chore: initial commit

Co-authored-by: Mic Neale <micn@squareup.com>
Co-authored-by: Bradley Axen <baxen@squareup.com>
Co-authored-by: Zaki Ali <zaki@squareup.com>
Co-authored-by: Salman Mohammed <smohammed@squareup.com>
Co-authored-by: Luke Alvoeiro <lalvoeiro@squareup.com>
Co-authored-by: Lily Delalande <ldelalande@squareup.com>
Co-authored-by: Andy Lane <alane@squareup.com>
Co-authored-by: Elena Zherdeva <ezherdeva@squareup.com>
Co-authored-by: John Weachock <jweachock@squareup.com>
Co-authored-by: Lifei Zhou <lifei@squareup.com>

.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# Ignore mkdocs site files generated locally for testing/validation, but generated
+# at buildtime in production
+site/
+docs/docs/notebooks*
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# Hermit
+.hermit
+
+# VSCode
+.vscode
+
+# Auto-generated mkdocs files
+docs/docs/reference
+
+# goose files 
+.goose

.ruff.toml

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+lint.select = ["F", "E", "ANN"]
+lint.ignore = ["ANN101"]
+exclude = [
+    "docs",
+]
+line-length = 120

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.8.0] - 2024-08-23
+
+### Added
+
+- Initial open source release 
+- Includes Exchange, Message, Tool, Moderator, and Provider
+- Supported providers: Anthropic, Bedrock, Databricks, OpenAI

CONTRIBUTING.md

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+# Contributing
+
+We welcome pull requests for general contributions. If you have a large new feature or any questions on how
+to develop a fix, we recommend you open an issue before starting.
+
+## Prerequisites
+
+*exchange* uses [uv][uv] for dependency management, and formats with [ruff][ruff]. 
+
+We provide a shortcut to standard commands using [just][just] in our `justfile`.
+
+## Developing
+
+Now that you have a local environment, you can make edits and run our tests. 
+
+```
+uv run pytest tests -m "not integration"
+```
+
+or, as a shortcut, 
+
+```
+just test
+```
+
+Generally if you are not developing a new provider, you can test most functionality through mocking and the normal
+test suite.
+
+However to ensure the providers work, we also have integration tests which actually require a credential and connect
+to the provider endpoints. Those can be run with
+
+```
+uv run pytest tests -m integration
+# or `just integration` 
+```
+
+
+[uv]: https://docs.astral.sh/uv/
+[ruff]: https://docs.astral.sh/ruff/
+[just]: https://github.com/casey/just