rageval-ai 0.2.2

RAG evaluation library — LLM-as-judge for hallucination detection, faithfulness, answer relevancy. Local or self-hosted. Alternative to ragas.

rageval-ai

Standalone RAG evaluation library — evaluate your RAG/LLM outputs with LLM-as-judge methodology.

Two modes:

• Local mode — No server needed, runs evaluation locally with your API key
• Server mode — Deploy FastAPI server, send traces from anywhere

Installation

pip install rageval-ai

---

Mode 1: Local Evaluation (No Server)

Set your API key once:

export OPENAI_API_KEY="sk-your-key"

Single Trace (3 lines)

from rageval_sdk import evaluate

result = evaluate("What is the capital of France?", "Paris.", ["Paris is the capital of France."])
print(result["overall_score"])  # 0.95

Batch Evaluation

from rageval_sdk import evaluate_batch

results = evaluate_batch([
    {"question": "What is RAG?", "answer": "Retrieval-Augmented Generation.", "contexts": ["RAG combines retrieval with generation."]},
    {"question": "What is Python?", "answer": "A programming language.", "contexts": ["Python was created by Guido van Rossum."]},
])

for r in results:
    print(f"Score: {r['overall_score']}")

Custom Provider (OpenRouter, Azure, etc.)

from rageval_sdk import evaluate, EvalConfig

config = EvalConfig(
    api_key="sk-or-...",
    base_url="https://openrouter.ai/api/v1",
    stage_1_model="qwen/qwen3-235b-a22b-2507",
    stage_2_model="qwen/qwen3-32b",
)

result = evaluate("Question?", "Answer.", ["Context."], config=config)

---

Mode 2: Self-Hosted Server

Deploy the FastAPI evaluation server on your own infrastructure, then send traces from any client.

1. Deploy Server

git clone https://github.com/CYBki/llm-evaluation.git
cd llm-evaluation

# Configure
cp .env.example .env
nano .env  # set your OPENAI_API_KEY and other settings

# Start
docker compose up -d

# Verify
curl http://localhost:8000/health

2. Send Traces via SDK

from rageval_sdk import RagEvalClient

client = RagEvalClient(
    api_url="http://your-server:8000",
    api_key="your-api-key",
)

# Submit trace for evaluation
result = client.ingest(
    question="What is the capital of France?",
    answer="The capital of France is Paris.",
    contexts=["Paris is the capital and largest city of France."],
)

# Get evaluation results
trace = client.get_trace(result["id"])
print(trace["evaluation"]["overall_score"])

3. Auto-Evaluate in Your RAG Pipeline

from rageval_sdk import RagEvalClient

client = RagEvalClient(api_url="http://your-server:8000", api_key="key")

def handle_query(query):
    answer, contexts = my_rag_pipeline(query)  # your existing code

    # Non-blocking: sends to server for background evaluation
    client.ingest(question=query, answer=answer, contexts=contexts)

    return answer  # user gets answer immediately

4. Webhook Notifications

client.ingest(
    question="Q",
    answer="A",
    contexts=["C"],
    webhook_url="https://your-app.com/webhook",  # results POSTed here when ready
)

---

Background Evaluation (Local, Non-blocking)

from rageval_sdk import RagEvaluator

evaluator = RagEvaluator(api_key="sk-...", max_workers=4)

for query in user_queries:
    answer, contexts = my_rag_pipeline(query)
    evaluator.submit(question=query, answer=answer, contexts=contexts)

results = evaluator.wait()
evaluator.shutdown()

---

Evaluation Metrics

Metric	Description
overall_score	Weighted composite score (0-1)
hallucination_score	Detects fabricated information
faithfulness	Answer grounded in context
answer_relevancy	Answer relevance to question
context_precision	Quality of retrieved context
context_recall	Coverage of necessary information
clarity	Answer clarity
coherence	Answer coherence
helpfulness	Answer helpfulness
completeness	Answer completeness
citation_check	Source citation validation

---

API Reference

Local Mode

Function	Description
evaluate(question, answer, contexts)	Evaluate single trace (sync)
evaluate_batch(traces)	Evaluate multiple traces in parallel
evaluate_trace(question, answer, contexts, config=)	Async version
RagEvaluator(max_workers=4)	Background evaluator
EvalConfig(api_key=, base_url=, ...)	Custom configuration

Server Mode

Method	Description
RagEvalClient(api_url, api_key)	Connect to server
client.ingest(question, answer, contexts)	Submit trace
client.get_trace(trace_id)	Get results
client.list_traces(limit, offset)	List all traces
client.health()	Check server health

---

License

MIT