ChatSeekrFlow

Seekr provides AI-powered solutions for structured, explainable, and transparent AI interactions.

This notebook provides a quick overview for getting started with Seekr chat models. For detailed documentation of all ChatSeekrFlow features and configurations, head to the API reference.

Overview

ChatSeekrFlow class wraps a chat model endpoint hosted on SeekrFlow, enabling seamless integration with LangChain applications.

Integration Details

Class	Package	Local	Serializable	Package downloads	Package latest
ChatSeekrFlow	seekrai	❌	beta

Model Features

Tool calling	Structured output	JSON mode	Image input	Audio input	Video input	Token-level streaming	Native async	Token usage	Logprobs
✅	✅	✅	❌	❌	❌	✅	❌	✅	❌

Supported Methods

ChatSeekrFlow supports all methods of ChatModel, except async APIs.

Endpoint Requirements

The serving endpoint ChatSeekrFlow wraps must have OpenAI-compatible chat input/output format. It can be used for:

1. Fine-tuned Seekr models
2. Custom SeekrFlow models
3. RAG-enabled models using Seekr's retrieval system

For async usage, please refer to AsyncChatSeekrFlow (coming soon).

LangChain 入门：使用 ChatSeekrFlow

本 Notebook 将介绍如何在 LangChain 中使用 SeekrFlow 作为聊天模型。

设置

确保已安装必要的依赖项：

pip install seekrai langchain langchain-community

您还必须拥有 Seekr 的 API 密钥才能进行身份验证请求。

# Standard library
import getpass
import os

# Third-party
from langchain.prompts import ChatPromptTemplate
from langchain.schema import HumanMessage
from langchain_core.runnables import RunnableSequence

# OSS SeekrFlow integration
from langchain_seekrflow import ChatSeekrFlow
from seekrai import SeekrFlow

API Reference:ChatPromptTemplate | HumanMessage | RunnableSequence

API 密钥设置

您需要将 API 密钥设置为环境变量以进行身份验证。

运行下面的单元格。

或者在运行查询之前手动分配：

SEEKR_API_KEY = "your-api-key-here"

os.environ["SEEKR_API_KEY"] = getpass.getpass("Enter your Seekr API key:")

实例化

os.environ["SEEKR_API_KEY"]
seekr_client = SeekrFlow(api_key=SEEKR_API_KEY)

llm = ChatSeekrFlow(
    client=seekr_client, model_name="meta-llama/Meta-Llama-3-8B-Instruct"
)

调用

response = llm.invoke([HumanMessage(content="Hello, Seekr!")])
print(response.content)

Hello there! I'm Seekr, nice to meet you! What brings you here today? Do you have a question, or are you looking for some help with something? I'm all ears (or rather, all text)!

链式调用

prompt = ChatPromptTemplate.from_template("Translate to French: {text}")

chain: RunnableSequence = prompt | llm
result = chain.invoke({"text": "Good morning"})
print(result)

content='The translation of "Good morning" in French is:\n\n"Bonne journée"' additional_kwargs={} response_metadata={}

def test_stream():
    """Test synchronous invocation in streaming mode."""
    print("\n🔹 Testing Sync `stream()` (Streaming)...")

    for chunk in llm.stream([HumanMessage(content="Write me a haiku.")]):
        print(chunk.content, end="", flush=True)


# ✅ Ensure streaming is enabled
llm = ChatSeekrFlow(
    client=seekr_client,
    model_name="meta-llama/Meta-Llama-3-8B-Instruct",
    streaming=True,  # ✅ Enable streaming
)

# ✅ Run sync streaming test
test_stream()

🔹 Testing Sync `stream()` (Streaming)...
Here is a haiku:

Golden sunset fades
Ripples on the quiet lake
Peaceful evening sky

错误处理与调试

This guide is for developers who want to implement

# Define a minimal mock SeekrFlow client
class MockSeekrClient:
    """Mock SeekrFlow API client that mimics the real API structure."""

    class MockChat:
        """Mock Chat object with a completions method."""

        class MockCompletions:
            """Mock Completions object with a create method."""

            def create(self, *args, **kwargs):
                return {
                    "choices": [{"message": {"content": "Mock response"}}]
                }  # Mimic API response

        completions = MockCompletions()

    chat = MockChat()


def test_initialization_errors():
    """Test that invalid ChatSeekrFlow initializations raise expected errors."""

    test_cases = [
        {
            "name": "Missing Client",
            "args": {"client": None, "model_name": "seekrflow-model"},
            "expected_error": "SeekrFlow client cannot be None.",
        },
        {
            "name": "Missing Model Name",
            "args": {"client": MockSeekrClient(), "model_name": ""},
            "expected_error": "A valid model name must be provided.",
        },
    ]

    for test in test_cases:
        try:
            print(f"Running test: {test['name']}")
            faulty_llm = ChatSeekrFlow(**test["args"])

            # If no error is raised, fail the test
            print(f"❌ Test '{test['name']}' failed: No error was raised!")
        except Exception as e:
            error_msg = str(e)
            assert test["expected_error"] in error_msg, f"Unexpected error: {error_msg}"
            print(f"✅ Expected Error: {error_msg}")


# Run test
test_initialization_errors()

Running test: Missing Client
✅ Expected Error: SeekrFlow client cannot be None.
Running test: Missing Model Name
✅ Expected Error: A valid model name must be provided.

API 参考

• ChatSeekrFlow 类：langchain_seekrflow.ChatSeekrFlow
• PyPI 包：langchain-seekrflow

Related

• Chat model conceptual guide
• Chat model how-to guides