Rust Requires Chilkat v11.4.0+

Automatic JS AI Tool Calling with Supporting JS Sources

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Demonstrates an automatic JavaScript tool function calling where JavaScript code can be loaded from additional scripts that don't include a tool registry. Rust

// ----------------------------------------------------------------------------------
// The Javascript file loaded here is shown at the bottom of this page.
// -----------------------------------------------------------------------------------

// In this example, we'll load the Javascript tool functions and registry from a file.
let sb_js = chilkat::StringBuilder::new();
if sb_js.load_file("qa_data/js_tools/toolset_5.js", "utf-8").is_err() {
    println!("{}", sb_js.last_error_text());
    return;
}

let ai = chilkat::Ai::new();

// Additional JavaScript code can be loaded into the AI object's internal JS engine
// by calling RegisterJsTools with evalOnly = true.
let sb_extra_js = chilkat::StringBuilder::new();
let _ = sb_extra_js.append("function getOrderTotal({ order_id }) { return 149.95; }");

// When evalOnly equals true, it tells Chilkat that no toolRegistry will be present.
// The purpose for doing the eval is to add function definitions to the global namespace.
// The value passed for allowAllKeyword is meaningless (not used) when evalOnly = true.
let mut eval_only = true;
let allow_all_keyword = true;
let _ = ai.register_js_tools(&sb_extra_js, eval_only, allow_all_keyword);

// Register the tools that will be made available to the AI.
eval_only = false;
let _ = ai.register_js_tools(&sb_js, eval_only, allow_all_keyword);

// The provider can be "openai", "google", "claude", "grok", "mistral", "custom", etc.
ai.set_provider("openai");
// Use your provider's API key.
ai.set_api_key("MY_API_KEY");
// Choose a model.
ai.set_model("gpt-5.6-luna");

// Tool function calling must always occur within a conversation.
let conversation_name = "convo_4".to_string();
let sys_message = "You are a helpful business assistant".to_string();
let dev_message = "Respond only with a information generated by a tool.".to_string();
let _ = ai.new_convo(&conversation_name, &sys_message, &dev_message);

// Provide inputs
let _ = ai.input_add_text("What is the total for order A123?");

// Send inputs, tool functions, etc. and ask for a "text" response.
// If the AI responds with tool calls, Chilkat automatically handles them by calling your JavaScript
// tool functions as directed by the AI, and sending results back to the AI until the final
// response is received.
if ai.ask("text").is_err() {
    println!("{}", ai.last_error_text());
    return;
}

// Get the AI response.
let sb_response = chilkat::StringBuilder::new();
let _ = ai.get_output_text_sb(&sb_response);
println!("{}", sb_response.get_as_string().unwrap_or_default());

JavaScript

// The namespace for the AI tool functions in this JavaScript source file.
Example = {};

// Tool functions must have only one argument, which should be an object.
// The function names used here must match the "name" in the toolRegistry below.

Example.get_order_total = function(arg) {
  // Here we are calling another function that is defined in a support (additional) JavaScript source
  // that was loaded in previous call to Ai.RegisterJsTools with evalOnly = true.
  return getOrderTotal(arg);
}

Example.multiply_numbers = function(arg) {
  return arg.a * arg.b;
}

// The inputSchema.type must ALWAYS be "object".
Example.toolRegistry = [
  {
    name: "get_order_total",
    description: "Calculate total cost of an order",
    parameters: {
      properties: {
        order_id: { type: "string", description: "The order ID" },
      }
    }
  },
  {
    name: "multiply_numbers",
    description: "Multiplies two numbers and returns the product.",
    parameters: {
      properties: {
        a: { type: "number", description: "First number" },
        b: { type: "number", description: "Second number" }
      }
    }
  }
];


Example.toolPermissions = [
	  {
	    name: "all",
	    perm: "sandbox",
	  }
	  		
	];
	
	
// Return the name of this toolset
// This tells Chilkat the namespace of this toolset.
"Example";