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Compare Protocols

Select 2-3 protocols for a side-by-side comparison of features, maturity, and ecosystem support.

Attribute AutoGenCrewAILangGraphCopilotKit/CopilotKitAgent-to-Agent Protocol (A2A)Agent-to-Agent Protocol (A2A)MemGPT / LettaSwarm (OpenAI)AG-UIGuardrails AIHTTP 402 Payment Protocol (x402)getsentry/XcodeBuildMCPmobile-next/mobile-mcpPennyroyalTea/gibberlinkZepopenclaw/acpxMouseww/anything-analyzeropen-gitagent/gitagent-protocolRAIT-09/obsidian-agent-clientsendaifun/solana-agent-kitmachinepulse-ai/world2agentAgent Network Protocol (ANP)Agent ProtocolOpenAI Assistants APIConstitutional AIOWASP LLM Top 10Model Context ProtocolOpenAI Function CallingTool Use (Anthropic)LangChain MemoryAgent Communication Language (FIPA ACL)
Category๐ŸŽฏ Orchestration๐ŸŽฏ Orchestrationโš™๏ธ Harness๐Ÿ”ง Tool Calling๐Ÿ“ก Communication๐Ÿ“ก Communication๐Ÿง  Memory๐ŸŽฏ Orchestrationโš™๏ธ Harness๐Ÿ›ก๏ธ Safety๐Ÿ“ก Communication๐Ÿ”ง Tool Calling๐ŸŽฏ Orchestration๐Ÿ“ก Communication๐Ÿง  Memory๐Ÿ”ง Tool Calling๐Ÿ”ง Tool Calling๐ŸŽฏ Orchestration๐Ÿ“ก Communication๐ŸŽฏ Orchestration๐Ÿ“ก Communication๐Ÿ“ก Communicationโš™๏ธ Harnessโš™๏ธ Harness๐Ÿ›ก๏ธ Safety๐Ÿ›ก๏ธ Safety๐Ÿ”ง Tool Calling๐Ÿ”ง Tool Calling๐Ÿ”ง Tool Calling๐Ÿง  Memory๐Ÿ“ก Communication
Statusactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactiveactive
MaintainerMicrosoftCrewAILangChainโ€”GoogleGoogleLettaOpenAICopilotKitGuardrails AICoinbase/x402 Foundationโ€”โ€”โ€”Zepโ€”โ€”โ€”โ€”โ€”โ€”ANP CommunityAI Engineer FoundationOpenAIAnthropicOWASPAnthropicOpenAIAnthropicLangChainIEEE FIPA
GitHub Stars58,70152,86233,92032,26324,13524,13523,14821,57914,0346,9676,1405,8385,1174,8354,6362,8182,8092,7962,1311,6901,286317โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”
Spec Version0.40.60.2โ€”0.21.0.00.30.10.1.00.51.0.0โ€”โ€”โ€”0.25โ€”โ€”โ€”โ€”โ€”โ€”0.1.01.02.01.01.12025-03-262.01.00.22.0
DescriptionMulti-agent conversation framework enabling groups of LLM agents to solve tasks through automated chat with customizable interaction patterns.Role-based multi-agent orchestration framework where specialized agents collaborate on complex tasks with defined roles and goals.Framework for building stateful multi-actor agent applications as computational graphs with cycles and branching.The Frontend Stack for Agents & Generative UI. React + Angular. Makers of the AG-UI ProtocolGoogle-led open protocol for agent-to-agent communication enabling discovery, negotiation, and task delegation between heterogeneous agent systems.An open protocol enabling communication and interoperability between opaque agentic applications built on diverse frameworks. A2A provides a common language for agents to discover each other's capabil...Virtual context management system that gives LLMs the ability to manage their own memory hierarchy, enabling unlimited context through paging.Lightweight multi-agent orchestration with handoffs and routines, emphasizing simplicity and agent-to-agent transfers.An open, lightweight, event-based protocol that standardizes how AI agents connect to user-facing applications. AG-UI provides the bi-directional runtime connection between agentic backends and fronte...Framework for adding structural, type, and quality guarantees to LLM outputs with validators and corrective actions.An open standard for internet-native payments built on the HTTP 402 status code. x402 enables AI agents and applications to pay for API access, content, and services with zero friction โ€” no accounts, ...A Model Context Protocol (MCP) server and CLI that provides tools for agent use when working on iOS and macOS projects.Model Context Protocol Server for Mobile Automation and Scraping (iOS, Android, Emulators, Simulators and Real Devices)Two conversational AI agents switching from English to sound-level protocol after confirming they are both AI agentsLong-term memory service for AI assistants with automatic summarization, entity extraction, and temporal awareness.Headless CLI client for stateful Agent Client Protocol (ACP) sessionsๅ…จ่ƒฝๅ่ฎฎๅˆ†ๆžๅทฅๅ…ท๏ผšๆต่งˆๅ™จๆŠ“ๅŒ… + MITM ไปฃ็† + ๆŒ‡็บนไผช่ฃ… + AI ๅˆ†ๆž + MCP Server ๆ— ็ผๅฏนๆŽฅ AI Agent/IDE | All-in-one protocol analysis toolkit โ€” built-in browser capture, MITM proxy, JS hooks, fingerprint spoofing, AI analysis & M...A framework-agnostic, git-native standard for defining AI agentsBring AI agents into Obsidian via Agent Client Protocol (ACP), such as Claude Code, Codex and Gemini CLI.connect any ai agents to solana protocolsWorld2Agent(W2A) is an open protocol that standardizes how Al agents perceive the real world.An open-source communication protocol that aims to become the HTTP of the Agentic Web era. ANP defines how intelligent agents connect through a three-layer architecture: decentralized identity (DID-WB...Universal open standard for interacting with AI agents, providing a common interface for agent communication regardless of underlying framework.Thread-based agent harness with tool execution, file handling, and persistent conversation management.Self-supervised alignment method where AI systems evaluate and revise outputs against a set of principles (a constitution).Security framework identifying top vulnerabilities in LLM applications including prompt injection, data leakage, and insecure output handling.An open-source standard for connecting AI applications to external systems like data sources, tools, and workflows. Think of it as a USB-C port for AI โ€” providing a standardized way to connect any AI ...Schema-based tool invocation where models output structured JSON matching declared function signatures.Native tool use capability allowing Claude to call external tools with structured inputs and process results.Pluggable memory subsystem supporting buffer, summary, entity, and knowledge-graph memory backends for conversation persistence.IEEE FIPA standard for inter-agent communication with performatives like inform, request, propose, and structured message envelopes.
Sourcegithub.com/microsoft/autogengithub.com/crewAIInc/crewAIgithub.com/langchain-ai/langgraphgithub.com/CopilotKit/CopilotKitgithub.com/google/A2Agithub.com/a2aproject/A2Agithub.com/cpacker/MemGPTgithub.com/openai/swarmgithub.com/ag-ui-protocol/ag-uigithub.com/guardrails-ai/guardrailsgithub.com/x402-foundation/x402github.com/getsentry/XcodeBuildMCPgithub.com/mobile-next/mobile-mcpgithub.com/PennyroyalTea/gibberlinkgithub.com/getzep/zepgithub.com/openclaw/acpxgithub.com/Mouseww/anything-analyzergithub.com/open-gitagent/gitagent-protocolgithub.com/RAIT-09/obsidian-agent-clientgithub.com/sendaifun/solana-agent-kitgithub.com/machinepulse-ai/world2agentgithub.com/agent-network-protocol/ANPagentprotocol.aiplatform.openai.com/docs/assistantsarxiv.org/abs/2212.08073owasp.org/www-project-top-10-for-large-language-momodelcontextprotocol.ioplatform.openai.com/docs/guides/function-callingdocs.anthropic.com/en/docs/build-with-claude/tool-python.langchain.com/docs/modules/memory/www.fipa.org/specs/fipa00061/SC00061G.html
Tags
multi-agentconversationgroup-chat
rolescollaborationtask-delegation
graphstatefulmulti-actor
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agent-discoverynegotiationinterop
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virtual-contextself-editingpaging
handoffsroutineslightweight
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validationoutput-qualitycorrective
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long-termsummarizationentity-extraction
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open-standarduniversalhttp-api
threadsrunstool-use
alignmentself-supervisionprinciples
securityvulnerabilitiesbest-practices
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json-schemastructured-outputfunctions
nativestructuredmulti-turn
buffersummaryentityknowledge-graph
performativesspeech-actsstandard
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