Which agent supports which standard

Anthropic · Terminal, IDE, Desktop, Web

Anthropic's agentic coding tool. Reads the codebase, edits files, runs commands, and extends through MCP servers, Skills, subagents, hooks and plugin marketplaces. Project instructions live in CLAUDE.md.

OpenAI · Terminal, IDE, Desktop, Web

OpenAI's coding agent across CLI, IDE, ChatGPT and cloud. One of the originators of AGENTS.md, with Skills, MCP and a plugin marketplace.

Google · Terminal

Google's open-source terminal agent for Gemini models, with MCP servers, extensions, Skills and AGENTS.md support.

Anomaly (SST) · Terminal, IDE, Desktop

Provider-agnostic open-source coding agent for terminal, IDE and desktop. Works with 75+ model providers, including local models.

Anysphere · IDE, CLI, Web

AI editor and coding agent. Supports MCP, Agent Skills, AGENTS.md, and runs as both an ACP agent and client.

GitHub / Microsoft · IDE, GitHub, CLI

Copilot's coding agent and VS Code agent mode. Agent Skills, AGENTS.md and MCP are supported; ACP support is in public preview.

Block, now at the Agentic AI Foundation · Desktop, Terminal, API

Open-source, extensible agent with desktop app, CLI and API. Its extensions are MCP servers. A founding project of the Linux Foundation's Agentic AI Foundation.

All Hands AI · Web, Terminal, Cloud

Open platform for cloud coding agents. Self-hostable, model-agnostic, runs one to thousands of agents with optional Docker sandboxing.

Amp · Terminal, IDE

Frontier coding agent for terminal and editor. Co-created the AGENTS.md convention and supports Agent Skills.

Factory · Terminal, IDE, CI/CD

Delegates whole tasks (refactors, migrations, incident response) to Droids from IDE, CLI or CI/CD.

JetBrains · IDE, CLI

LLM-agnostic coding agent built on the IntelliJ Platform, so it reads the project the way the IDE does.

AWS · IDE, CLI

Spec-driven agentic IDE and CLI: turns prompts into requirements, designs and tasks before writing code.

Zed Industries · Editor

Rust editor with a native agent panel. Created the Agent Client Protocol, so it can drive Claude, Codex, Gemini CLI, OpenCode and other ACP agents.

Cline · IDE, CLI

Open-source autonomous coding agent for VS Code and JetBrains with a plan/act workflow and an MCP marketplace.

Roo Code · IDE

Open-source multi-mode coding agent for VS Code with custom modes, MCP, Skills and AGENTS.md.

Alibaba Qwen · Terminal

Terminal agent tuned for Qwen coder models that also runs OpenAI, Anthropic, Gemini and local Ollama or vLLM backends.

Mistral AI · Terminal

Mistral's command-line coding assistant with Agent Skills and ACP support.

Mario Zechner · Terminal

Minimal, hackable terminal coding harness meant to be adapted to your workflow.

Aider · Terminal

Long-running open-source pair-programming CLI with git-native edits and broad model support.

Nous Research · Terminal, Desktop, Messaging

Model-agnostic personal agent across CLI, desktop and messaging apps. Learns across sessions and writes reusable skills from its own work.

OpenClaw community · Local, Messaging

Open-source personal assistant that runs locally and lives in the messaging apps you already use, with cron jobs, plugins and approvals.

Letta · API, Terminal

Platform for stateful agents with long-term memory that learn and improve over time. Letta Code brings it to the terminal.