GET
/
beacon
/
states
/
{state_id}
/
committees
curl --request GET \
  --url https://beacon-nd-422-757-666.p2pify.com/0a9d79d93fb2f4a4b1e04695da2b77a7/eth/v1/beacon/states/{state_id}/committees
{
  "data": [
    {
      "index": 123,
      "slot": 123,
      "validators": [
        123
      ]
    }
  ]
}

No response in the interactive API

The response to the call might be too big for the web app to handle, so if you are not getting it here, copy the CURL example and run in your terminal—this will work.

The eth/v1/beacon/states/{state_id}/committees method is a significant API endpoint in the Ethereum Beacon Chain. It provides comprehensive information about the committees for a given state. In the context of Ethereum, committees are groups of validators assigned to specific duties, such as proposing and attesting to blocks. Understanding the composition and assignments of these committees is crucial for validators and network participants, as it impacts their roles and responsibilities in the network’s consensus process.

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​
Parameters

  • {state_id}: This parameter specifies the state identifier for which the committee information is being requested. It can be a specific slot number, an epoch number, a block root, or special values like ‘genesis’ or ‘head’.

​
Response

  • array — list of committee objects.
    • Each object in the array represents a committee at the specified state, containing:
      • index — the index or identifier of the committee. This is used to distinguish different committees within the same epoch or state.
      • slot — the slot number at which the committee is assigned duties. Slots are discrete time intervals in the Beacon Chain when various operations occur.
      • validators — a list of validator indices that are members of this committee. These indices identify the specific validators assigned to the committee’s duties.

The eth/v1/beacon/states/{state_id}/committees method is vital for validators and network operators in the Ethereum ecosystem. It provides essential insights into how validators are grouped into committees and assigned duties, which is fundamental to the network’s operation and security.

Path Parameters

​
state_id
string
default:head
required

State identifier, e.g., 'head', 'finalized', 'genesis', or a specific slot number.

Query Parameters

​
epoch
integer

Epoch number

Example:

194213

​
index
integer

Committee index

Example:

1

​
slot
integer

Slot number

Response

200
application/json

Committee data successfully retrieved

The response is of type object.