# Realms
Realm discovery and information endpoints
## List available realms
> Returns all healthy catalyst realms plus the main realm if available.\
> Each realm includes its server name, URL, and current user count.
```json
{"openapi":"3.1.0","info":{"title":"Realm Provider API","version":"1.0.0"},"tags":[{"name":"Realms","description":"Realm discovery and information endpoints"}],"servers":[{"url":"https://realm-provider.decentraland.org","description":"Production server"}],"security":[],"paths":{"/realms":{"get":{"summary":"List available realms","description":"Returns all healthy catalyst realms plus the main realm if available.\nEach realm includes its server name, URL, and current user count.\n","operationId":"getRealms","tags":["Realms"],"responses":{"200":{"description":"Successful response with list of realms","content":{"application/json":{"schema":{"type":"array","items":{"type":"object","description":"Represents a catalyst realm with its connection information","required":["serverName","url","usersCount"],"properties":{"serverName":{"type":"string","description":"Name of the realm server"},"url":{"type":"string","format":"uri","description":"Base URL of the realm"},"usersCount":{"type":"number","description":"Current number of users connected to this realm"}}}}}}},"400":{"description":"Bad request","content":{"application/json":{"schema":{"type":"object","properties":{"error":{"type":"string","description":"Error message"},"code":{"type":"integer","description":"Error code"}},"required":["error"]}}}},"500":{"description":"Internal server error","content":{"application/json":{"schema":{"type":"object","properties":{"error":{"type":"string","description":"Error message"},"code":{"type":"integer","description":"Error code"}},"required":["error"]}}}}}}}}}
```
## Get main realm about information
> Returns detailed About information for the main realm, including catalyst content server details,\
> comms configuration, and other realm-specific metadata.\
> \
> The response follows the About type from @dcl/catalyst-api-specs and the \[ADR-110]\(). The content server provided to the user will be one of the closest most updated nodes based on the user location.
```json
{"openapi":"3.1.0","info":{"title":"Realm Provider API","version":"1.0.0"},"tags":[{"name":"Realms","description":"Realm discovery and information endpoints"}],"servers":[{"url":"https://realm-provider.decentraland.org","description":"Production server"}],"security":[],"paths":{"/main/about":{"get":{"summary":"Get main realm about information","description":"Returns detailed About information for the main realm, including catalyst content server details,\ncomms configuration, and other realm-specific metadata.\n\nThe response follows the About type from @dcl/catalyst-api-specs and the [ADR-110](https://adr.decentraland.org/adr/ADR-110). The content server provided to the user will be one of the closest most updated nodes based on the user location. \n","operationId":"getMainAbout","tags":["Realms"],"parameters":[{"name":"catalyst","in":"query","description":"Preferred catalyst URL to use as the main realm. When this parameter is used, the prefer catalyst will be returned as the content server.","required":false,"schema":{"type":"string","format":"uri"}}],"responses":{"200":{"description":"Successful response with main realm about information","content":{"application/json":{"schema":{"type":"object","description":"Detailed information about the main realm, following the About type from @dcl/catalyst-api-specs.\nIncludes catalyst content server details, comms configuration, and realm metadata.\n","required":["healthy","content","configurations"],"properties":{"healthy":{"type":"boolean","description":"Whether the realm is healthy and operational"},"acceptingUsers":{"type":"boolean","description":"Whether the realm is currently accepting new users"},"content":{"type":"object","description":"Content server information","properties":{"healthy":{"type":"boolean"},"version":{"type":"string"},"commitHash":{"type":"string"},"publicUrl":{"type":"string","format":"uri"}}},"configurations":{"type":"object","description":"Realm configuration settings","properties":{"networkId":{"type":"number"},"globalScenesUrn":{"type":"array","items":{"type":"string"}},"scenesUrn":{"type":"array","items":{"type":"string"}}}},"comms":{"type":"object","description":"Communications server configuration","properties":{"healthy":{"type":"boolean"},"protocol":{"type":"string"},"adapter":{"type":"string","description":"Communications adapter being used"}}},"bff":{"type":"object","description":"Backend-for-frontend service information","properties":{"healthy":{"type":"boolean"},"userCount":{"type":"number"}}},"lambdas":{"type":"object","description":"Lambda functions service information","properties":{"healthy":{"type":"boolean"},"version":{"type":"string"},"publicUrl":{"type":"string","format":"uri"}}}}}}}},"400":{"description":"Bad request","content":{"application/json":{"schema":{"type":"object","properties":{"error":{"type":"string","description":"Error message"},"code":{"type":"integer","description":"Error code"}},"required":["error"]}}}},"500":{"description":"Internal server error","content":{"application/json":{"schema":{"type":"object","properties":{"error":{"type":"string","description":"Error message"},"code":{"type":"integer","description":"Error code"}},"required":["error"]}}}},"503":{"description":"Service unavailable when no catalysts are available","content":{"application/json":{"schema":{"type":"object","properties":{"error":{"type":"string"}}}}}}}}}}}
```
---
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```
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