Documentation Index
Fetch the complete documentation index at: https://cosmo-docs.wundergraph.com/llms.txt
Use this file to discover all available pages before exploring further.
Support for the “extensions” field in GraphQL Request JSON Payloads
For Query and Mutation
Cosmo Router supports sending the “extensions” field to Subgraphs. If a client sends an “extensions” field alongside a Query or Mutation, or alternatively as part of the “payload” of a Subscription Request, Cosmo Router will by default include the “extensions” field in all Subgraph requests.
This feature allows you to extend GraphQL in a very flexible way as defined by the GraphQL over HTTP specification.
Here’s an example on how this can be used:
{"query":"{hello}","extensions":{"token":"asd"}}
For initiating a subscription
Alternatively, this feature could be useful to send a token when initiating a subscription:
{"id":"1","type":"subscribe","payload":{"extensions":{"token":"asd"},"query":"subscription {\n currentTime {\n unixTime\n }\n}"}}
