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Installation

pip install "rail-score-sdk[telemetry]"

Setup

from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import BatchSpanProcessor
from opentelemetry.exporter.otlp.proto.grpc.trace_exporter import OTLPSpanExporter
from rail_score_sdk import RailScoreClient
from rail_score_sdk.telemetry import RAILTelemetry

# Configure OTEL exporter
provider = TracerProvider()
exporter = OTLPSpanExporter(endpoint="http://localhost:4317")
provider.add_span_processor(BatchSpanProcessor(exporter))
trace.set_tracer_provider(provider)

# Enable RAIL telemetry
rail = RailScoreClient(api_key="YOUR_RAIL_API_KEY")
RAILTelemetry.instrument(rail)

# All eval() calls now emit spans automatically
result = rail.eval(content="Your text here", mode="basic")

Span attributes

Every rail.eval() call emits a span with these attributes:
AttributeTypeDescription
rail.scorefloatOverall RAIL score
rail.confidencefloatScore confidence
rail.modestringbasic or deep
rail.credits_consumedfloatCredits charged
rail.from_cacheboolWhether result was cached
rail.dim.{name}.scorefloatPer-dimension score
rail.dim.{name}.confidencefloatPer-dimension confidence

Viewing traces

RAIL spans integrate with any OTEL-compatible backend: Jaeger, Tempo, Honeycomb, Datadog, New Relic, or Langfuse.
# Start a local Jaeger instance for development
docker run -p 16686:16686 -p 4317:4317 jaegertracing/all-in-one
Open http://localhost:16686 to view traces.