> For the complete documentation index, see [llms.txt](https://docs.growthepie.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.growthepie.com/methodology-caveats/methodology-and-caveats/coverage-and-exclusions.md).

# Coverage And Exclusions

Coverage in growthepie is metric-specific and chain-specific. A chain can be present in `master.json` but still exclude a specific metric, so consumers should always check both the chain coverage and the metric coverage metadata.

## Key Facts

* Check `master.json.chains.{origin_key}.supported_metrics`
* Check `master.json.metrics.{metric_id}.supported_chains`
* Exclude chains whose `deployment` is `DEV` or `ARCHIVED`
* The live API changes over time, so prefer metadata over hardcoded lists

## Practical Guidance

* Validate `origin_key` before querying a metric detail endpoint
* Validate `metric_id` before generating API code or client stubs
* Treat legacy or inaccessible endpoints as unsupported until verified publicly

## Related Pages

* [Supported Chains And origin\_key](/entity-coverage-reference/entity-coverage-reference/supported-chains-and-origin-key.md)
* [Endpoint: master.json](/api-reference/api/master-json.md)