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Built-in tools

Tyler comes with a set of built-in tools that provide common functionality for AI agents. These tools are ready to use out of the box and can be enabled or disabled as needed.

Web tools​

Search the web using DuckDuckGo.

web_search(query: str) -> List[SearchResult]

Web browse​

Visit a URL and extract its content.

web_browse(url: str) -> WebPage

File tools​

Read file​

Read the contents of a file.

read_file(path: str) -> str

Write file​

Write content to a file.

write_file(path: str, content: str) -> None

List directory​

List contents of a directory.

list_dir(path: str) -> List[str]

System tools​

Run command​

Execute a system command.

run_command(command: str) -> CommandResult

Get environment​

Get environment variables.

get_env(var_name: str) -> str

Image tools​

Generate image​

Generate an image using DALL-E.

generate_image(prompt: str) -> bytes

Analyze image​

Analyze an image using GPT-4 Vision.

analyze_image(image: bytes) -> str

Code tools​

Execute code​

Execute Python code in a sandbox.

execute_code(code: str) -> CodeResult

Format code​

Format code using black.

format_code(code: str) -> str

Next steps​

  • See the individual tool documentation pages linked above for examples and detailed API references

Web Tools​

The web module provides tools for interacting with web content.

web-fetch_page​

Fetches content from a web page and returns it in a clean, readable format with preserved structure.

Parameters:

  • url (string, required): The URL to fetch
  • format (string, optional): Output format - either 'text' or 'html'. Default: 'text'
    • Use 'text' for getting the content of a page
    • Only use 'html' when you need the raw HTML content
  • headers (object, optional): Optional headers to send with the request

Slack Tools​

The Slack module provides tools for interacting with Slack workspaces.

slack-post_to_slack​

Posts a message to Slack. The tool is careful about channel selection and requires explicit channel specification.

Parameters:

  • channel (string, required): The Slack channel to post to
  • blocks (array, required): The blocks to post to Slack
    • Each block is an object with:
      • type (string)
      • text (object)

slack-create_channel​

Creates a new Slack channel.

Parameters:

  • name (string, required): The name of the channel to create (will be automatically converted to lowercase and hyphens)
  • is_private (boolean, optional): Whether to create a private channel

slack-invite_to_channel​

Invites a user to a Slack channel.

Parameters:

  • channel (string, required): The channel ID or name to invite the user to
  • user (string, required): The user ID to invite to the channel

Command Line Tools​

The command line module provides safe access to system commands.

command_line-run_command​

Executes whitelisted command line operations safely.

Parameters:

  • command (string, required): Command to execute (must start with a whitelisted command)
  • working_dir (string, optional): Working directory for the command (defaults to current directory)

Available Commands:

Navigation & Read Operations (unrestricted):

  • ls: List directory contents
  • pwd: Print working directory
  • cd: Change directory
  • cat: Display file contents
  • find: Search for files by name
  • grep: Search for patterns in files
  • tree: Display directory structure
  • wc: Count lines/words/characters
  • head/tail: Show start/end of files
  • diff: Compare files

File Operations (restricted to workspace only):

  • mkdir: Create directory
  • touch: Create empty file
  • rm: Remove file/empty dir
  • cp: Copy file
  • mv: Move/rename file
  • echo: Write to file
  • sed: Edit file content

Notion Tools​

The Notion module provides tools for interacting with Notion workspaces.

Searches all titles of pages and databases in Notion that have been shared with the integration.

Parameters:

  • query (string, optional): The search query to find in page/database titles
  • filter (object, optional): Filter to only return pages or databases
    • value: "page" or "database"
    • property: "object"
  • start_cursor (string, optional): Cursor for pagination
  • page_size (integer, optional): Number of results to return (1-100, default 100)

Image Tools​

The image module provides tools for generating and manipulating images.

image-generate​

Generates images based on text descriptions using DALL-E 3.

Parameters:

  • prompt (string, required): Text description of the desired image (max 4000 characters)
  • size (string, optional): Size of the generated image. Default: "1024x1024"
    • Options: "1024x1024", "1792x1024", "1024x1792"
  • quality (string, optional): Quality of the image. Default: "standard"
    • "standard": Normal quality
    • "hd": Creates images with finer details and greater consistency
  • style (string, optional): Style of the generated image. Default: "vivid"
    • "vivid": Hyper-real and dramatic
    • "natural": Less hyper-real

Using Built-in Tools​

To use these tools, include their module names in your agent's configuration:

tools:
  - "web"           # Web tools
  - "slack"         # Slack tools
  - "notion"        # Notion tools
  - "command_line"  # Command line tools
  - "image"         # Image generation tools

Or when creating an agent programmatically:

from tyler.models import Agent

agent = Agent(
    model_name="gpt-4.1",
    purpose="To help with various tasks",
    tools=["web", "slack", "notion", "command_line", "image"]
)

Required Environment Variables​

Some tools require specific environment variables to be set:

Slack Tools​

  • SLACK_BOT_TOKEN: Your Slack bot token
  • SLACK_SIGNING_SECRET: Your Slack signing secret

Notion Tools​

  • NOTION_API_KEY: Your Notion API key
  • NOTION_VERSION: Notion API version (e.g., "2022-06-28")

Image Tools​

  • OPENAI_API_KEY: Your OpenAI API key (for DALL-E 3)

Additional Resources​

  • See the individual tool documentation pages linked above for examples and detailed API references