This release includes many bugfixes, as well as support for detaching data sources from agents and addition of additional tool providers.

⚒️ Support for Composio, LangChain, and CrewAI tools

We've improve support for external tool providers - you can use external tools (Composio, LangChain, and CrewAI) with:

pip install 'letta[external-tools]'

• Support composio tools (example)
• Add tool-use examples for Langchain tools and CrewAI tools

What's Changed

• fix: patch recall error by @cpacker in https://github.com/cpacker/MemGPT/pull/1749
• fix: patch validation error on /messages endpoint by @cpacker in https://github.com/cpacker/MemGPT/pull/1750
• feat: add locust for testing user/connection scaling by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1742
• ci: disable assistants api workflow by @cpacker in https://github.com/cpacker/MemGPT/pull/1752
• fix: server memory leak by @cpacker in https://github.com/cpacker/MemGPT/pull/1751
• fix: hotfix for server test by @cpacker in https://github.com/cpacker/MemGPT/pull/1753
• fix: cleanup base agent typing on step(), from PR #1700 by @cpacker in https://github.com/cpacker/MemGPT/pull/1754
• feat: add support for user_id in header by @cpacker in https://github.com/cpacker/MemGPT/pull/1755
• refactor: clean up agent.step() by @cpacker in https://github.com/cpacker/MemGPT/pull/1756
• fix: fix DB session management to avoid connection overflow error by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1758
• feat: add organization endpoints and schemas by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1762
• fix: various fixes to get create agent REST API to work by @cpacker in https://github.com/cpacker/MemGPT/pull/1763
• feat: add DEFAULT_USER_ID and DEFAULT_ORG_ID for local usage by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1768
• chore: migrate package name to letta by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1775
• chore: Update README.md by @cpacker in https://github.com/cpacker/MemGPT/pull/1778
• chore: Update README.md by @cpacker in https://github.com/cpacker/MemGPT/pull/1779
• fix: fixed bug when existing agent state is loaded via cli by @ShaliniR8 in https://github.com/cpacker/MemGPT/pull/1783
• fix: various fixes for workflow tests by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1788
• fix: deprecate local embedding tests by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1789
• docs: patch readme by @cpacker in https://github.com/cpacker/MemGPT/pull/1790
• feat: allow jobs to be filtered by source_id by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1786
• feat: support detaching sources from agents by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1791
• docs: patch link by @cpacker in https://github.com/cpacker/MemGPT/pull/1797
• fix: use JSON schema name instead of tool name for loading from env by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1798
• fix: patch typos in notebooks by @cpacker in https://github.com/cpacker/MemGPT/pull/1803
• fix: remove usage of anon_clientid and migrate to DEFAULT_USER by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1805
• fix: Enable importing LangChain tools with arguments by @mattzh72 in https://github.com/cpacker/MemGPT/pull/1807
• feat: don't require tags to be specified for tool creation by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1806
• fix: minor patch to tool linking with JSON schema and Tool.name do not match by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1802
• docs: update main README by @cpacker in https://github.com/cpacker/MemGPT/pull/1804
• feat: add defaults to compose and .env.example by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1792
• chore: update static files by @4shub in https://github.com/cpacker/MemGPT/pull/1811
• docs: Finish writing example for LangChain tooling by @mattzh72 in https://github.com/cpacker/MemGPT/pull/1810
• chore: remove dead function loading code by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1795
• fix: Check that content is not None before setting to internal_monologue by @mattzh72 in https://github.com/cpacker/MemGPT/pull/1813
• feat: Adapt crewAI to also accept parameterized tools and add example by @mattzh72 in https://github.com/cpacker/MemGPT/pull/1817
• fix: remove function overrides for Block object by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1816
• feat: add health check route by @4shub in https://github.com/cpacker/MemGPT/pull/1822
• feat: Add integration with Composio tools by @mattzh72 in https://github.com/cpacker/MemGPT/pull/1820
• fix: Fix small benchmark bugs by @mattzh72 in https://github.com/cpacker/MemGPT/pull/1826
• chore: bump version 0.4.1 by @sarahwooders in https://github.com/cpacker/MemGPT/pull/1809

New Contributors

• @ShaliniR8 made their first contribution in https://github.com/cpacker/MemGPT/pull/1783

Full Changelog: https://github.com/cpacker/MemGPT/compare/0.4.0...0.4.1