Interactively add tools with agentstack tools add if no tool_name is passed.

Repeatedly add tools to different agents without reinstalling all supporting tools.
Bugfix: Prevent duplicate tools from being added to the same agent.

Author: tcdent

README.md

@@ -81,7 +81,7 @@ A list of all tools can be found [on our docs](https://docs.agentstack.sh/tools/
 Adding tools is as simple as
 
 ```bash
-agentstack tools add <tool_name>
+agentstack tools add
 ```
 
 ## Running Your Agent

agentstack/cli/__init__.py

@@ -1,2 +1,3 @@
-from .cli import init_project_builder, list_tools, configure_default_model, export_template
+from .cli import init_project_builder, configure_default_model, export_template
+from .tools import list_tools, add_tool
 from .run import run_project

agentstack/cli/cli.py

@@ -6,8 +6,6 @@
 
 import json
 import shutil
-import itertools
-
 from art import text2art
 import inquirer
 from cookiecutter.main import cookiecutter
@@ -22,7 +20,6 @@
 from agentstack import conf
 from agentstack.conf import ConfigFile
 from agentstack.utils import get_package_path
-from agentstack.tools import get_all_tools
 from agentstack.generation.files import ProjectFile
 from agentstack import frameworks
 from agentstack import generation
@@ -440,25 +437,6 @@ def insert_template(
     )
 
 
-def list_tools():
-    # Display the tools
-    tools = get_all_tools()
-    curr_category = None
-
-    print("\n\nAvailable AgentStack Tools:")
-    for category, tools in itertools.groupby(tools, lambda x: x.category):
-        if curr_category != category:
-            print(f"\n{category}:")
-            curr_category = category
-        for tool in tools:
-            print("  - ", end='')
-            print(term_color(f"{tool.name}", 'blue'), end='')
-            print(f": {tool.url if tool.url else 'AgentStack default tool'}")
-
-    print("\n\n✨ Add a tool with: agentstack tools add <tool_name>")
-    print("   https://docs.agentstack.sh/tools/core")
-
-
 def export_template(output_filename: str):
     """
     Export the current project as a template.

agentstack/cli/tools.py

@@ -0,0 +1,69 @@
+from typing import Optional
+import itertools
+import inquirer
+from agentstack.utils import term_color
+from agentstack import generation
+from agentstack.tools import get_all_tools
+from agentstack.agents import get_all_agents
+
+
+def list_tools():
+    """
+    List all available tools by category.
+    """
+    tools = get_all_tools()
+    curr_category = None
+
+    print("\n\nAvailable AgentStack Tools:")
+    for category, tools in itertools.groupby(tools, lambda x: x.category):
+        if curr_category != category:
+            print(f"\n{category}:")
+            curr_category = category
+        for tool in tools:
+            print("  - ", end='')
+            print(term_color(f"{tool.name}", 'blue'), end='')
+            print(f": {tool.url if tool.url else 'AgentStack default tool'}")
+
+    print("\n\n✨ Add a tool with: agentstack tools add <tool_name>")
+    print("   https://docs.agentstack.sh/tools/core")
+
+
+def add_tool(tool_name: Optional[str], agents=Optional[list[str]]):
+    """
+    Add a tool to the user's project.
+    If no tool name is provided:
+        - prompt the user to select a tool
+        - prompt the user to select one or more agents
+    If a tool name is provided:
+        - add the tool to the user's project
+        - add the tool to the specified agents or all agents if none are specified
+    """
+    if not tool_name:
+        # ask the user for the tool name
+        tools_list = [
+            inquirer.List(
+                "tool_name",
+                message="Select a tool to add to your project",
+                choices=[tool.name for tool in get_all_tools()],
+            )
+        ]
+        try:
+            tool_name = inquirer.prompt(tools_list)['tool_name']
+        except TypeError:
+            return  # user cancelled the prompt
+
+        # ask the user for the agents to add the tool to
+        agents_list = [
+            inquirer.Checkbox(
+                "agents",
+                message="Select which agents to make the tool available to",
+                choices=[agent.name for agent in get_all_agents()],
+            )
+        ]
+        try:
+            agents = inquirer.prompt(agents_list)['agents']
+        except TypeError:
+            return  # user cancelled the prompt
+
+    assert tool_name  # appease type checker
+    generation.add_tool(tool_name, agents=agents)

agentstack/frameworks/crewai.py

@@ -152,17 +152,27 @@ def add_agent_tools(self, agent_name: str, tool: ToolConfig):
         if method is None:
             raise ValidationError(f"`@agent` method `{agent_name}` does not exist in {ENTRYPOINT}")
 
-        new_tool_nodes: set[ast.expr] = set()
-        for tool_name in tool.tools:
-            # This prefixes the tool name with the 'tools' module
-            node: ast.expr = asttools.create_attribute('tools', tool_name)
-            if tool.tools_bundled:  # Splat the variable if it's bundled
-                node = ast.Starred(value=node, ctx=ast.Load())
-            new_tool_nodes.add(node)
-
         existing_node: ast.List = self.get_agent_tools(agent_name)
-        elts: set[ast.expr] = set(existing_node.elts) | new_tool_nodes
-        new_node = ast.List(elts=list(elts), ctx=ast.Load())
+        existing_elts: list[ast.expr] = existing_node.elts
+
+        new_tool_nodes: list[ast.expr] = []
+        for tool_name in tool.tools:
+            # TODO there is definitely a better way to do this. We can't use
+            # a `set` becasue the ast nodes are unique objects.
+            _found = False
+            for elt in existing_elts:
+                if str(asttools.get_node_value(elt)) == tool_name:
+                    _found = True
+                    break  # skip if the tool is already in the list
+
+            if not _found:
+                # This prefixes the tool name with the 'tools' module
+                node: ast.expr = asttools.create_attribute('tools', tool_name)
+                if tool.tools_bundled:  # Splat the variable if it's bundled
+                    node = ast.Starred(value=node, ctx=ast.Load())
+                existing_elts.append(node)
+
+        new_node = ast.List(elts=existing_elts, ctx=ast.Load())
         start, end = self.get_node_range(existing_node)
         self.edit_node_range(start, end, new_node)
 

agentstack/generation/tool_generation.py

@@ -80,46 +80,46 @@ def remove_import_for_tool(self, tool: ToolConfig, framework: str):
 
 def add_tool(tool_name: str, agents: Optional[list[str]] = []):
     agentstack_config = ConfigFile()
+    tool = ToolConfig.from_tool_name(tool_name)
 
     if tool_name in agentstack_config.tools:
-        print(term_color(f'Tool {tool_name} is already installed', 'red'))
-        sys.exit(1)
+        print(term_color(f'Tool {tool_name} is already installed', 'blue'))
+    else:  # handle install
+        tool_file_path = tool.get_impl_file_path(agentstack_config.framework)
 
-    tool = ToolConfig.from_tool_name(tool_name)
-    tool_file_path = tool.get_impl_file_path(agentstack_config.framework)
+        if tool.packages:
+            packaging.install(' '.join(tool.packages))
 
-    if tool.packages:
-        packaging.install(' '.join(tool.packages))
+        # Move tool from package to project
+        shutil.copy(tool_file_path, conf.PATH / f'src/tools/{tool.module_name}.py')
 
-    # Move tool from package to project
-    shutil.copy(tool_file_path, conf.PATH / f'src/tools/{tool.module_name}.py')
+        try:  # Edit the user's project tool init file to include the tool
+            with ToolsInitFile(conf.PATH / TOOLS_INIT_FILENAME) as tools_init:
+                tools_init.add_import_for_tool(tool, agentstack_config.framework)
+        except ValidationError as e:
+            print(term_color(f"Error adding tool:\n{e}", 'red'))
 
-    try:  # Edit the user's project tool init file to include the tool
-        with ToolsInitFile(conf.PATH / TOOLS_INIT_FILENAME) as tools_init:
-            tools_init.add_import_for_tool(tool, agentstack_config.framework)
-    except ValidationError as e:
-        print(term_color(f"Error adding tool:\n{e}", 'red'))
+        if tool.env:  # add environment variables which don't exist
+            with EnvFile() as env:
+                for var, value in tool.env.items():
+                    env.append_if_new(var, value)
+            with EnvFile(".env.example") as env:
+                for var, value in tool.env.items():
+                    env.append_if_new(var, value)
+
+        if tool.post_install:
+            os.system(tool.post_install)
+
+        with agentstack_config as config:
+            config.tools.append(tool.name)
 
     # Edit the framework entrypoint file to include the tool in the agent definition
     if not agents:  # If no agents are specified, add the tool to all agents
         agents = frameworks.get_agent_names()
     for agent_name in agents:
+        print(f'Adding tool {tool.name} to agent {agent_name}')
         frameworks.add_tool(tool, agent_name)
 
-    if tool.env:  # add environment variables which don't exist
-        with EnvFile() as env:
-            for var, value in tool.env.items():
-                env.append_if_new(var, value)
-        with EnvFile(".env.example") as env:
-            for var, value in tool.env.items():
-                env.append_if_new(var, value)
-
-    if tool.post_install:
-        os.system(tool.post_install)
-
-    with agentstack_config as config:
-        config.tools.append(tool.name)
-
     print(term_color(f'🔨 Tool {tool.name} added to agentstack project successfully', 'green'))
     if tool.cta:
         print(term_color(f'🪩  {tool.cta}', 'blue'))

agentstack/main.py

@@ -5,6 +5,7 @@
 from agentstack import conf
 from agentstack.cli import (
     init_project_builder,
+    add_tool,
     list_tools,
     configure_default_model,
     run_project,
@@ -120,7 +121,7 @@ def main():
     tools_add_parser = tools_subparsers.add_parser(
         "add", aliases=["a"], help="Add a new tool", parents=[global_parser]
     )
-    tools_add_parser.add_argument("name", help="Name of the tool to add")
+    tools_add_parser.add_argument("name", help="Name of the tool to add", nargs="?")
     tools_add_parser.add_argument(
         "--agents", "-a", help="Name of agents to add this tool to, comma separated"
     )
@@ -179,7 +180,7 @@ def main():
         elif args.tools_command in ["add", "a"]:
             agents = [args.agent] if args.agent else None
             agents = args.agents.split(",") if args.agents else agents
-            generation.add_tool(args.name, agents=agents)
+            add_tool(args.name, agents)
         elif args.tools_command in ["remove", "r"]:
             generation.remove_tool(args.name)
         else:

agentstack/templates/crewai/{{cookiecutter.project_metadata.project_slug}}/README.md

@@ -15,7 +15,7 @@ This will automatically create a new agent in the `agents.yaml` config as well a
 
 Similarly, tasks can be created with `agentstack g t <tool_name>`
 
-Add tools with `agentstack tools add <tool_name>` and view tools available with `agentstack tools list`
+Add tools with `agentstack tools add` and view tools available with `agentstack tools list`
 
 ## How to use your Crew
 In this directory, run `poetry install`  

docs/tools/tools.mdx

@@ -7,5 +7,10 @@ description: 'Giving your agents tools should be easy'
 
 Once you find the right tool for your use-case, install it with simply
 ```bash
-agentstack tools add <tool_name>
+agentstack tools add
+```
+
+You can also specify a tool, and one or more agents to install it to:
+```bash
+agentstack tools add <tool_name> --agents=<agent_name1>,<agent_name2>
 ```