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Model Context Protocol
Agent infra
Open protocol for connecting models to tools and data
Agent2Agent Protocol
Agent infra
Open protocol for agents to talk to each other
Arize Phoenix
Agent infra
Open source tracing and evaluation for LLM apps
Composio
Agent infra
Tool and integration layer for agents
E2B
Agent infra
Cloud sandboxes for running agent-generated code
Firecrawl
Agent infra
Turns websites into clean data for LLMs
Langfuse
Agent infra
Open source LLM observability and prompt management
LangSmith
Agent infra
Tracing, evals and monitoring for LLM apps
Letta
Agent infra
Platform for agents with long-term memory
Tavily
Agent infra
Search API built for AI agents and RAG