AgentRPC + MCPHub (mcp.nvim): Complete MCP Integration

AgentRPC is a MCP server that Connect to any function, any language, across network boundaries using AgentRPC..

When integrated with MCPHub (mcp.nvim), you can:

• Register functions across languages and networks
• Call functions across network boundaries
• List all registered functions across languages

This guide provides step-by-step instructions to set up AgentRPC in MCPHub (mcp.nvim), including configuration, examples, and troubleshooting.

What You'll Achieve

After completing this setup:

• AgentRPC will be fully integrated and operational
• You can use AgentRPC tools directly in MCPHub (mcp.nvim)
• All AgentRPC capabilities will be available for your workflows
• Access to 4 different tools

Prerequisites

Before starting, ensure you have:

• API secret from AgentRPC dashboard
• MCPHub (mcp.nvim) installed and configured
• Compatible operating system (Neovim 0.9+, Windows, macOS, Linux)

Installation

Step 1: Install AgentRPC

Configuration

Step 2: Configure MCPHub (mcp.nvim)

1. Open MCPHub (mcp.nvim) settings
2. Navigate to MCP server configuration
3. Add AgentRPC server with appropriate settings
4. Save and restart if needed

Examples

Once configured, you can use AgentRPC in MCPHub (mcp.nvim):

Multi-Language Microservices

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Ask MCPHub (mcp.nvim): "Call Python ML model from TypeScript app via Go API"

Expected Result: undefined

Cross-Cloud Function Calls

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Ask MCPHub (mcp.nvim): "Execute distributed data processing across three clouds"

Expected Result: undefined

Kubernetes Function Registry

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Ask MCPHub (mcp.nvim): "List available functions in production cluster"

Expected Result: undefined

Testing Your Setup

1. Launch MCPHub (mcp.nvim)
2. Verify AgentRPC is available in the tools list
3. Test basic AgentRPC functionality

Troubleshooting

Common Issues

Plugin Not Loading or Command Not Found

Symptoms: :MCPHub command not recognized, Plugin not appearing in :PlugStatus, No errors but plugin inactive

Cause: Plugin not properly installed or configuration error

Solution:

• Verify plugin is added to plugin manager configuration
• Run plugin manager install command (:PackerInstall, :PlugInstall, or Lazy auto-install)
• Check for errors in :messages after sourcing config
• Ensure dependencies (plenary.nvim, nui.nvim) are installed
• Restart Neovim completely

MCP Server Won't Start

Symptoms: Server status shows "Error", Red indicator on server, Server immediately stops after starting

Cause: Invalid server configuration or missing dependencies

Solution:

• Verify npx is installed and in PATH: npx --version
• Check MCP server package exists: npx -y @modelcontextprotocol/server-filesystem --help
• Review server configuration in setup() - verify command and args
• Check server logs in MCPHub interface for detailed error messages
• Ensure required environment variables are set (e.g., GITHUB_TOKEN)
• Test server manually in terminal: npx -y @modelcontextprotocol/server-filesystem /path

UI Not Displaying Correctly

Symptoms: Blank window, Garbled text, Layout issues, Missing borders

Cause: Terminal or Neovim rendering issues

Solution:

• Verify Neovim version is 0.9 or higher: nvim --version
• Try different border style in ui.border config ("single", "double", "rounded")
• Check terminal supports Unicode and 256 colors
• Update nui.nvim dependency to latest version
• Test with different colorscheme to rule out theme conflicts

Integration with Avante/CodeCompanion Not Working

Symptoms: AI assistant not seeing MCP tools, Tool calls failing, Integration not recognized

Cause: Integration not enabled or incompatible versions

Solution:

• Verify integration is enabled in config: integrations.avante = true
• Ensure Avante.nvim/CodeCompanion.nvim is installed and loaded
• Check versions are compatible - update both plugins to latest
• Restart Neovim after enabling integration
• Check :checkhealth for integration-specific warnings

Marketplace Not Loading

Symptoms: :MCPHubMarketplace shows empty list, Network error in marketplace, Timeout loading servers

Cause: Network connectivity issues or marketplace service unavailable

Solution:

• Verify internet connectivity
• Check firewall allows HTTPS connections
• Try again later if marketplace service is temporarily down
• Review proxy settings if behind corporate firewall
• Check :messages for detailed network error messages

Project-Local Config Not Loading

Symptoms: .mcphub.json ignored, Project servers not appearing, Only global config loaded

Cause: Config file location or format issues

Solution:

• Verify .mcphub.json is in project root (same directory as .git)
• Check JSON syntax is valid using jsonlint or similar tool
• Ensure file name is exactly .mcphub.json (case-sensitive)
• Restart Neovim after creating/modifying project config
• Check file permissions are readable

AgentRPC not appearing in MCPHub (mcp.nvim)

Symptoms: Server not listed, Tools not available

Cause: Configuration or installation issue

Solution:

• Verify configuration syntax
• Check AgentRPC installation
• Restart MCPHub (mcp.nvim)
• Check logs for error messages

Next Steps

Now that AgentRPC is integrated with MCPHub (mcp.nvim):

• Explore all AgentRPC capabilities through MCPHub (mcp.nvim)
• Check out other MCP servers that work with MCPHub (mcp.nvim)
• Join the MCP community for tips and support
• Consider contributing to AgentRPC development

Need Help?

• Search for AgentRPC documentation
• Check the MCPHub (mcp.nvim) MCP guide
• Join the MCP community discussions