mcp-server-bash
minimalistic MCP server written in bash script
antonum
README
mcp-server-bash
Minimalistic MCP server written in shell script.
This repo is comlimentary to the article: Minimalistic MCP Server in bash script
The lifecycle of MCP server can be described in two phases. Initialization and Operation.
The mcp_add.sh implements all of the messages within this lifecicle, from the handshake to execution of the simple "add two numbers" tool.
To do the basic test methods right in CLI use:
# test tools/list method
echo '{"method":"tools/list","params":{},"jsonrpc":"2.0","id":2}' | bash mcp_add.sh | jq
# test math_addition tool
echo '{"jsonrpc":"2.0","id":20, "method":"tools/call","params":{"name":"addition","arguments":{"num1":"1","num2":"2"}}}' | bash mcp_add.sh | jq
LLM host configuration
JSON Configuration file for mcphost and Claude Desktop:
{
"mcpServers": {
"math": {
"command": "/Users/anton/code/mcp-server-bash/mcp_add.sh",
"args": []
}
}
}
Test with mcphost
Add execute to bash script:
chmod +x mcp_add.sh
Run mcphost with llama3.1 and tool configuration file
mcphost -m ollama:llama3.1:latest --config /Users/anton/code/mcp-server-bash/mcp.json
...
using math tool add 10 and 88
References
- Model Context Protocol https://www.anthropic.com/news/model-context-protocol
- mcphost https://github.com/mark3labs/mcphost
- jsonrpc specification: https://www.jsonrpc.org/specification
- mcp inspector https://github.com/wong2/mcp-cli
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