> ## Documentation Index > Fetch the complete documentation index at: https://docs.lyzr.ai/llms.txt > Use this file to discover all available pages before exploring further. # Tool Providers Lyzr pre-built tools are powered by two integration providers: **Composio** and **ACI**. When you add a tool to an agent, the underlying provider handles authentication, action routing, and API calls on your behalf. ## What is Composio? Composio is an integration platform that provides a broad library of pre-built connectors to SaaS tools. Composio-sourced tools offer the widest action coverage and are best suited for workflow automation, task orchestration, and multi-step business processes. * **Action coverage**: Most tools expose 20 to 100+ distinct actions. * **Authentication**: Standardized OAuth 2.0 flow for most integrations. * **Best for**: Workflow automation, data sync, and multi-step agent tasks. ## What is ACI? ACI (Agent Computer Interface) is Lyzr's own integration layer optimized for AI agents. ACI-sourced tools are designed for precise, API-level operations with predictable inputs and outputs, making them well-suited for agents that need reliable, targeted actions. * **Action coverage**: Focused action sets tuned for AI agent use. * **Authentication**: Supports OAuth 2.0, API key, and no-auth integrations. * **Best for**: Search, data retrieval, code execution, and scheduling. ## Choosing a provider for dual-provider tools Five tools are available through both providers. When you see two variants in the tools list, use this guide: | Tool | Use Composio when... | Use ACI when... | | -------------- | ------------------------------------------------------------ | ---------------------------------------------------------- | | **Gmail** | You need full mailbox management (labels, threads, drafts) | You only need to send emails via API | | **GitHub** | You need PR management, issue tracking, workflow automation | You need repository metadata or targeted API calls | | **Notion** | You need page/database CRUD and complex workspace operations | You need simple workspace reads or targeted content access | | **YouTube** | You need channel management, uploads, or playlist automation | You need video search and feed retrieval | | **SharePoint** | You need document management and intranet content automation | You need site/list/library reads via Microsoft Graph | ## Tool provider reference | Tool | Provider | Auth | Description | | --------------------- | -------- | --------- | --------------------------------------------------- | | Apollo | Composio | API Key | CRM and lead generation | | ArXiv | ACI | No Auth | Retrieve academic papers from ArXiv | | Brave Search | ACI | API Key | Web search via Brave Search API | | Browserbase | ACI | API Key | Run headless browsers for web automation | | Calendly | Composio | OAuth 2.0 | Schedule and manage meetings | | ClickUp | Composio | OAuth 2.0 | Task and project management | | Confluence | Composio | OAuth 2.0 | Team collaboration and knowledge management | | Discord | Composio | OAuth 2.0 | Messaging and voice communication | | Dropbox | Composio | OAuth 2.0 | Cloud file storage and sharing | | E2B | ACI | API Key | Execute AI-generated code in secure cloud sandboxes | | Excel | Composio | OAuth 2.0 | Microsoft Excel spreadsheet management | | Freshdesk | Composio | API Key | Customer support ticketing and helpdesk | | GitHub (Composio) | Composio | OAuth 2.0 | Repository, PR, and issue management | | GitHub (ACI) | ACI | OAuth 2.0 | GitHub API for repository and code operations | | Gmail (Composio) | Composio | OAuth 2.0 | Full Gmail mailbox management | | Gmail (ACI) | ACI | OAuth 2.0 | Send and read emails via Gmail API | | Google Calendar | Composio | OAuth 2.0 | Time management and scheduling | | Google Docs | Composio | OAuth 2.0 | Cloud-based document creation and editing | | Google Drive | Composio | OAuth 2.0 | File storage and management | | Google Maps | ACI | API Key | Navigation, geocoding, and place search | | Google Sheets | ACI | OAuth 2.0 | Spreadsheet read/write via Google Sheets API | | Google Tasks | Composio | OAuth 2.0 | Task list management | | Hacker News | ACI | No Auth | Fetch stories and posts from Hacker News | | HubSpot | Composio | OAuth 2.0 | CRM, marketing, and sales platform | | Instantly | Composio | API Key | Cold email outreach automation | | Jira | Composio | API Key | Issue tracking and agile project management | | Linear | Composio | OAuth 2.0 | Issue tracking for engineering teams | | LinkedIn | Composio | OAuth 2.0 | Professional networking and content publishing | | Lyzr Scheduler | ACI | API Key | Schedule and manage Lyzr agent executions | | Microsoft Outlook | ACI | OAuth 2.0 | Email and calendar management via Microsoft Graph | | Microsoft Teams | Composio | OAuth 2.0 | Team chat, meetings, and file collaboration | | Notion (ACI) | ACI | OAuth 2.0 | Notion workspace management via ACI | | Notion (Composio) | Composio | OAuth 2.0 | Notion pages, databases, and workspace automation | | Perplexity AI | Composio | API Key | AI-powered search and research | | Salesforce | Composio | OAuth 2.0 | CRM, sales, and service cloud | | SharePoint (ACI) | ACI | OAuth 2.0 | SharePoint sites and libraries via Microsoft Graph | | SharePoint (Composio) | Composio | OAuth 2.0 | Document management and intranet automation | | Slack | Composio | OAuth 2.0 | Channel-based team messaging | | Snowflake | ACI | OAuth 2.0 | SQL query execution on Snowflake databases | | Telegram | Composio | API Key | Cloud-based messaging and bot interactions | | Trello | Composio | OAuth 2.0 | Kanban-style project management | | Twitter | Composio | OAuth 2.0 | Twitter social media management | | YouTube (Composio) | Composio | OAuth 2.0 | YouTube channel and video management | | YouTube (ACI) | ACI | OAuth 2.0 | YouTube video search and feed retrieval |