# 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)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.growthepie.com/methodology-caveats/methodology-and-caveats/coverage-and-exclusions.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.