import { query } from "@anthropic-ai/claude-agent-sdk";

for await (const message of query({
prompt: "Optimize my React app performance and track progress with todos",
// Re-enable TodoWrite, which this example monitors. Without it, the SDK uses
// Task tools instead and these tool_use blocks never appear.
options: { maxTurns: 15, env: { ...process.env, CLAUDE_CODE_ENABLE_TASKS: "0" } }
})) {
// Todo updates are reflected in the message stream
if (message.type === "assistant") {
for (const block of message.message.content) {
if (block.type === "tool_use" && block.name === "TodoWrite") {
const todos = block.input.todos;

console.log("Todo Status Update:");
todos.forEach((todo, index) => {
const status =
todo.status === "completed" ? "✅" : todo.status === "in_progress" ? "🔧" : "❌";
console.log(`${index + 1}. ${status} ${todo.content}`);
});
}
}
}
}

from claude_agent_sdk import query, ClaudeAgentOptions, AssistantMessage, ToolUseBlock

async for message in query(
prompt="Optimize my React app performance and track progress with todos",
# Re-enable TodoWrite, which this example monitors. Without it, the SDK uses
# Task tools instead and these tool_use blocks never appear.
options=ClaudeAgentOptions(max_turns=15, env={"CLAUDE_CODE_ENABLE_TASKS": "0"}),
):
# Todo updates are reflected in the message stream
if isinstance(message, AssistantMessage):
for block in message.content:
if isinstance(block, ToolUseBlock) and block.name == "TodoWrite":
todos = block.input["todos"]

print("Todo Status Update:")
for i, todo in enumerate(todos):
status = (
"✅"
if todo["status"] == "completed"
else "🔧"
if todo["status"] == "in_progress"
else "❌"
)
print(f"{i + 1}. {status} {todo['content']}")

import { query } from "@anthropic-ai/claude-agent-sdk";

class TodoTracker {
private todos: any[] = [];

displayProgress() {
if (this.todos.length === 0) return;

const completed = this.todos.filter((t) => t.status === "completed").length;
const inProgress = this.todos.filter((t) => t.status === "in_progress").length;
const total = this.todos.length;

console.log(`\nProgress: ${completed}/${total} completed`);
console.log(`Currently working on: ${inProgress} task(s)\n`);

this.todos.forEach((todo, index) => {
const icon =
todo.status === "completed" ? "✅" : todo.status === "in_progress" ? "🔧" : "❌";
const text = todo.status === "in_progress" ? todo.activeForm : todo.content;
console.log(`${index + 1}. ${icon} ${text}`);
});
}

async trackQuery(prompt: string) {
for await (const message of query({
prompt,
// Re-enable TodoWrite, which this tracker watches for.
options: { maxTurns: 20, env: { ...process.env, CLAUDE_CODE_ENABLE_TASKS: "0" } }
})) {
if (message.type === "assistant") {
for (const block of message.message.content) {
if (block.type === "tool_use" && block.name === "TodoWrite") {
this.todos = block.input.todos;
this.displayProgress();
}
}
}
}
}
}

// Usage
const tracker = new TodoTracker();
await tracker.trackQuery("Build a complete authentication system with todos");

from claude_agent_sdk import query, ClaudeAgentOptions, AssistantMessage, ToolUseBlock
from typing import List, Dict


class TodoTracker:
def __init__(self):
self.todos: List[Dict] = []

def display_progress(self):
if not self.todos:
return

completed = len([t for t in self.todos if t["status"] == "completed"])
in_progress = len([t for t in self.todos if t["status"] == "in_progress"])
total = len(self.todos)

print(f"\nProgress: {completed}/{total} completed")
print(f"Currently working on: {in_progress} task(s)\n")

for i, todo in enumerate(self.todos):
icon = (
"✅"
if todo["status"] == "completed"
else "🔧"
if todo["status"] == "in_progress"
else "❌"
)
text = (
todo["activeForm"]
if todo["status"] == "in_progress"
else todo["content"]
)
print(f"{i + 1}. {icon} {text}")

async def track_query(self, prompt: str):
async for message in query(
prompt=prompt,
# Re-enable TodoWrite, which this tracker watches for.
options=ClaudeAgentOptions(max_turns=20, env={"CLAUDE_CODE_ENABLE_TASKS": "0"}),
):
if isinstance(message, AssistantMessage):
for block in message.content:
if isinstance(block, ToolUseBlock) and block.name == "TodoWrite":
self.todos = block.input["todos"]
self.display_progress()


# Usage
tracker = TodoTracker()
await tracker.track_query("Build a complete authentication system with todos")

import { query } from "@anthropic-ai/claude-agent-sdk";

for await (const message of query({
prompt: "Optimize my React app performance",
})) {
if (message.type !== "assistant") continue;
for (const block of message.message.content) {
if (block.type !== "tool_use") continue;
if (block.name === "TaskCreate") {
const input = block.input as { subject: string };
console.log(`+ ${input.subject}`);
} else if (block.name === "TaskUpdate") {
const input = block.input as { taskId: string; status?: string };
if (input.status) console.log(`  ${input.taskId} -> ${input.status}`);
}
}
}

from claude_agent_sdk import query, AssistantMessage, ToolUseBlock

async for message in query(
prompt="Optimize my React app performance",
):
if not isinstance(message, AssistantMessage):
continue
for block in message.content:
if not isinstance(block, ToolUseBlock):
continue
if block.name == "TaskCreate":
print(f"+ {block.input['subject']}")
elif block.name == "TaskUpdate" and block.input.get("status"):
print(f"  {block.input['taskId']} -> {block.input['status']}")