version: "1.0.1" name: evaluate-openai description: Sets up evaluation of an OpenAI Java SDK agent using Dokimos. Use this skill when the user wants to evaluate, test, or benchmark an agent built directly on the OpenAI Java SDK that uses tools (function calling), or assess its tool call correctness, task completion, or argument hallucination. Also use when the user mentions OpenAI function calling evaluation or evaluating an OpenAI tool-calling loop with Dokimos.

Evaluate an OpenAI Java SDK Agent

Set up Dokimos agent evaluation for an agent built directly on the OpenAI Java SDK (com.openai:openai-java). The user will describe their agent and evaluation goals via $ARGUMENTS.

Where things live

• OpenAI support utilities: dev.dokimos:dokimos-openai (dev.dokimos.openai.OpenAiSupport)
• Runnable example: dokimos-examples/src/main/java/dev/dokimos/examples/basic/OpenAIAgentEvaluationExample.java
• Agent data model and evaluators: dokimos-core/src/main/java/dev/dokimos/core/agents/ and .../evaluators/agents/

Add the dev.dokimos:dokimos-openai dependency (it brings in dokimos-core). It expects you to supply your own com.openai:openai-java version.

The support class

OpenAiSupport converts the SDK's tool calls into Dokimos ToolCalls and tool definitions:

• `toAgentTrace(ChatCompletionMessage message, Function<String,String> resultLookup)`: a full trace from a message; resultLookup maps a tool-call id to its result. Non-function (custom) tool calls are skipped.
• `toToolCall(ChatCompletionMessageToolCall toolCall, String result)`: one function tool call plus the result you got from executing it.
• `toToolCalls(ChatCompletionMessage message, Function<String,String> resultLookup)`: all function tool calls on a message.
• `toToolDefinitions(List<ChatCompletionTool> tools)`: the tools the agent was given, so the validity and reliability evaluators can run.

Arguments are parsed from the model's JSON; if they cannot be parsed they default to an empty map rather than failing the trace.

Pattern: capture the trace in your tool-calling loop

AgentTrace.Builder trace = AgentTrace.builder();
 
for (int i = 0; i < MAX_TURNS; i++) {
    var message = client.chat().completions().create(params).choices().get(0).message();
    var toolCalls = message.toolCalls().orElse(List.of());
    if (toolCalls.isEmpty()) {
        trace.finalResponse(message.content().orElse(""));
        break;
    }
    for (var toolCall : toolCalls) {
        String result = executeTool(toolCall.asFunction().function().name());
        trace.addToolCall(OpenAiSupport.toToolCall(toolCall, result));
        // feed the result back to the model as a tool message, then continue the loop
    }
}
 
AgentTrace agentTrace = trace.build();

Evaluate the trace

List<ToolDefinition> tools = List.of(
    ToolDefinition.of("search_flights", "Search for flights", Map.of(
        "type", "object",
        "properties", Map.of("origin", Map.of("type", "string")),
        "required", List.of("origin")))
);
 
EvalTestCase testCase = agentTrace.toTestCase("Find flights from NYC to Paris", tools);
 
var validity = ToolCallValidityEvaluator.builder().build().evaluate(testCase);
var correctness = ToolCorrectnessEvaluator.builder().build().evaluate(testCase);

Steps

1. Understand from $ARGUMENTS what the agent does and which tools (functions) it exposes.
2. Add the dev.dokimos:dokimos-openai dependency if it is not already present.
3. In the tool-calling loop, capture each executed tool call with OpenAiSupport.toToolCall(...) and set the final response.
4. Define a ToolDefinition for each function (JSON Schema with "type", "properties", "required") so the validity and reliability evaluators can run.
5. Build the test case with trace.toTestCase(input, tools) and run the agent evaluators. Start with the deterministic ones (validity, correctness), then add LLM-based ones.
6. For the full agent evaluator set and the Experiment-across-a-dataset pattern, use the evaluate-agent skill.