Protocols

gRPC Protocol

Protocol

86

Trust score

High-performance RPC framework using Protocol Buffers for efficient agent-to-agent communication and service invocation.

IBM Watson Agent Framework

ProtocolFULL AUTO

84

Trust score

IBM's enterprise framework for building autonomous agents with native ACP support and semantic multi-agent dialogue capabilities.

ACP (Agentic Commerce Protocol)

Protocol

83

Trust score

Protocol rail for secure agent-mediated commerce flows with explicit checkout and payment confirmation controls.

Agent-to-Agent Protocol (A2A)

Protocol

82

Trust score

Google-originated open protocol for agent-to-agent communication. Standardizes task delegation, capability discovery, and result passing between autonomous agents.

Model Context Protocol (MCP)

ProtocolHUMAN IN LOOP

81

Trust score

Open standard from Anthropic that standardizes how AI agents connect to business tools and data sources through a universal interface using JSON-RPC 2.0 communication.

OpenAI Function Calling

ProtocolFULL AUTO

80

Trust score

OpenAI's specification for enabling language models to call external functions and APIs with structured JSON schemas and natural language descriptions.

OpenAPI 3.1

Protocol

79

Trust score

The HTTP API specification standard. Version 3.1 adds JSON Schema 2020-12 alignment. Used as the base description layer for most MCP server definitions.

Agent-to-Agent Protocol (A2A)

ProtocolHUMAN IN LOOP

79

Trust score

Protocol launched by Google that enables secure cross-organizational agent communication through agent cards, signed messages, and structured metadata for trust and routing.

AGNTCY

Protocol

79

Trust score

Open protocol/network initiative focused on interoperable multi-agent communication and discovery.

Model Context Protocol (MCP)

ProtocolNEEDS APPROVAL

79

Trust score

Anthropic-originated open standard for connecting AI models to tools and data sources. Now maintained by the Linux Foundation's Agentic AI Foundation. 75+ connectors across major AI platforms.

LangChain Tool Integration

ProtocolFULL AUTO

78

Trust score

Framework for integrating tools and APIs with language models, supporting structured tool definitions and agent-based tool invocation.

Apache Kafka Protocol

Protocol

78

Trust score

Distributed event streaming platform enabling asynchronous agent-to-agent communication and event-driven agent coordination.

GraphQL Schema Definition

Protocol

77

Trust score

Query language and schema specification that enables agents to understand and invoke GraphQL APIs with structured type definitions.

Pydantic Tool Schema

ProtocolFULL AUTO

76

Trust score

Python library for defining and validating tool schemas using type hints, enabling structured tool definitions for AI agents.

Anthropic Tool Use

ProtocolNEEDS APPROVAL

75

Trust score

Anthropic's tool use specification that enables Claude models to interact with external tools and APIs through structured schemas and JSON-based communication.

Agent-to-Human Protocol (A2H)

ProtocolHUMAN IN LOOP

74

Trust score

Emerging standard for structured handoffs from autonomous agents to human reviewers. Covers escalation triggers, context packaging, and response routing.

Agent Communication Protocol (ACP)

ProtocolFULL AUTO

74

Trust score

REST-based protocol developed by IBM Research that enables autonomous AI agents to communicate and coordinate with one another using structured messages and semantic dialogue.

WebSocket Protocol

Protocol

73

Trust score

Bidirectional communication protocol enabling real-time agent-to-agent messaging and persistent connections for agent coordination.

AMQP Protocol

Protocol

73

Trust score

Advanced Message Queuing Protocol for reliable agent-to-agent messaging and task coordination in distributed systems.

OpenAPI Specification

ProtocolFULL AUTO

71

Trust score

Industry standard for describing REST APIs that enables AI agents to understand and invoke API endpoints through structured schema definitions.

OASIS MQTT Protocol

Protocol

71

Trust score

Lightweight publish-subscribe messaging protocol used for agent-to-agent communication in IoT and distributed agent systems.

WASM Component Model

Protocol

67

Trust score

Standard for composable WebAssembly components enabling agents to load and invoke tools as portable, sandboxed modules.

JSON-RPC 2.0

ProtocolFULL AUTO

67

Trust score

Lightweight remote procedure call protocol specification used by MCP and A2A for standardized message formatting between agents and tools.

Agent Communication Protocol (ACP)

ProtocolFULL AUTO

66

Trust score

IBM-led protocol for standardized agent communication. REST-based, multi-framework compatible. Companion to MCP for agent runtime communication.