init

app.py

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+# Chat agent using LlamaIndex SimpleChatEngine + Gradio
+from llama_index.core.agent.workflow import {
+    AgentWorkflow,
+    FunctionAgent,
+    ReactAgent,
+}
+from llama_index.llms.huggingface_api import HuggingFaceInferenceAPI
+
+def add(a: int, b: int) -> int:
+    """Adds two numbers together and returns the result."""
+    return a + b
+
+def subtract(a: int, b: int) -> int:
+    """Subtracts the second number from the first and returns the result."""
+    return a - b
+
+llm = HuggingFaceInferenceAPI(
+    model_name="Qwen/Qwen2.5-Coder-32B-Instruct",
+)
+
+calculator_agent = ReActAgent(
+    name="calculator_agent",
+    description="A calculator agent that can add and subtract numbers.",
+    tools=[add, subtract],
+    llm=llm,
+)
+
+agent = AgentWorkflow(
+    agents=[calculator_agent],
+    root_agent="calculator_agent",
+)
+
+response = agent.chat(user_msg="What is 10 + 5?")
+print(response)

requirements.txt

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+llama-index
+llama-index-vector-stores-chroma
+llama-index-llms-huggingface-api
+llama-index-embeddings-huggingface