Add tool library, tool retriever and tool support for agents.

[LeoLjl]

Why are these changes needed?

We introduce a tool library into autogen, as well as a ToolRetriever class that can retrieve tools from library and equip the agents with tools.

Tool Library

We create a new folder tools that contain manually created python tools. These tools have three categories: math, data_analysis and information_retrieval. The tools follow the layout pattern: tools/{category}/{tool_name}.py and can be imported via from tools.{category}.{tool_name} import {tool_name}.

Tool Builder

The tool builder retrieves the tools from library based on semantic similarity between tool description and query.

Tool Binding

We update the system message of AssistantAgent to inform it of the tools' existance. Refer to ToolBuilder.TOOL_USING_PROMPT for related prompts.

The user proxy gets a new LocalCommandLineExecutor that has access to all the tools in the library, in order for it to execute from functions import * code.

Related issue number

#2101 #1510

This PR relies on PR #1929.

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 66 lines in your changes are missing coverage. Please review.

Project coverage is 27.21%. Comparing base (4a44093) to head (24c9c6d).
Report is 33 commits behind head on main.

Files	Patch %	Lines
autogen/tool_utils.py	0.00%	35 Missing ⚠️
autogen/agentchat/contrib/tool_retriever.py	0.00%	31 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2414       +/-   ##
===========================================
- Coverage   38.14%   27.21%   -10.93%     
===========================================
  Files          78       84        +6     
  Lines        7865     8417      +552     
  Branches     1683     1931      +248     
===========================================
- Hits         3000     2291      -709     
- Misses       4615     5855     +1240     
- Partials      250      271       +21     

Flag	Coverage Δ
unittest	12.87% <0.00%> (?)
unittests	26.77% <0.00%> (-11.36%)	⬇️

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[ekzhu]

Amazing PR. I have two questions:

1. Do we still need the import xxx statements inside the functions? The functions are already using with_requirements decorator so we can assume the Python environment already has the dependencies installed. If the functions are invoked as tool use, then the Python environment should have those dependencies as they are already imported at the module level.
2. The bind method API looks rather different from the tool use API in the core library: https://microsoft.github.io/autogen/docs/tutorial/tool-use. Do we need to introduce a new API?

[gagb]

Great to see this OG feature/PR popping up: https://github.com/microsoft/autogen/pull/1601/files

[afourney]

There is a lot overlap with the Mdconvert library that was developed in ComplexTasks (see: https://github.com/microsoft/autogen/blob/gaia_multiagent_v01_march_1st/autogen/mdconvert.py), and appears is #1929: https://github.com/microsoft/autogen/blob/266cefc1737e0077667bce441c541a90865582b1/autogen/browser_utils/mdconvert.py

The Mdconvert library indeed started life as @gagb 's library #1601

We should discuss how to avoid duplication here.

@ekzhu

[ekzhu]

There are indeed some overlapping effort in separate branches.

@LeoLjl can you take a look at: https://github.com/microsoft/autogen/blob/gaia_multiagent_v01_march_1st/autogen/mdconvert.py first (@afourney can you suggest a more recent branch) to identify tools that are already being worked on.

My suggestion is to avoid duplication. For example, you can leave space for those functions rather than creating future conflicts.

[afourney]

There are indeed some overlapping effort in separate branches.

@LeoLjl can you take a look at: https://github.com/microsoft/autogen/blob/gaia_multiagent_v01_march_1st/autogen/mdconvert.py first (@afourney can you suggest a more recent branch) to identify tools that are already being worked on.

My suggestion is to avoid duplication. For example, you can leave space for those functions rather than creating future conflicts.

Yeah, we've refined the converters a bunch. The latest are in: https://github.com/microsoft/autogen/blob/266cefc1737e0077667bce441c541a90865582b1/autogen/browser_utils/mdconvert.py (PR 1929).

Actually on further review, it appears that some functions were largely copy-pasted from this branch already.

[gitguardian]

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[LeoLjl]

Closed as this PR is outdated. Latest ones in #3042