# Custom JSON

URL: https://docs.nexart.io/docs/evidence-bridge/custom-json

Custom JSON is the generic Evidence Bridge entry point for systems with their own schema: define a deterministic mapping profile, then satisfy the eligibility rules of a supported evidence family.

Custom JSON is the generic Evidence Bridge entry point for systems without a predefined integration template. Users provide a sample source payload and define a deterministic mapping profile.

Custom JSON does not mean that any JSON can automatically become certified evidence. The mapped payload must still satisfy the semantic eligibility rules of a supported evidence family.

## Flow

```
Custom JSON -> Mapping Profile -> Evidence Eligibility -> AI Execution V2
```

```
Custom JSON -> Mapping Profile -> Evidence Eligibility -> Operational Execution V1
```

## When required semantics are missing

```
targetEligible = false
```

No CER is created. The NexArt Node is not called.

Review the required semantics for AI Execution V2 and Operational Execution before building a custom profile, and see Mapping profiles for the available transforms.