Duplicate labels in JSON parsing causing metric conflicts

[buzztekk]

I’m encountering an issue where my JSON contains duplicate labels with no unique identifier to distinguish them. The exporter fails with the error:

text
An error has occurred while serving metrics:
collected metric "litellm_endpoint_status_health" {
label:{name:"api_base" value:"deepseek-r1"}
label:{name:"model" value:"hosted_vllm"}
untyped:{value:1}
} was collected before with the same name and label values
Problem:

The JSON data has multiple entries with identical api_base and model labels.

There is no unique field (like an id) to differentiate them.

Questions:

Is there a way to automatically add a unique index (e.g., an incrementing counter) to each JSON node?
(For example: endpoint_id: "1", endpoint_id: "2", etc.)

If not, can I simply allow or suppress duplicate labels?
(Some exporters have flags like --allow-duplicate-metrics—does json_exporter support this?)

Workarounds I’ve considered (but need guidance on):

Modifying the JSON source (not always possible).

Using a custom template or script to inject uniqueness (if supported).

Any advice or configuration options to handle this?