The Ultimate Guide to Agent Development
Behind every production agent is a stack: a framework to orchestrate reasoning and tool calls, memory so it remembers context, observability to see what it did, and infrastructure to serve it reliably. This is the builder's toolkit.
Below you'll find agent frameworks and SDKs, development and deployment platforms, memory and vector stores, the Model Context Protocol (MCP) ecosystem, model-serving and MLOps, and the observability tools that make agents debuggable in the real world.
Agent Development by the numbers
1,849
Tools listed
21
Categories
98%
Free or freemium
295
With user reviews
Pricing mix
Free 1725Freemium 87Paid 14Contact 23
Biggest category: Skills (967 tools).
Types of Agent Development tools
- Skills967 tools
- MCP Servers593 tools
- AI Agents Frameworks73 tools
- AI Agent Development Platforms53 tools
- AI Agent Development Frameworks38 tools
- Agent Development25 tools
- AI Infrastructure & MLOps24 tools
- Observability20 tools
- Edge AI10 tools
- Model Serving8 tools
- Model Context Protocol (MCP)7 tools
- Agent Observability Tools6 tools
- AI Model Serving Platforms5 tools
- Blockchain Agent Frameworks5 tools
- AI Agent Memory4 tools
- Development Framework Agent4 tools
- Agent Memory2 tools
- Memory2 tools
- AI Framework1 tools
- Data Integration Agents1 tools
- Sandboxes1 tools
Featured Agent Development tools
2L
Letta
Framework for building stateful AI agents with long-term memory and continuous learning.
5.0 (6)
· AI Agent Memory3
KeywordsAI
Unified developer platform for building, monitoring, and scaling LLM applications.
5.0 (6)
· Observability4
Wildcard AI / agents.json
Open spec and platform that lets AI agents discover and call API workflows through an agents.json file.
5
Ceramic.ai
An AI infrastructure platform optimizing large-scale model training with enhanced efficiency and scalability.
Popular Agent Development tools
The top tools across all Agent Development categories.
