“Visual workflow automation | n8n”
“An agent can invoke another workflow as a tool, use custom tools defined with JSON schemas, or access external MCP servers.”
“CrewAI | Custom tools, reusable tool classes, agent delegation | Teams of specialized agents”
“Salesforce business processes | Agentforce”
“You can expose your own Apex business logic as tools that agents can invoke.”
“Microsoft enterprise ecosystem | Copilot Studio / Agent Framework”
“Lets you create enterprise agents with custom actions and connectors, without having to implement your own orchestration engine.”
“Dify | Custom tools, API integrations and plugins”
“Complex multi-agent workflows | LangGraph”
“Excellent if you want to control exactly when an agent invokes a tool, how state is maintained, and how execution branches.”
“Maximum programming flexibility | OpenAI Agents SDK”
“You can turn virtually any Python function into a callable tool, define custom JSON-schema tools, or connect an MCP server.”
“It also supports deferred tool discovery for large tool catalogs.”
“Microsoft Agent Framework: Supports both custom function tools and local or hosted MCP integrations.”
“Supports both custom function tools and local or hosted MCP integrations.”
“Google ADK: Good for defining custom tools and composing agents, with support for external APIs and MCP.”
“Good for defining custom tools and composing agents, with support for external APIs and MCP.”
“Elastic Agent Builder: Lets you create tools through its UI or API and connect external MCP servers.”
“Lets you create tools through its UI or API and connect external MCP servers.”
“Reusable skills and agent capabilities | Claude Agent SDK”
“Particularly interesting if by skills you mean reusable packages of instructions and resources, rather than just API functions.”
“It also supports custom tools and MCP.”
“WSO2 Agent Builder | Custom tools, functions, HTTP integrations and MCP”
“Platform-independent custom tools | MCP”
“This avoids implementing the same integrations separately for every agent platform.”
“I'd lean toward C + MCP if you want to avoid vendor lock-in and reuse your custom capabilities across multiple agents.”