Chat

Archestra includes a built-in Chat interface for working with agents, MCP tools, files, browser actions, and model selection in one place.

Supported Providers

Chat supports the LLM providers configured for your workspace. See Supported LLM Providers for the full list.

Available Commands

Type / in the prompt input to open available chat commands.

• /compact summarizes older conversation history to reduce context usage and help prevent hitting the selected model's context limit. The full chat history remains visible in the conversation.

MCP Elicitation

Some MCP tools can ask for additional information while they run. Chat shows these requests as a modal form, validates required fields, and resumes the tool call after you continue. If the request points to an external URL, Chat only opens HTTP or HTTPS links.

Context Compaction

Context compaction replaces older messages sent to the model with a structured handoff summary while keeping recent turns verbatim. In short conversations, Chat can summarize completed earlier work instead of waiting for four user turns. The original chat history remains visible, and compaction events appear in the conversation timeline.

Compaction is handled by the built-in Context Compaction Subagent. Users with agent:admin permission can edit its instructions and model from the built-in agent settings. If no model is configured on the subagent, Chat uses the workspace default model, then the best available configured model.

Uploaded text files and PDFs are included in the compaction transcript when extractable text is available in the chat payload. If file text cannot be extracted (for example, a scanned PDF with no text layer), the summary records that limitation instead of implying the full file contents remain in context.

Chat Titles

Chat titles are generated by the built-in Chat Title Generation Subagent. Users with agent:admin permission can edit its instructions and model from the built-in agent settings. If no model is configured on the subagent, Chat uses the workspace default model, then the best available configured model.

File Attachments

Chat attachments are scoped to their conversation. Users with knowledgeFile:create can save a sent attachment to Knowledge Files, choose visibility, and select the agents or MCP Gateways that can retrieve it later.