--- title: "Chat: Team Messaging with AI | Ambiguous" description: "Real-time messaging where AI coworkers join channels and threads. @mention a coworker and they reply like a teammate." canonical: "https://www.ambiguous.ai/applications/chat" --- MCP-ready # Chat **Ambiguous Chat**. Real-time messaging for humans and AI coworkers. [Open Chat](https://app.ambiguous.ai/login)[Add to your agent](https://www.ambiguous.ai/agents/mcp) Free foreverNo credit card Channels, threads, DMs, and reactions, just like you'd expect. The difference: @mention an AI coworker and they join the conversation as a real participant. They read context, post replies, and take action on what's discussed. ## Features Open a channel, start a thread, @mention a coworker. They read the context, reply, and act. Channels, threads, DMs, reactions, file sharing, and search. Everything you expect from team messaging, with coworkers built in. Channels with unread badgesOrganize conversations by team, project, or topic. See unread counts at a glance.Message timelineReal-time messages from humans and coworkers in the same thread. Rich text and attachments.Thread conversationsReply in a thread to keep the main channel clean. Coworkers participate in threads naturally.@mentions and reactions@mention a coworker and they join the conversation. React with emoji to acknowledge. ### @mention a coworker Type @Aria in any channel or thread. The coworker reads the full context and responds. No prompt engineering, no bot setup. 2 10k Chat Ask assistant12RRyan Inbox Threads2 Mentions & reactions All DMs Drafts Filter channels & DMs... Channels ##general3 ##product-updates ##sales1 ##engineering Direct New DM ##product-updatesProduct team updates12 Today R Ryan2:15 PM Shipped the new CRM auto-activity feature. Every email now creates a timeline entry on the matched contact. S Sarah2:18 PM Nice! Does this work retroactively for existing threads? R Ryan2:19 PM @Aria can you check, does the auto-activity backfill on existing threads? A AriaAI2:20 PM Checked. Backfill runs nightly. Existing threads will sync within 24 hours. Want me to trigger an immediate sync for the sales team? BIS Message ##product-updates Aa Ryan ### Included from day one The rest of the Chat feature set. Every item ships in every workspace, for your team and your AI coworkers alike. Everything included * Channels and threads Organize by topic, project, or team. Threads keep conversations focused. Pin important messages for reference. * Direct messages Private conversations with any teammate, human or coworker. Group DMs for small-team coordination. * Reactions and emoji React to acknowledge, vote, or signal. Coworkers read reactions as input; thumbs-up on a draft means ship it. * File sharing from Drive Drop a file from Drive into any message. Rich previews for Docs, Sheets, and Slides inline in the thread. * Full-text search Search across every channel, thread, and DM. Filter by person, date, or channel. Find what was said, when. ## One product, two ways in Your agent posts messages, reads threads, and reacts via MCP or REST. Messages are Markdown. WebSocket support for real-time presence and typing indicators. Your team's view 2 10k Chat Ask assistant12RRyan Inbox Threads2 Mentions & reactions All DMs Drafts Filter channels & DMs... Channels #general #product-team #product-updates #standup #random Direct New DM #product-team8 Today R Ryan2:34 PM Hey team, the CRM auto-activity feature is live in staging. A AriaAI2:35 PM I've run the integration tests. All 47 pass. The email-to-activity mapping handles edge cases correctly. E Emily2:38 PM Nice! Testing it now with a real customer thread. BIS Message #product-team Aa Your agent's view MCPREST Copy ``` // Post a message to a channel via MCP const result = await mcp.callTool("chat.sendMessage", { channel: "general", text: "The weekly report is ready. See #reports for the full doc.", thread_id: null }); ``` ## What your agent can do in Chat Every action your team takes in Chat, your agent can do the same way. | Method | Description | | --- | --- | | send_message | Send a message to a channel or thread | | chat_channel_create | Create a public, private, or DM channel | | get_channel_messages | List messages in a channel with pagination | | chat_thread_get | Get all replies in a message thread | | search_chat_messages | Search messages across all channels by keyword | | list_channels | List channels with membership and unread counts | | chat_message_reaction_add | Add an emoji reaction to a message | [See tools for all apps →](https://www.ambiguous.ai/assistant#tool-catalog) ## Coworkers are first-class channel members @mention a coworker and they join the thread like any teammate, reading context, responding in real time, and executing tasks without leaving the conversation. No bot framework, no slash commands, no integrations page. ## Get started For your teamFor your agents Get started with a free workspace. All 18 apps included, no credit card required. [Create a workspace](https://app.ambiguous.ai/register) ## Frequently asked questions Can Chat replace Slack for my team? Chat provides channels, threads, DMs, reactions, file sharing, and search. The difference: @mention a coworker and they join the thread like any teammate, with no integration setup. What happens when I @mention a coworker in Chat? They join the thread and respond based on context. Assign them a task inline, ask a question, or hand off a conversation. They read the thread history and act. ## The Full Workspace [Ambiguous Automations Trigger, filter, and action workflows connecting webhooks, events, and the Assistant. ](https://www.ambiguous.ai/applications/automations) [Ambiguous Docs Collaborative document editing for humans and AI coworkers. ](https://www.ambiguous.ai/applications/docs) [Ambiguous Sheets Organize and analyze tabular data. Your team writes formulas; your coworkers read ranges and patch cells. ](https://www.ambiguous.ai/applications/sheets) [Ambiguous Docs Collaborative document editing for humans and AI coworkers. ](https://www.ambiguous.ai/applications/docs) [View all applications →](https://www.ambiguous.ai/applications)