Quickstart

import asyncio
import os

from claude_agent_sdk import ClaudeSDKClient
from lmnr import Laminar, observe

Laminar.initialize(project_api_key=os.environ["LMNR_PROJECT_API_KEY"])

PROMPTS = [
    "Give me a one-line Python function to reverse a string.",
    "Explain backpressure in distributed systems in one sentence.",
    "What is the CAP theorem? Answer in one sentence.",
    "Write a single bash command to find all .py files modified in the last day.",
    "Why does TCP use three-way handshake? One sentence.",
    "Give me a one-line idiomatic replacement for `for item in arr: print(item)` in Python.",
    "Explain memoization in one sentence.",
    "What is a REST API? One sentence.",
    "What is an LLM hallucination? One sentence.",
    "One-line SQL to find top 5 users by order count.",
]


@observe(name="quickstart_agent")
async def ask(prompt: str) -> None:
    async with ClaudeSDKClient() as client:
        await client.query(prompt)
        async for _ in client.receive_response():
            pass


async def main() -> None:
    for p in PROMPTS:
        await ask(p)


if __name__ == "__main__":
    asyncio.run(main())

SELECT
    timestamp,
    trace_id,
    name,
    payload
FROM signal_events
WHERE name = 'checkout.completed'
  AND (
    simpleJSONExtractString(payload, 'error_type') = 'timeout'
    OR simpleJSONExtractRaw(payload, 'error_type') = 'timeout'
  )
  AND timestamp > now() - INTERVAL 7 DAY
ORDER BY timestamp DESC
LIMIT 200

SELECT
    timestamp,
    trace_id,
    JSONExtractFloat(payload, 'score') AS score,
    JSONExtractFloat(payload, 'latency_ms') AS latency_ms
FROM signal_events
WHERE name = 'agent_response_quality'
  AND JSONExtractFloat(payload, 'score') >= 0.9
  AND timestamp > now() - INTERVAL 30 DAY
ORDER BY score DESC

SELECT
    timestamp,
    trace_id,
    JSONExtract(payload, 'summary', 'String') AS summary,
    JSONExtract(payload, 'metrics', 'confidence', 'Float64') AS confidence,
    JSONExtract(payload, 'labels', 'Array(String)') AS labels
FROM signal_events
WHERE name = 'support.intent_classification'
  AND timestamp > now() - INTERVAL 14 DAY
ORDER BY timestamp DESC
LIMIT 100