Transport — Agent wire protocols # MCP (Model Context Protocol) Wire formats between agents, hosts, and tool servers. JSON-RPC tool and context wire between an agent runtime and tool servers — stdio or streamable HTTP. [modelcontextprotocol.io ↗](https://modelcontextprotocol.io/) Catalog entry: [Model Context Protocol](https://www.agentlist.io/systems/mcp) MIX ## Who speaks it - 12[CLI agents](https://www.agentlist.io/categories/cli-agent) - 08[agent communication platforms](https://www.agentlist.io/categories/agent-communication) - 05[AI IDEs](https://www.agentlist.io/categories/ai-ide) - 04[agent services](https://www.agentlist.io/categories/agent-services) - 03[IDE extensions](https://www.agentlist.io/categories/ide-extension) - 02[bridge protocols](https://www.agentlist.io/categories/bridge) - 01[personal agents](https://www.agentlist.io/categories/personal-agent) BY ## Vendors (29) - [AgentMail](https://www.agentlist.io/ai/agentmail) - [Alibaba Cloud](https://www.agentlist.io/ai/alibaba) - [Amazon Web Services](https://www.agentlist.io/ai/aws) - [Amp Inc.](https://www.agentlist.io/ai/amp) - [Anthropic](https://www.agentlist.io/ai/anthropic) - [Anysphere](https://www.agentlist.io/ai/anysphere) - [Augment Code](https://www.agentlist.io/ai/augment) - [Block](https://www.agentlist.io/ai/block) - [CAMEL-AI](https://www.agentlist.io/ai/camel-ai) - [Charm](https://www.agentlist.io/ai/charm) - [Cognition](https://www.agentlist.io/ai/cognition) - [Community / OSS](https://www.agentlist.io/ai/community) - [Composio](https://www.agentlist.io/ai/composio) - [CrewAI](https://www.agentlist.io/ai/crewai) - [Exa](https://www.agentlist.io/ai/exa) - [Google](https://www.agentlist.io/ai/google) - [HKUDS](https://www.agentlist.io/ai/hkuds) - [IBM](https://www.agentlist.io/ai/ibm) - [Kilo](https://www.agentlist.io/ai/kilo) - [LangChain](https://www.agentlist.io/ai/langchain) - [Mem0](https://www.agentlist.io/ai/mem0) - [Microsoft](https://www.agentlist.io/ai/microsoft) - [Mistral AI](https://www.agentlist.io/ai/mistral) - [Moonshot AI](https://www.agentlist.io/ai/moonshot) - [OpenAI](https://www.agentlist.io/ai/openai) - [OpenScout](https://www.agentlist.io/ai/openscout) - [VRSEN](https://www.agentlist.io/ai/vrsen) - [Warp](https://www.agentlist.io/ai/warp) - [Zed Industries](https://www.agentlist.io/ai/zed) MATRIX ## Agents on this wire (35) [Cursor Anysphere · ai-ide editor/api · local/cloud · Hobby free; Pro $20/mo; Pro+ $60; Ultra $200; Teams $40/user](https://www.agentlist.io/systems/cursor) [Windsurf / Devin Desktop Cognition · ai-ide editor · local/cloud · Free; Pro $20/mo; Max $200; Teams $80 + $40/seat](https://www.agentlist.io/systems/windsurf) [Claude Code Anthropic · cli-agent cli/editor/api · local · Included in Claude Pro $20/mo and Max ($100/$200); API pay-per-token](https://www.agentlist.io/systems/claude-code) [Codex CLI OpenAI · cli-agent cli/editor/api · local/cloud · Included in ChatGPT Free/Go/Plus/Pro/Business/Enterprise; credits for extra usage](https://www.agentlist.io/systems/codex-cli) [Aider Community / OSS · cli-agent caution cli · local · Free (OSS) + your model API costs](https://www.agentlist.io/systems/aider) [Cline Community / OSS · ide-extension editor/cli · local · Free (OSS) + model costs; ClinePass $9.99/mo](https://www.agentlist.io/systems/cline) [Amp Amp Inc. · cli-agent cli/editor · local · Hobby free (BYOK / own runners); Megawatt $20/mo; Gigawatt $200](https://www.agentlist.io/systems/amp) [OpenCode Community / OSS · cli-agent cli · local · Free (OSS) + BYOK; Zen PAYG; Go $10/mo](https://www.agentlist.io/systems/opencode) [Goose Block · cli-agent cli · local · Free (OSS) + model costs](https://www.agentlist.io/systems/goose) [OpenScout / Scout OpenScout · agent-communication cli/api · local · Free (OSS), local](https://www.agentlist.io/systems/scout) [Model Context Protocol Community / OSS · bridge api · local/cloud · Open protocol (free)](https://www.agentlist.io/systems/mcp) [Kiro Amazon Web Services · ai-ide editor/cli · local/cloud · Free (50 credits); Pro $20/user/mo; Pro+ $40; Pro Max $100; Power $200](https://www.agentlist.io/systems/kiro) [Google Antigravity Google · ai-ide editor/cli · local/cloud · Individual free; higher quota via Google AI Pro $19.99 / Ultra $99.99–$199.99](https://www.agentlist.io/systems/antigravity) [Gemini CLI Google · cli-agent caution cli · local · Consumer/free tiers ended Jun 18, 2026; API key or Code Assist Standard/Enterprise only](https://www.agentlist.io/systems/gemini-cli) [Zed Zed Industries · ai-ide editor · local · Editor free; Pro $10/mo (incl. $5 tokens); Business $30/seat](https://www.agentlist.io/systems/zed) [Warp Warp · cli-agent cli · local/cloud · Free; Pro $20/mo; Team $45–50/user; Max $200](https://www.agentlist.io/systems/warp) [Augment Code Augment Code · ide-extension editor/cli · local/cloud · Business $100/mo flat (up to 50 seats, $100 usage incl.); Enterprise custom](https://www.agentlist.io/systems/augment) [Kimi Code Moonshot AI · cli-agent cli/editor/api · local · Free OSS; Kimi Code managed service or Moonshot API keys (multi-provider)](https://www.agentlist.io/systems/kimi-code) [Qwen Code Alibaba Cloud · cli-agent cli/editor/api · local · Free OSS (Apache-2.0); Alibaba Cloud Coding Plan or any compatible provider](https://www.agentlist.io/systems/qwen-code) [Mistral Vibe Mistral AI · cli-agent cli/editor · local · CLI open source; models via Mistral API / Le Chat; Devstral Small self-deployable](https://www.agentlist.io/systems/mistral-vibe) [Crush Charm · cli-agent cli · local · Free OSS (FSL-1.1-MIT); BYO provider keys](https://www.agentlist.io/systems/crush) [Kilo Code Kilo · ide-extension editor/cli/api · local/cloud · Free OSS; 500+ models at provider rates via Kilo; Kilo Pass plans](https://www.agentlist.io/systems/kilo-code) [Instinct Community / OSS · bridge caution api · local · Free (OSS, MIT)](https://www.agentlist.io/systems/instinct) [nanobot HKUDS · personal-agent cli/api · local · Free OSS](https://www.agentlist.io/systems/nanobot) [BeeAI IBM · agent-communication api/cli · local/cloud · Free (OSS, Apache-2.0)](https://www.agentlist.io/systems/beeai) [CrewAI CrewAI · agent-communication api/cli · local/cloud · Free OSS core; CrewAI Enterprise paid (verify)](https://www.agentlist.io/systems/crewai) [Microsoft Agent Framework Microsoft · agent-communication api · local/cloud · Free OSS (MIT); Azure hosting via Foundry](https://www.agentlist.io/systems/agent-framework) [LangGraph LangChain · agent-communication api · local/cloud · Free OSS; LangGraph Platform paid tiers](https://www.agentlist.io/systems/langgraph) Extended matrix — 7 more 80/20 preview TABLE ## Transport table | Agent | Vendor | Category | | --- | --- | --- | | CursorCursor is a VS Code–based AI-native editor with repo-aware chat, multi-file edits, Composer/agent modes, and cloud background agents. | Anysphere | ai-ide | | Windsurf / Devin DesktopWindsurf is Cognition's AI IDE (ex-Codeium) built around Cascade multi-step agent flows, sold on the same Free / Pro / Max / Teams sheet as Devin. | Cognition | ai-ide | | Claude CodeClaude Code is Anthropic's terminal-native coding agent: it plans, edits, runs commands, uses Git and MCP, and sustains long agentic loops. | Anthropic | cli-agent | | Codex CLICodex is OpenAI's coding agent: an open-source terminal CLI, a desktop app, IDE extensions, and a cloud lane for async tasks, all included in ChatGPT plans. | OpenAI | cli-agent | | AiderAider is an open-source, Git-native pair programmer: it maps the repo, proposes commits, and works with any model via BYOK or OpenRouter. | Community / OSS | cli-agent | | ClineCline is an open-source VS Code agent that plans, edits, and runs tools with BYOK models and approval controls. | Community / OSS | ide-extension | | AmpAmp is a terminal-first, multi-model coding agent with subagents, an Oracle second-opinion model, threads, and MCP plugins. | Amp Inc. | cli-agent | | OpenCodeOpenCode is an MIT-licensed open-source terminal coding agent that is fully BYOK, with optional hosted model access via Zen and Go. | Community / OSS | cli-agent | | GooseGoose is Block's local-first agent runtime with many model providers and extensible tool plugins. | Block | cli-agent | | OpenScout / ScoutOpenScout / Scout is a local-first broker that lets addressable agents (Claude Code, Codex, Cursor) send and ask across harnesses on one mesh. | OpenScout | agent-communication | | Model Context ProtocolModel Context Protocol is an open protocol for connecting agents and IDEs to tools and data sources through MCP servers. | Community / OSS | bridge | | KiroKiro is AWS's agent-first IDE: spec-driven development (requirements → design → tasks), agent hooks, and an Auto agent, with a CLI. | Amazon Web Services | ai-ide | | Google AntigravityGoogle Antigravity is Google's agent-first IDE and CLI, the successor surface to Gemini Code Assist for individuals and Gemini CLI. | Google | ai-ide | | Gemini CLIGemini CLI is Google's open-source terminal agent; on June 18, 2026 it stopped serving free and Google AI Pro/Ultra accounts in favor of the Antigravity CLI. | Google | cli-agent | | ZedZed is a fast native editor (Rust, GPU-rendered) with a built-in agent panel, edit predictions, and hosted or BYOK models. | Zed Industries | ai-ide | | WarpWarp is a terminal that ships its own coding agent (Warp Agent / Oz) with plan-bundled credits, so the shell itself runs agentic tasks. | Warp | cli-agent | | Augment CodeAugment Code is a context-engine coding agent for large codebases, available in VS Code, JetBrains, and a CLI (Auggie), priced as one flat team plan. | Augment Code | ide-extension | | Kimi CodeKimi Code is Moonshot AI's single-binary terminal agent — tuned TUI, subagents, conversational MCP setup, lifecycle hooks, and ACP for Zed/JetBrains. Runs Kimi models by default but also speaks Anthropic, OpenAI, and Gemini protocols. | Moonshot AI | cli-agent | | Qwen CodeQwen Code is Alibaba's open-source terminal agent — adapted from Gemini CLI and tuned for Qwen3-Coder — with subagents, agent teams, auto-memory and auto-skills, IDE plugins, a desktop app, daemon mode, and SDKs. | Alibaba Cloud | cli-agent | | Mistral VibeMistral Vibe is Mistral's open-source CLI coding agent powered by Devstral 2 — terminal-native multi-file automation with IDE extensions for VS Code, JetBrains, and Zed over ACP. Its enterprise counterpart is Mistral Code. | Mistral AI | cli-agent | | CrushCrush is Charm's open-source terminal coding agent — multi-model sessions that can switch providers mid-session, LSP-enhanced context, MCP support, and a polished TUI on every major platform. | Charm | cli-agent | | Kilo CodeKilo Code is an open-source agentic platform — VS Code/JetBrains extension, CLI, Slack, and cloud agents over a shared OpenCode engine. Started as a Roo Code fork and became the main migration path after Roo's May 2026 shutdown. | Kilo | ide-extension | | InstinctInstinct is a self-learning memory MCP server for coding agents — it observes repeated patterns, scores them by confidence, and promotes mature ones into suggestions it exports back to Claude Code, Cursor, Windsurf, Codex, and CLAUDE.md. | Community / OSS | bridge | | nanobotnanobot is HKUDS's Python answer to OpenClaw — a compact, MCP-native assistant codebase you can audit in an afternoon, popular as a learning platform and a base for custom assistants. | HKUDS | personal-agent | | BeeAIBeeAI is IBM's open-source agent platform — run, compose, and observe agents locally or on a cluster, with ACP/A2A-style interop and a web UI for non-technical operators. | IBM | agent-communication | | CrewAICrewAI is the most widely adopted multi-agent framework: model crews of role-based agents in YAML or Python, run sequential or hierarchical processes, and manage fleets through the CrewAI control plane. | CrewAI | agent-communication | | Microsoft Agent FrameworkMicrosoft Agent Framework is the successor to AutoGen and Semantic Kernel's agent pieces — one OSS framework (Python and .NET) for single agents, multi-agent graphs, and Magentic-style orchestration. | Microsoft | agent-communication | | LangGraphLangGraph is LangChain's agent orchestration framework — durable stateful graphs with supervisor and swarm multi-agent patterns, checkpointing, and LangGraph Platform for deployment. | LangChain | agent-communication | KIND ## More agent wire protocols - [A2A (Agent2Agent)](https://www.agentlist.io/transports/a2a) - [ACP](https://www.agentlist.io/transports/acp) - [AG-UI](https://www.agentlist.io/transports/ag-ui) - [AGNTCY / SLIM](https://www.agentlist.io/transports/agntcy-slim) - [AITP](https://www.agentlist.io/transports/aitp) - [ANP (Agent Network Protocol)](https://www.agentlist.io/transports/anp) --- Source: [MCP (Model Context Protocol) — agent transport | agentlist.io](https://www.agentlist.io/transports/mcp). 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