RAG-018RAG · Staying truthfullayaeval.ClaimSupport

Claim Support

Is this single claim backed by the evidence?

Simulation state:

When it passes

Backed.

Threshold satisfied: evaluation score >= 0.50.

When it fails

Not backed.

Violation detected: execution flagged for human review or fallback routing.

SDK Specification

Parameter	Value	Description
Class	ClaimSupport	Python evaluator class in layaeval
Required Fields	"claim", "evidence"	Arguments expected in the call signature
Default Threshold	>= 0.50	Passes when quality score is at or above this value
Category	RAG Evaluation	Staying truthful (Does every line come from the pages, with nothing made up?)

Python Example

pip install layaeval

claim-support.py

1from layaeval import ClaimSupport
2
3metric = ClaimSupport(threshold=0.50)  # passes at or above 0.50
4
5res = metric(
6    claim="Paris is the capital of France.",
7    evidence="Paris is the capital and largest city of France.",
8)
9
10print(res.passed, res.value, res.confidence)