [TOOL_DEFINITION_BAD_INPUT_SCHEMA] ToolInputSchemaError in definition of tool 'tool_with_too_many_annotations': Parameter param: Annotated[str, 'name', 'desc', 'extra'] has too many string annotations. Expected 0, 1, or 2, got 3.
- [TOOL_DEFINITION_BAD_INPUT_SCHEMA] ToolInputSchemaError in definition of tool 'tool_with_required_union_param': Parameter param is a union type. Only optional types are supported.
- [TOOL_DEFINITION_BAD_INPUT_SCHEMA] ToolInputSchemaError in definition of tool 'tool_with_non_callable_default_factory': Default factory for parameter param: Annotated[str, 'Parameter'] = FieldInfo(annotation=NoneType, required=False, default_factory=str) is not callable.
- [TOOL_DEFINITION_BAD_INPUT_SCHEMA] ToolInputSchemaError in definition of tool 'tool_with_multiple_tool_contexts': Only one ToolContext parameter is supported, but tool tool_with_multiple_tool_contexts has multiple.
```
Example ToolOutputSchemaError Messages
```
- [TOOL_DEFINITION_BAD_OUTPUT_SCHEMA] ToolOutputSchemaError in definition of tool 'tool_missing_return_type_hint': Tool 'ToolMissingReturnTypeHint' must have a return type
- [TOOL_DEFINITION_BAD_OUTPUT_SCHEMA] ToolOutputSchemaError in definition of tool 'tool_with_unsupported_output_type': Unsupported output type '<class 'test_catalog.MyFancyTestClass'>'. Only built-in Python types, TypedDicts, Pydantic models, and standard collections are supported as tool output types.
```
### Runtime Error Message Examples
Example Tool Runtime Error Messages
```
- [TOOL_RUNTIME_FATAL] FatalToolError during execution of tool 'get_posts_in_subreddit': list index out of range
- [TOOL_RUNTIME_CONTEXT_REQUIRED] ContextRequiredToolError during execution of tool 'get_posts_in_subreddit': Ambiguous username. Please provide a more specific username
- [TOOL_RUNTIME_RETRY] RetryableToolError during execution of tool 'get_posts_in_subreddit': Retry with subreddit=learnpython or subreddit=learnprogramming
```
Example Upstream Runtime Error Messages
```
- [UPSTREAM_RUNTIME_RATE_LIMIT] UpstreamRateLimitError during execution of tool 'get_posts_in_subreddit': 429 Client Error: Too Many Requests
- [UPSTREAM_RUNTIME_BAD_REQUEST] UpstreamError during execution of tool 'get_posts_in_subreddit': 400 Client Error: Bad request. Missing 'id' parameter.
- [UPSTREAM_RUNTIME_BAD_REQUEST] UpstreamError during execution of tool 'search_files': Upstream Google API error: Invalid value '-23'. Values must be within the range: [value: 1\n, value: 1000\n]
```
Improve Pydantic and Typedict support and add a bunch of tets.
1. Fixed the test failure where TypeDict was being serialized as a list
of tuples instead of a dict by:
- Adding proper handling for BaseModel instances in the output.py file
- Converting BaseModel results (from TypeDict conversion) to dicts using
model_dump()
- Handling lists containing BaseModel objects
2. Fixed None handling to ensure None results are converted to empty
strings as expected
3. Updated the schema.py to allow dict and list types in
ToolCallOutput.value
4. new tests
- TypeDict output execution tests
- Output factory tests
- Executor tests with TypeDict support
- Schema validation tests
The key changes were:
- In ``arcade_core/output.py``: Added BaseModel conversion logic in the
success method
- In ``arcade_core/schema.py``: Changed ToolCallOutput.value type from
list[str] to list to support complex types
TODO
- [ ] Confirm engine compatibility without changes made to engine
---------
Co-authored-by: Eric Gustin <eric@arcade.dev>
## Before
### Tool: ``GoogleNews.SearchNewsStories``
```python
@tool(requires_secrets=["SERP_API_KEY"])
async def search_news_stories(
context: ToolContext,
keywords: Annotated[
str,
"Keywords to search for news articles. E.g. 'Apple launches new iPhone'.",
],
country_code: Annotated[
CountryCode | None,
"2-character country code to search for news articles. "
"E.g. 'us' (United States). "
f"Defaults to '{DEFAULT_GOOGLE_NEWS_COUNTRY}'.",
] = None,
language_code: Annotated[
LanguageCode,
"2-character language code to search for news articles. E.g. 'en' (English). "
f"Defaults to '{DEFAULT_GOOGLE_NEWS_LANGUAGE}'.",
] = DEFAULT_GOOGLE_NEWS_LANGUAGE,
limit: Annotated[
int | None,
"Maximum number of news articles to return. Defaults to None "
"(returns all results found by the API).",
] = None,
) -> Annotated[dict[str, Any]]:
"""Search for news articles related to a given query."""
...
```
### Tool Definition: ``GoogleNews.SearchNewsStories``
```
{
"name": "SearchNewsStories",
"fully_qualified_name": "GoogleNews.SearchNewsStories",
"description": "Search for news articles related to a given query.",
"toolkit": {
"name": "GoogleNews",
"description": "Arcade.dev LLM tools for getting new via Google News",
"version": "2.0.0"
},
"input": {
"parameters": [
{
"name": "keywords",
"required": true,
"description": "Keywords to search for news articles. E.g. 'Apple launches new iPhone'.",
"value_schema": {
"val_type": "string",
"inner_val_type": null,
"enum": null,
},
"inferrable": true
},
{
"name": "country_code",
"required": false,
"description": "2-character country code to search for news articles. E.g. 'us' (United States). Defaults to 'None'.",
"value_schema": {
"val_type": "string",
"inner_val_type": null,
"enum": null,
},
"inferrable": true
},
{
"name": "language_code",
"required": false,
"description": "2-character language code to search for news articles. E.g. 'en' (English). Defaults to 'en'.",
"value_schema": {
"val_type": "string",
"inner_val_type": null,
"enum": null,
},
"inferrable": true
},
{
"name": "limit",
"required": false,
"description": "Maximum number of news articles to return. Defaults to None (returns all results found by the API).",
"value_schema": {
"val_type": "integer",
"inner_val_type": null,
"enum": null,
},
"inferrable": true
}
]
},
"output": {
"description": "News search results with article details.",
"available_modes": [
"value",
"error"
],
"value_schema": {
"val_type": "json"
}
},
"requirements": {
"authorization": null,
"secrets": [
{
"key": "serp_api_key"
}
],
"metadata": null
},
"deprecation_message": null
},
```
## After
### Enhanced Tool: ``GoogleNews.SearchNewsStories``
```python
"""Type definitions for Google News API responses and parameters."""
from typing_extensions import TypedDict
CountryCode = str
LanguageCode = str
class SearchNewsParams(TypedDict):
"""Input parameters for searching news articles."""
keywords: str
"""Search query terms to find relevant news articles \
(e.g., 'Apple launches new iPhone')."""
country_code: CountryCode | None
"""Optional 2-letter country code to filter news by region \
(e.g., 'us' for United States, 'uk' for United Kingdom)."""
language_code: LanguageCode | None
"""Optional 2-letter language code to filter news by language \
(e.g., 'en' for English, 'es' for Spanish)."""
limit: int | None
"""Optional maximum number of news articles to return. \
If not specified, returns all results from the API."""
class SourceInfo(TypedDict, total=False):
"""Information about the news source/publication."""
name: str
"""Name of the publication (e.g., 'CNN', 'BBC News', 'The New York Times')."""
icon: str
"""URL to the source's favicon or logo image."""
authors: list[str]
"""List of author names for the article, if available."""
class NewsResult(TypedDict, total=False):
"""Individual news article from the Google News API response."""
position: int
"""Ranking position of this result in the search results."""
title: str
"""Headline or title of the news article."""
link: str
"""Full URL to the original news article."""
source: SourceInfo
"""Information about the publication source."""
date: str
"""Publication date and time (e.g., '2 hours ago', 'Dec 15, 2023')."""
snippet: str
"""Brief excerpt or summary from the article content."""
thumbnail: str
"""URL to a high-resolution thumbnail image for the article."""
thumbnail_small: str
"""URL to a low-resolution thumbnail image for the article."""
story_token: str
"""Token for accessing full coverage of this news story across multiple sources."""
stories: list["NewsResult"]
"""Related news stories from other sources covering the same topic."""
highlight: dict
"""Additional highlighted information about the story."""
class SearchMetadata(TypedDict, total=False):
"""Metadata about the search request and processing."""
id: str
"""Unique identifier for this search request within SerpApi."""
status: str
"""Current processing status ('Processing', 'Success', or 'Error')."""
json_endpoint: str
"""URL to retrieve the JSON results for this search."""
created_at: str
"""Timestamp when the search request was created."""
processed_at: str
"""Timestamp when the search request was processed."""
google_news_url: str
"""Original Google News URL that would return these results."""
total_time_taken: float
"""Total time in seconds taken to process this search."""
class SearchParameters(TypedDict, total=False):
"""Parameters used for the search request."""
engine: str
"""Search engine used (always 'google_news' for this API)."""
q: str
"""Search query string."""
gl: str
"""Country code used for geographic filtering."""
hl: str
"""Language code used for language filtering."""
topic_token: str
"""Token for accessing specific news topics (e.g., 'World', 'Business', 'Technology')."""
publication_token: str
"""Token for accessing news from specific publishers."""
class MenuLink(TypedDict):
"""Navigation link for news categories or topics."""
title: str
"""Display text for the menu item (e.g., 'Technology', 'Sports', 'Business')."""
topic_token: str
"""Token to access this specific topic or category."""
serpapi_link: str
"""SerpApi URL to search within this topic."""
class TopStoriesLink(TypedDict):
"""Link to top stories section."""
topic_token: str
"""Token to access top stories."""
serpapi_link: str
"""SerpApi URL to retrieve top stories."""
class GoogleNewsResponse(TypedDict, total=False):
"""Complete response from the Google News API."""
search_metadata: SearchMetadata
"""Metadata about the search request and processing."""
search_parameters: SearchParameters
"""Parameters that were used for this search."""
news_results: list[NewsResult]
"""List of news articles matching the search criteria."""
menu_links: list[MenuLink]
"""Navigation links to different news categories and topics."""
top_stories_link: TopStoriesLink
"""Link to access top stories."""
title: str
"""Title of the page or topic being displayed."""
class SimplifiedNewsResult(TypedDict):
"""Simplified news article format for tool output."""
title: str
"""Headline of the news article."""
link: str
"""URL to the full article."""
source: str | None
"""Name of the publication source."""
date: str | None
"""When the article was published."""
snippet: str | None
"""Brief excerpt from the article."""
class SearchNewsOutput(TypedDict):
"""Output format for the search_news_stories tool."""
news_results: list[SimplifiedNewsResult]
"""List of news articles in simplified format."""
@tool(requires_secrets=["SERP_API_KEY"])
async def search_news_stories(
context: ToolContext,
keywords: Annotated[
str,
"Keywords to search for news articles. E.g. 'Apple launches new iPhone'.",
],
country_code: Annotated[
CountryCode | None,
"2-character country code to search for news articles. "
"E.g. 'us' (United States). "
f"Defaults to '{DEFAULT_GOOGLE_NEWS_COUNTRY}'.",
] = None,
language_code: Annotated[
LanguageCode,
"2-character language code to search for news articles. E.g. 'en' (English). "
f"Defaults to '{DEFAULT_GOOGLE_NEWS_LANGUAGE}'.",
] = DEFAULT_GOOGLE_NEWS_LANGUAGE,
limit: Annotated[
int | None,
"Maximum number of news articles to return. Defaults to None "
"(returns all results found by the API).",
] = None,
) -> Annotated[SearchNewsOutput, "News search results with article details."]:
"""Search for news articles related to a given query."""
...
```
### Enhanced Tool Definition: ``GoogleNews.SearchNewsStories``
```json
{
"name": "SearchNewsStories",
"fully_qualified_name": "GoogleNews.SearchNewsStories",
"description": "Search for news articles related to a given query.",
"toolkit": {
"name": "GoogleNews",
"description": "Arcade.dev LLM tools for getting new via Google News",
"version": "2.0.0"
},
"input": {
"parameters": [
{
"name": "keywords",
"required": true,
"description": "Keywords to search for news articles. E.g. 'Apple launches new iPhone'.",
"value_schema": {
"val_type": "string",
"inner_val_type": null,
"enum": null,
"properties": null,
"inner_properties": null,
"description": null
},
"inferrable": true
},
{
"name": "country_code",
"required": false,
"description": "2-character country code to search for news articles. E.g. 'us' (United States). Defaults to 'None'.",
"value_schema": {
"val_type": "string",
"inner_val_type": null,
"enum": null,
"properties": null,
"inner_properties": null,
"description": null
},
"inferrable": true
},
{
"name": "language_code",
"required": false,
"description": "2-character language code to search for news articles. E.g. 'en' (English). Defaults to 'en'.",
"value_schema": {
"val_type": "string",
"inner_val_type": null,
"enum": null,
"properties": null,
"inner_properties": null,
"description": null
},
"inferrable": true
},
{
"name": "limit",
"required": false,
"description": "Maximum number of news articles to return. Defaults to None (returns all results found by the API).",
"value_schema": {
"val_type": "integer",
"inner_val_type": null,
"enum": null,
"properties": null,
"inner_properties": null,
"description": null
},
"inferrable": true
}
]
},
"output": {
"description": "News search results with article details.",
"available_modes": [
"value",
"error"
],
"value_schema": {
"val_type": "json",
"inner_val_type": null,
"enum": null,
"properties": {
"news_results": {
"val_type": "array",
"inner_val_type": "json",
"enum": null,
"properties": null,
"inner_properties": {
"title": {
"val_type": "string",
"inner_val_type": null,
"enum": null,
"properties": null,
"inner_properties": null,
"description": "Headline of the news article."
},
"link": {
"val_type": "string",
"inner_val_type": null,
"enum": null,
"properties": null,
"inner_properties": null,
"description": "URL to the full article."
},
"source": {
"val_type": "string",
"inner_val_type": null,
"enum": null,
"properties": null,
"inner_properties": null,
"description": "Name of the publication source."
},
"date": {
"val_type": "string",
"inner_val_type": null,
"enum": null,
"properties": null,
"inner_properties": null,
"description": "When the article was published."
},
"snippet": {
"val_type": "string",
"inner_val_type": null,
"enum": null,
"properties": null,
"inner_properties": null,
"description": "Brief excerpt from the article."
}
},
"description": "List of news articles in simplified format."
}
},
"inner_properties": null,
"description": null
}
},
"requirements": {
"authorization": null,
"secrets": [
{
"key": "serp_api_key"
}
],
"metadata": null
},
"deprecation_message": null
},
```
---------
Co-authored-by: Eric Gustin <eric@arcade.dev>
## Summary
This PR removes the requirement that all toolkits must have the arcade_
prefix and introduces a more flexible toolkit discovery system using
Python entry points.
### 🏷️ Flexible Toolkit Naming
* Community toolkits: Only add arcade_ prefix when the user is in
arcade-ai/toolkits/ directory and explicitly chooses to create a
community contribution.
* External toolkits: No prefix requirement - developers can name their
toolkits however they want
* Toolkit names are now determined by user choice rather than enforced
automatically
### 🔍 Entry Point Discovery
* Added find_arcade_toolkits_from_entrypoints() method to discover
toolkits via entry points
* Entry point group: arcade_toolkits with name: toolkit_name
* Updated pyproject.toml template to include entry point configuration
* Entry point discovery takes precedence over prefix-based discovery for
deduplication
### 📦 Backward Compatibility
* Existing arcade_* prefixed toolkits continue to work via
find_arcade_toolkits_from_prefix()
find_all_arcade_toolkits() now combines both discovery methods
* Deduplication logic prefers entry point toolkits over prefix-based
ones when package names match
### 🛠️ `arcade new` Template Updates
* pyproject.toml template for `arcade new` now includes entry point
configuration: [project.entry-points.arcade_toolkits]
### 🔧 Minor Improvements
* Refactored _strip_arcade_prefix() into a separate method for
reusability
* Updated variable naming for clarity (community_toolkit →
is_community_toolkit)
### Benefits
* Developer Freedom: Toolkit developers are no longer forced to use the
arcade_ prefix. They are also no longer forced to use the package name
as the toolkit name.
* Cleaner Naming: External toolkits can use more natural names (e.g.,
my_company_toolkit instead of arcade_my_company_toolkit)
* Better Discovery: Entry points provide a more standard Python
mechanism for plugin discovery
* Flexible Distribution: Toolkits can be distributed with any package
name while still being discoverable
### Testing
* Added comprehensive tests for the new entry point functionality
* Tests cover edge cases like deduplication, error handling, and
backward compatibility
### Version Bumps
arcade-core: 2.0.0 → 2.1.0
arcade-ai: 2.0.5 → 2.1.0
This change makes the Arcade toolkit ecosystem more flexible and
developer-friendly while maintaining full backward compatibility with
existing toolkits.
---------
Co-authored-by: Mateo Torres <mateo@arcade.dev>
Say you are @shubcodes and running arcade on replit or vs codespaces.
Today, `arcade login` assumes that the browser you've opened for the
auth flow's "localhost" is the same that is running the `arcade login`
command. If you are running on one of these remote code execution
environments, that won't be true.
Usage:
```
arcade login --callback-host "https://replit.com:9999/path/to/my/codespace"
```
### 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>
Eric Gustin