projectkate 0.2.0

KATE SDK — local-first auto-eval for AI agents

KATE SDK

Auto-eval and observability for AI agents. Trace every LLM call, run evaluations, and catch regressions before they ship.

Install

pip install projectkate

Optional instrumentation extras

pip install projectkate[openai]                # OpenAI
pip install projectkate[anthropic-instrument]  # Anthropic
pip install projectkate[langchain]             # LangChain / LangGraph
pip install projectkate[mistral]               # Mistral
pip install projectkate[vertexai]              # Vertex AI
pip install projectkate[google-genai]          # Google GenAI
pip install projectkate[crewai]                # CrewAI
pip install projectkate[all]                   # All supported providers

Quick Start

Trace mode — instrument your agent

import projectkate

# Initialize — reads KATE_API_URL, KATE_API_KEY, KATE_AGENT_ID from env
projectkate.init()

@projectkate.trace("summarize")
def summarize(text: str) -> str:
    return client.messages.create(
        model="claude-sonnet-4-20250514",
        messages=[{"role": "user", "content": f"Summarize: {text}"}],
    ).content[0].text

async with projectkate.run() as ctx:
    result = summarize("Today's top news stories...")
    ctx.output(result)

Management client — programmatic platform access

from projectkate import KateClient

async with KateClient(api_key="kate_...") as kate:
    # List your agents
    agents = await kate.agents.list()

    # Check eval results for a run
    evals = await kate.evals.get_run_evals(run_id="...")

    # Publish an artifact
    await kate.artifacts.publish(artifact_id="...")

    # Check wallet balance
    balance = await kate.wallet.get_balance()

How KATE Compares

Feature	KATE	LangSmith	Arize Phoenix
Built for agentic loops	Yes	Partial (RAG-focused)	Partial
Auto-instrumentation	Yes, zero-config	Manual setup	Manual setup
Hallucination detection	Built-in	Separate tool needed	Built-in
Open source	Yes	No	Yes
Framework agnostic	Yes	LangChain-first	Yes
Self-hostable	Yes	No	Yes

Local Eval (no server needed)

Run evaluations locally against your agent with zero infrastructure:

from projectkate.local import LocalEvalRunner

runner = LocalEvalRunner(agent_fn=my_agent)
results = await runner.run(test_cases=[
    {"input": "Summarize the news", "expected": "A concise summary..."},
])
runner.print_results(results)

Documentation

• Docs — guides, API reference, and examples
• Examples — runnable example agents

License

Apache 2.0 — see LICENSE.