WH

Hermes Agent - Ollama Server Check

Check for Ollama Server before hermes --tui Starts

Since Hermes doesn't warn you if you don't have an active local end point when you are set up to use a local model in the --tui mode, you would need a way to remind yourself if the ollama service is running before use.

One can certainly make the ollama server run on system start up, but this might excessive when you don't plan on using ollama for hermes all the time.

A technique to solve the issue of forgetting to start up the ollama server is to wrap the hermes command and peform the checks on it before hermes can execute.

hermes() {
    local requires_ollama=false

    # Check if --tui, --cli, or -c is in the arguments
    for arg in "$@"; do
        if [[ "$arg" == "--tui" ]] || [[ "$arg" == "--cli" ]] || [[ "$arg" == "-c" ]]; then
            requires_ollama=true
            break
        fi
    done

    # No arguments were passed means ollama is still required
    # because hermes defaults to using the --tui
    if [[ $# -eq 0 ]]; then
        set -- --tui
        requires_ollama=true
    fi

    # Only check/wait for Ollama if using TUI, CLI mode, or short -c option
    if [[ "$requires_ollama" == "true" ]]; then
        local max_wait=3
        local waited=0

        # Check if Ollama by checking the server url
        while ! curl -s http://localhost:11434/api/tags > /dev/null 2>&1; do
            if [[ $waited -ge $max_wait ]]; then
                echo "ERROR: Ollama not responding after $max_wait seconds" >&2
                echo "Please start ollama with: ollama serve" >&2
                return 1
            fi

            # Note: Fish 'set_color' is replaced here with plain text. 
            # For yellow text in Bash, you can use \e[33m as shown below (optional):
            # echo -ne "\e[33mWaiting for ollama... ($waited/$max_wait)\e[0m\n"
            echo "Waiting for ollama... ($waited/$max_wait)"

            sleep 1
            ((waited++))
        done

        # Ollama is ready
        if [[ $waited -gt 0 ]]; then
            # Note: Fish 'set_color green' removed. Optional color code below:
            # echo -e "\e[32mOllama is ready!\e[0m"
            echo "Ollama is ready!"
        fi
    fi

    # Call the actual 'hermes' binary with all arguments
    command hermes "$@"
}

Here is a fish shell version of the bash script.

function hermes
    # Check if --tui, --cli, or -c is in the arguments
    set requires_ollama false
    for arg in $argv
        if test "$arg" = "--tui" -o "$arg" = "--cli" -o "$arg" = "-c"
            set requires_ollama true
            break
        end
    end
    
    # No arguments were passed means ollama is still requred
    # because hermes defaults to using the --tui
    if test (count $argv) -eq 0
        set argv --tui
        set requires_ollama true
    end
    
    # Only check/wait for Ollama if using TUI, CLI mode, or short -c option
    if test "$requires_ollama" = true

        # Wait for ollama with specified timeout
        set max_wait 3
        set waited 0
        
        # Check if Ollama by checking the server url
        while not curl -s http://localhost:11434/api/tags > /dev/null 2>&1
            if test $waited -ge $max_wait
                echo "ERROR: Ollama not responding after $max_wait seconds" >&2
                echo "Please start ollama with: ollama serve" >&2
                return 1
            end
            
            echo "Waiting for ollama... ($waited/$max_wait)" | set_color yellow
            sleep 1
            math $waited + 1 | read waited
        end
        
        #  Ollama is ready
        if test $waited -gt 0
            echo "Ollama is ready!" | set_color green
        end
    end
    
    # Call the actual 'hermes' binary with all arguments
    command hermes $argv
end