I believe that i am hitting rate limits

I’m stuck on Stage #FF2

I’ve tried getting my own openrouter api keys and testing with it (it works fine that way)

Here are my logs:

[your_program] entering loop with messages: [
[your_program]   {
[your_program]     "content": "Determine in how many months the chemical expires by reading README.md. Respond with only a number.",
[your_program]     "role": "user"
[your_program]   },
[your_program]   {
[your_program]     "content": "This is a simple python project.\n- The starting point of this project is app/init.py.\n- The file app/chemical.py contains chemical properties.",
[your_program]     "name": "ReadFile",
[your_program]     "role": "tool"
[your_program]   }
[your_program] ]
[tester::#FF2] timed out, test exceeded 45 seconds
[tester::#FF2] Test failed

And here’s a snippet of my code:

    loop {
        eprintln!(
            "entering loop with messages: {}",
            serde_json::to_string_pretty(&messages)?
        );
        let response: Value = client
            .chat()
            .create_byot(json!({
                "messages": messages,
                "model": get_model(),
                "tools": [
                    {
                        "type": "function",
                        "function": {
                            "name": "ReadFile",
                            "description": "Read the contents of a file",
                            "parameters": {
                                "type": "object",
                                "properties": {
                                    "file_path": {
                                        "type": "string",
                                        "description": "Path to the file to read"
                                    }
                                },
                                "required": ["file_path"]
                            }
                        }
                    }
                ]
            }))
            .await?;

        eprintln!(
            "received response: {}",
            serde_json::to_string_pretty(&response)?
        );

        if let Some(tool_calls) = response["choices"][0]["message"]["tool_calls"].as_array() {
            for tool_call in tool_calls {
                eprintln!(
                    "processing tool call: {}",
                    serde_json::to_string_pretty(tool_call)?
                );
                let name = tool_call["function"]["name"].as_str().unwrap();
                let arguments: Value =
                    serde_json::from_str(tool_call["function"]["arguments"].as_str().unwrap())?;

                if name == "ReadFile" {
                    let file_path = arguments["file_path"].as_str().unwrap();
                    let contents = std::fs::read_to_string(file_path)?;
                    messages.push(json!({
                        "role": "tool",
                        "name": name,
                        "content": contents
                    }));
                }
            }
        } else if let Some(content) = response["choices"][0]["message"]["content"].as_str() {
            eprintln!("no toolcall");
            eprintln!("assistant response content: {}", content);
            messages.push(json!({
                "role": "assistant",
                "content": content
            }));
            println!("{}", content);
            break;
        } else {
            eprintln!("Unexpected response format: {}", response);
            break;
        }
    }

Adding more context: In the logs, i received the response first time (agent calling the file tool) but i didn’t receive any response after Read tool sent the data.

It worked fine when i tested with my own openrouter key on my computer

Full logs:

Initiating test run...

⚡ This is a turbo test run. https://codecrafters.io/turbo

Running tests on your code. Logs should appear shortly...

[compile]    Compiling codecrafters-claude-code v0.1.0 (/app)
[compile]     Finished `release` profile [optimized] target(s) in 4.11s
[compile] Compilation successful.

[tester::#FF2] Running tests for Stage #FF2 (Implement the agent loop)
[tester::#FF2] Created README.md:
[tester::#FF2] [README.md] This is a simple python project.
[tester::#FF2] [README.md] - The starting point of this project is app/init.py.
[tester::#FF2] [README.md] - The file app/chemical.py contains chemical properties.
[tester::#FF2] Created app/chemical.py:
[tester::#FF2] [app/chemical.py] chemical_expiry_period = 22  # months
[tester::#FF2] Created app/init.py:
[tester::#FF2] [app/init.py] from chemical import chemical_expiry_period
[tester::#FF2] [app/init.py]
[tester::#FF2] [app/init.py] def main():
[tester::#FF2] [app/init.py]    print(f"Chemical expiry period: {chemical_expiry_period} months")
[tester::#FF2] [app/init.py]
[tester::#FF2] [app/init.py] if __name__ == "__main__":
[tester::#FF2] [app/init.py]    main()
[tester::#FF2] [app/init.py]
[tester::#FF2] $ ./your_program.sh -p 'Determine in how many months the chemical expires by reading README.md. Respond with only a number.'
[your_program]     Finished `release` profile [optimized] target(s) in 0.07s
[your_program] entering loop with messages: [
[your_program]   {
[your_program]     "content": "Determine in how many months the chemical expires by reading README.md. Respond with only a number.",
[your_program]     "role": "user"
[your_program]   }
[your_program] ]
[your_program] received response: {
[your_program]   "choices": [
[your_program]     {
[your_program]       "finish_reason": "tool_calls",
[your_program]       "index": 0,
[your_program]       "logprobs": null,
[your_program]       "message": {
[your_program]         "content": null,
[your_program]         "reasoning": null,
[your_program]         "refusal": null,
[your_program]         "role": "assistant",
[your_program]         "tool_calls": [
[your_program]           {
[your_program]             "function": {
[your_program]               "arguments": "{\"file_path\": \"README.md\"}",
[your_program]               "name": "ReadFile"
[your_program]             },
[your_program]             "id": "toolu_bdrk_01FtcusDZz8aqJQNgRrL9Mig",
[your_program]             "index": 0,
[your_program]             "type": "function"
[your_program]           }
[your_program]         ]
[your_program]       },
[your_program]       "native_finish_reason": "tool_use"
[your_program]     }
[your_program]   ],
[your_program]   "created": 1780591799,
[your_program]   "id": "gen-1780591799-bA4I5RjJY5lutwp48L11",
[your_program]   "model": "anthropic/claude-4.5-haiku-20251001",
[your_program]   "object": "chat.completion",
[your_program]   "provider": "Amazon Bedrock",
[your_program]   "service_tier": null,
[your_program]   "system_fingerprint": null,
[your_program]   "usage": {
[your_program]     "completion_tokens": 57,
[your_program]     "completion_tokens_details": {
[your_program]       "audio_tokens": 0,
[your_program]       "image_tokens": 0,
[your_program]       "reasoning_tokens": 0
[your_program]     },
[your_program]     "cost": 0.00086922,
[your_program]     "cost_details": {
[your_program]       "upstream_inference_completions_cost": 0.000285,
[your_program]       "upstream_inference_cost": 0.000878,
[your_program]       "upstream_inference_prompt_cost": 0.000593
[your_program]     },
[your_program]     "is_byok": false,
[your_program]     "prompt_tokens": 593,
[your_program]     "prompt_tokens_details": {
[your_program]       "audio_tokens": 0,
[your_program]       "cache_write_tokens": 0,
[your_program]       "cached_tokens": 0,
[your_program]       "video_tokens": 0
[your_program]     },
[your_program]     "total_tokens": 650
[your_program]   }
[your_program] }
[your_program] processing tool call: {
[your_program]   "function": {
[your_program]     "arguments": "{\"file_path\": \"README.md\"}",
[your_program]     "name": "ReadFile"
[your_program]   },
[your_program]   "id": "toolu_bdrk_01FtcusDZz8aqJQNgRrL9Mig",
[your_program]   "index": 0,
[your_program]   "type": "function"
[your_program] }
[your_program] entering loop with messages: [
[your_program]   {
[your_program]     "content": "Determine in how many months the chemical expires by reading README.md. Respond with only a number.",
[your_program]     "role": "user"
[your_program]   },
[your_program]   {
[your_program]     "content": "This is a simple python project.\n- The starting point of this project is app/init.py.\n- The file app/chemical.py contains chemical properties.",
[your_program]     "name": "ReadFile",
[your_program]     "role": "tool"
[your_program]   }
[your_program] ]
[tester::#FF2] timed out, test exceeded 45 seconds
[tester::#FF2] Test failed

Hey @arjav0703, looks like you’ve got past this stage. Do you happen to remember what was wrong? Would love to see if we can improve the tester / instructions.