Improvements:

• Default DB on AgentOS: Add db to the AgentOS class. If populated, it propagates to all agents, teams and workflows without db. It is also used as tracing db.
• Deprecated enable_user_memories : Introduced update_memory_on_run for the same behavior.
• Knowledge config endpoint: Improved checking for available readers without needing instantiation of the reader classes. Reduced unnecessary warnings and improved response times.
• Unify dates format on OS API layer: Unify the format of all dates we send via the OS API. Everything is now a UTC datetime
• AgentOS Trailing Slash Handling: Add a TrailingSlashMiddleware that strips trailing slashes from request paths, all endpoints returns identical responses without 307 redirects.
• Pass instructions as is without XML tags:
  • Agent & Team: Instructions are now added directly to the system message without <instructions> tags by default
  • Added add_instruction_tags=True option to restore the previous behavior for users who prefer structured prompts

Bug Fixes:

• LanceDB: Fixed a bug for duplicate embeddings during async insert and upsert operations.
• Qdrant Async Search: Fixed async search methods which were preventing event loop blocking during concurrent async operations.
• CSV Reader: CSVReader and FieldLabeledCSVReader ignored encoding parameter for BytesIO inputs - always used hardcoded "utf-8" instead of self.encoding or "utf-8".
• PDF Reader: Fixed bug where empty string passwords ("") were incorrectly treated as None due to Python's falsy evaluation
• Openrouter with Gemini: Adds support for preserving Gemini's reasoning_details field when using OpenRouter, fixing multi-turn conversation issues.
• MongoDB Async Search: Fixed async_search() to use async_get_embedding() instead of blocking get_embedding() calls, preventing event loop blocking during concurrent async operations.
• Gemini vertex ai file upload: Fixed a bug where on trying to upload files to Gemini via Vertex AI, the API returned a 400 error.
• Skills System Prompt: Fixed an issue where agents attempted to call skill names directly as functions, resulting in "Function not found" errors.

Breaking changes:

• Remove all deprecated fields:
  • session_state, dependencies, user_id etc in tool functions and hooks where RunContext has replaced it
  • stream_intermediate_steps → stream_events
  • yield_run_response → yield_run_output
  • delegate_task_to_all_members removed from Team class
• Add WebSearchTools: Replacing DDG websearch tool with a Generic web search tool which will be the default on for any websearch related cookbooks & docs.
• Knowledge add_content() renamed to insert(): The add_content() method and its variants have been renamed to insert() insert_many Old method names are still supported, but all examples and docs will soon only reference the new methods.
• AgentOS tracing_db : tracing_db has been deprecated in favor of db parameter on the AgentOS.

What's Changed

• fix: gemini vertex ai file upload error by @Mustafa-Esoofally in https://github.com/agno-agi/agno/pull/5857
• chore: Demo script for windows by @VirusDumb in https://github.com/agno-agi/agno/pull/5965
• [fix] Add missing attributes to RemoteAgent for Team compatibility by @AhmedA-afk in https://github.com/agno-agi/agno/pull/5987
• fix: use async embedder in async search methods for qdrant by @uzaxirr in https://github.com/agno-agi/agno/pull/6002
• fix: use async embedder in MongoDB async_search to prevent event loop blocking by @uzaxirr in https://github.com/agno-agi/agno/pull/6003
• fix: prevent duplicate embedding in LanceDB insert() by @pengzy-cosmo in https://github.com/agno-agi/agno/pull/5919
• feat: Add direct GCS and external URL support for Gemini file inputs by @Mustafa-Esoofally in https://github.com/agno-agi/agno/pull/5997
• [feat] Add api_base_url parameter support to TavilyTools by @ormeilu in https://github.com/agno-agi/agno/pull/5962
• feat(cookbook): Revamp 01_demo with new impressive agents by @ashpreetbedi in https://github.com/agno-agi/agno/pull/6010
• fix: add TrailingSlashMiddleware to normalize URL paths by @uzaxirr in https://github.com/agno-agi/agno/pull/5985
• fix: Allow empty string passwords for PDF decryption by @Mustafa-Esoofally in https://github.com/agno-agi/agno/pull/6053
• fix: clarify that skill names are not callable functions by @ysolanky in https://github.com/agno-agi/agno/pull/6062
• feat: v2.4.0 by @kausmeows in https://github.com/agno-agi/agno/pull/5818
• fix: Update failing integration test prompt by @willemcdejongh in https://github.com/agno-agi/agno/pull/6074
• feat: merge v2.4.0 with cookbook refactoring by @ashpreetbedi in https://github.com/agno-agi/agno/pull/6042
• fix: preserve Router client across copies for background tasks by @ysolanky in https://github.com/agno-agi/agno/pull/6064
• fix: correct openai-agents install instruction by @harshsinha03 in https://github.com/agno-agi/agno/pull/6076
• chore: Release 2.4.0 by @kausmeows in https://github.com/agno-agi/agno/pull/6066

New Contributors

• @AhmedA-afk made their first contribution in https://github.com/agno-agi/agno/pull/5987
• @pengzy-cosmo made their first contribution in https://github.com/agno-agi/agno/pull/5919
• @ormeilu made their first contribution in https://github.com/agno-agi/agno/pull/5962

Full Changelog: https://github.com/agno-agi/agno/compare/v2.3.26...v2.4.0