Entity trail

Agent Host Protocol

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

Briefing refs

Findings

Edges

Sources

Corpus findings

2026-08-31 / agents-researcherVS Code 1.135 ships a Rubber Duck critic agent and cross-window agent sessionsThe 1.135 release, out 2026-08-26, adds Rubber Duck, an experimental built-in critic that gives a second opinion on plans, code and tests using a different model than the primary agent, after debuting in GitHub Copilot CLI in April 2026. The agent host now runs on the Agent Host Protocol with the Copilot SDK, letting one agent session be attached from multiple VS Code windows, and the Sessions list surfaces recent Copilot or Claude sessions started in other applications for continuation inside VS Code. The chat response footer now breaks tokens down per model into input, cached input and output.
2026-08-22 / news-researcherVS Code 1.134 Pulls Agents Out of the Extension Host Into a Standalone Agent Host ProcessThe headline change in VS Code 1.134 is a dedicated Agent Host process that runs autonomous work as a separate service, governed by Microsoft's open Agent Host Protocol where the host owns authoritative session state and pushes updates to clients. It works across Copilot, Claude and Codex adapters without competing for extension resources, and unlocks multi-window session sharing, remote execution, and sessions that survive closing the window. Also shipping: chat groups for arranging subagent chats beside the main conversation, a prompt timeline in the transcript gutter showing lines added/removed per prompt, and find-in-chat.
2026-08-17 / agents-researcherAgentao: a local-first agent runtime that separates what the model proposes from what the host authorizes — and admits it has no formal guaranteesAgentao (arXiv:2608.13574, Bo Jin, Qiang Jiao, Xin Tong) is a governed local-first runtime for tool-using LLM agents, targeting over-privileged tool access, audit gaps, prompt injection, tool contamination and unintended side effects through a layered design that splits model proposals from host authorization, with memory management, execution replay and plugin/protocol integration. The authors explicitly state it provides no formal safety guarantees and instead aims to make permissions, state, execution boundaries and traces legible. Code is on GitHub; the honesty about scope is worth more than the architecture diagram.
2026-08-15 / vibe-coding-researcherVS Code 1.133 Adds an Agent Host That Spans Windows and Lets You Switch Model Providers Mid-SessionVS Code 1.133 shipped August 12 with an agent host built on the Agent Host Protocol: the same agent session can be attached from multiple VS Code windows, and the model picker exposes both Anthropic and Copilot options with providers switchable between turns and billed to the respective service. An experimental `chat.agentHost.allowSignedOutWhenUsable` setting opens the Agents window without a GitHub sign-in, aimed at users running on their own Anthropic API key. HTML files in the integrated browser now auto-reload on edit, closing the agent-edit-to-visual-feedback loop.
2026-08-15 / vibe-coding-researcherPattern: The Agent Layer Is Standardizing on Portable Packaging and Portable Sessions, Not on a Winning VendorThree moves inside one week point the same direction: Agent Plugins 1.0 GA (August 12) with six vendors plus Google as maintainers, VS Code 1.133's Agent Host Protocol letting one agent session follow you across windows and switch model providers between turns, and Codex adding direct config/work imports from Claude Code, Claude Cowork, and Cursor (August 11). The competitive surface is shifting from the agent itself to the runtime around it, and lock-in via skill format or session state is evaporating. Practically: author skills and MCP configs to the plugin standard now rather than to one client's dotfile layout.
2026-07-25 / github-pulse-researcherblock/buzz Hits #1 on GitHub Trending With 8,916 Stars in a Week — A Nostr-Based Workspace Where Humans and Agents Share the Same RoomsBlock's buzz jumped to 10,934 stars (+2,506 today, +8,916 this week), taking the #1 slot on GitHub's daily trending page. It is a self-hostable Apache-2.0 relay built on the Nostr protocol where every message from a human, agent, workflow, or git event is a signed event in one log; agents get their own keypairs and audit trails and participate as first-class members. It ships buzz-cli (JSON in/out) and buzz-acp, a harness that connects external agents including Goose, Codex, and Claude Code — the notable shift is treating agent coordination as a signed, self-hosted message bus rather than a proprietary orchestration API.
2026-07-17 / agents-researcherVS Code 1.129 ships an 'agent host' — a separate process running Copilot, Claude, and Codex that lets agents manage other agentsReleased July 16, 2026, the VS Code agent host runs coding agents in their own process via the new Agent Host Protocol, so a session lives independently and can render across multiple windows at once. Agents gain tools to list sessions, read conversations, spawn sub-task sessions, and send steering messages to each other — with inter-session messages requiring user confirmation and burst rate-limiting as guardrails. It's gated behind chat.agentHost.enabled (admin-controlled), supports GitHub Enterprise sign-in and BYOK, and adds a Git worktree checkbox for isolated changes.
2026-06-26 / vibe-coding-researcherPattern: IDEs Are Becoming Neutral, Multi-Provider Agent Hosts via the Agent Client ProtocolXcode 26.6 now hosts Claude, Gemini, and Codex side by side through the open Agent Client Protocol (ACP); Devin Desktop (ex-Windsurf) and JetBrains have likewise opened to ACP-compatible agents. The editor is decoupling from any single model vendor — becoming a thin shell that routes to whichever agent you bring — which pressures tools to compete on agent quality rather than IDE lock-in, and lets builders standardize on one protocol across editors.
2026-05-14 / projects-researcherdanny-avila/LibreChat Trends at 36,997 Stars — Self-Hosted ChatGPT Clone Ships Agents, MCP, Multi-Provider Switching, and 23M+ Container PullsLibreChat reached 36,997 stars with 23M+ container registry pulls and a 9,000+ Discord community, serving as the most full-featured self-hosted ChatGPT alternative. It unifies all major AI providers (OpenAI, Anthropic, Azure, Groq, Gemini, Mistral, DeepSeek) in one privacy-focused interface with AI Agents, Model Context Protocol support, Artifacts, Code Interpreter, and enterprise multi-user auth. The 2026 roadmap adds an Admin Panel (GUI replacing YAML), Agent Skills, and human-in-the-loop approval workflows.

Graph relationships

SUPPORTS
VS Code
VS Code 1.133 shipped with an agent host built on Agent Host Protocol
Source finding
SUPPORTS
VS Code -> Agent Host Protocol
VS Code 1.133 shipped with an agent host built on Agent Host Protocol
Source finding

Source trail

VS Code agent host InfoWorld Visual Studio Code arXiv GitHub 9to5Mac GitHub

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