> ## Documentation Index > Fetch the complete documentation index at: https://docs.beaconcha.in/llms.txt > Use this file to discover all available pages before exploring further. # Rewards > Provides status and reward information about sync committee duties for a specific slot for each validator. The validator filter is optional; if omitted, results include all validators assigned sync duties for the slot. This endpoint currently only supports finalized data. Use the reward endpoints for epoch based attestation rewards information. You can combine this endpoint with: - Find periods your validators were part in: [v2/ethereum/validators/sync-committee-periods](/api-reference/ethereum/validators/sync-committee-periods) - Sync committee overview: [v2/ethereum/sync-committee](/api-reference/ethereum/sync-committee/overview) ## OpenAPI ````yaml /v3/bundled.yaml post /api/v2/ethereum/slot/sync-committee-duties openapi: 3.0.4 info: title: External Service API version: 1.0.3 servers: - url: https://beaconcha.in description: Production API security: - ApiKeyAuth: [] paths: /api/v2/ethereum/slot/sync-committee-duties: post: tags: - Slot summary: Rewards description: > Provides status and reward information about sync committee duties for a specific slot for each validator. The validator filter is optional; if omitted, results include all validators assigned sync duties for the slot. This endpoint currently only supports finalized data. Use the reward endpoints for epoch based attestation rewards information. You can combine this endpoint with: - Find periods your validators were part in: [v2/ethereum/validators/sync-committee-periods](/api-reference/ethereum/validators/sync-committee-periods) - Sync committee overview: [v2/ethereum/sync-committee](/api-reference/ethereum/sync-committee/overview) operationId: GetSlotSyncCommitteeDuties requestBody: $ref: '#/components/requestBodies/slotOptionalValidatorChainCursorPageSize' responses: '200': $ref: '#/components/responses/SlotSyncCommittee' '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '404': $ref: '#/components/responses/NotFound' '405': $ref: '#/components/responses/MethodNotAllowed' '429': $ref: '#/components/responses/RateLimitExceeded' '500': $ref: '#/components/responses/InternalServerError' default: $ref: '#/components/responses/DefaultError' components: requestBodies: slotOptionalValidatorChainCursorPageSize: description: '`validator` is optional in this request body' content: application/json: schema: allOf: - type: object description: > Specify a slot using one of the slot number. Selecting by a consensus view may soon be available in a future update. properties: slot: $ref: '#/components/schemas/SlotByNumber' required: - slot - type: object properties: chain: $ref: '#/components/schemas/Chain' cursor: $ref: '#/components/schemas/Cursor' page_size: $ref: '#/components/schemas/PageSize' validator: $ref: '#/components/schemas/nullableValidatorSelector' required: - slot - chain example: slot: number: 2375680 chain: mainnet responses: SlotSyncCommittee: description: Successful response. content: application/json: schema: allOf: - $ref: '#/components/schemas/SlotSyncCommittee.ContainerList' - $ref: '#/components/schemas/PagingTemplate' description: >- Response containing detailed information about past or future sync committee duties. BadRequest: description: Bad Request content: application/json: schema: $ref: '#/components/schemas/Error' example: error: Bad request. Please check your input and try again. Unauthorized: description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/Error' example: error: Unauthorized. Please provide a valid API key. Forbidden: description: Forbidden content: application/json: schema: $ref: '#/components/schemas/Error' example: error: >- endpoint not allowed for your subscription tier. upgrade your subscription at https://beaconcha.in/pricing. NotFound: description: Not Found content: application/json: schema: $ref: '#/components/schemas/Error' example: error: The requested resource was not found. MethodNotAllowed: description: Method Not Allowed content: application/json: schema: $ref: '#/components/schemas/Error' example: error: 'method not allowed: GET. all public API endpoints use POST.' RateLimitExceeded: description: Rate Limit Exceeded content: application/json: schema: $ref: '#/components/schemas/Error' example: error: Rate limit exceeded. Please try again later. InternalServerError: description: Internal Server Error content: application/json: schema: $ref: '#/components/schemas/Error' example: error: internal server error. please try again later. DefaultError: description: An unexpected error response. content: application/json: schema: $ref: '#/components/schemas/Error' example: error: An unexpected error occurred. schemas: SlotByNumber: title: Number type: object properties: number: $ref: '#/components/schemas/Slot' required: - number Chain: type: string enum: - mainnet - hoodi default: mainnet description: The Ethereum chain to query. Cursor: type: string description: >- Cursor value for pagination. See our [pagination guide](/api/pagination) for more details. default: '' PageSize: type: integer description: The number of items to return per page. minimum: 1 maximum: 10 default: 10 nullableValidatorSelector: description: >- `validator` is optional in this request body. If not provided, results will be unfiltered. nullable: true default: null allOf: - $ref: '#/components/schemas/validatorsSelector' SlotSyncCommittee.ContainerList: type: object properties: data: type: array items: $ref: '#/components/schemas/SlotSyncCommittee.Data' required: - data PagingTemplate: type: object properties: paging: $ref: '#/components/schemas/Paging' Error: type: object properties: error: type: string Slot: type: integer minimum: 0 description: Slot by number. validatorsSelector: description: >- Free selectors available to all users: - validator_identifiers: One or more validator indices or public keys to filter by. - dashboard_id: Your beaconcha.in dashboard ID (requires a free account). **Premium selectors** for Scale & Enterprise plans (https://beaconcha.in/pricing): - withdrawal: The validator's withdrawal credential or the Ethereum wallet address used for withdrawals. - deposit_address: The Ethereum wallet address used for the validator's deposit. - entity: The name of the assigned entity (e.g., "Lido", "Coinbase"). Optionally include `sub_entity` for more specific filtering. Matching is case-sensitive. Note: The set of validators matched by `deposit_address` and `withdrawal` selectors is updated once per epoch (~6.4 minutes). Newly deposited validators may take up to one epoch to appear in query results. Note: The set of validators matched by `entity` selector is updated once per day. oneOf: - $ref: '#/components/schemas/ValidatorsByIdentifiers' - $ref: '#/components/schemas/ValidatorsByDashboard' - $ref: '#/components/schemas/ValidatorsByDeposit' - $ref: '#/components/schemas/ValidatorsByWithdrawal' - $ref: '#/components/schemas/ValidatorsByEntity' SlotSyncCommittee.Data: type: object properties: validator: $ref: '#/components/schemas/validator' reward: $ref: '#/components/schemas/rewardBreakdown' description: > This field returns only finalized rewards. If the rewards are not finalized, the value will be null. nullable: true status: $ref: '#/components/schemas/SyncDutyStatus' finality: $ref: '#/components/schemas/FinalityParams' required: - validator - status - finality Paging: type: object properties: next_cursor: description: >- Cursor to the next page of results. See our [pagination guide](/api/pagination) for more details. If empty, there are no more pages to fetch. type: string ValidatorsByIdentifiers: type: object title: Indices/Pubkeys properties: validator_identifiers: $ref: '#/components/schemas/validatorIndexPublicKeys' required: - validator_identifiers ValidatorsByDashboard: type: object title: Dashboard properties: dashboard_id: $ref: '#/components/schemas/dashboardID' group_id: $ref: '#/components/schemas/dashboardGroupID' required: - dashboard_id ValidatorsByDeposit: type: object title: 💎 Deposit properties: deposit_address: $ref: '#/components/schemas/ExecutionLayerAddress' required: - deposit_address ValidatorsByWithdrawal: type: object title: 💎 Withdrawal properties: withdrawal: $ref: '#/components/schemas/AddressOrCredential' required: - withdrawal ValidatorsByEntity: type: object title: 💎 Entity description: > Select validators by their assigned entity (e.g., staking provider) and optionally a sub-entity. Entity and sub-entity names are matched exactly and are case-sensitive. properties: entity: type: string description: > The name of the entity to filter validators by (e.g., "Lido", "Coinbase"). Matching is case-sensitive; use the exact name as returned by the entities overview endpoint. sub_entity: type: string description: > Optional sub-entity name to further filter validators within the entity. Matching is case-sensitive; use the exact name as returned by the sub-entities overview endpoint. required: - entity validator: type: object properties: index: allOf: - $ref: '#/components/schemas/validatorIndex' nullable: true public_key: $ref: '#/components/schemas/validatorPublicKey' rewardBreakdown: allOf: - $ref: '#/components/schemas/rewardBreakdownBase' SyncDutyStatus: type: string description: > Indicates the status of the sync committee duty assigned to the validator for the specified slot. Possible values: - "scheduled": The duty is scheduled for a future slot or the current head slot. Duties can only be performed starting from the next slot. - "success": The validator successfully performed the sync committee duty for this slot. - "missed": The validator missed the assigned sync committee duty for this slot. For future slots, the status will always be "scheduled". For the current head slot, the status is also "scheduled" since duties are only eligible for inclusion in the next slot. enum: - success - missed - scheduled FinalityParams: type: string description: | Indicates the finality status of the data provided. - Finalized data cannot be changed without slashing at least one-third of all validators, providing strong economic guarantees. - Data marked as not_finalized does not have this guarantee and may still change. enum: - not_finalized - finalized validatorIndexPublicKeys: description: > An array containing either validator indices or public keys. Index and public key can be mixed in the same array. Subscribed users (Hobbyist, Business, and Scale tiers) can include up to 100 entries; free trial users and legacy subscription users (Sapphire, Emerald, Diamond) are limited to 20. type: array items: $ref: '#/components/schemas/validatorIndexPublicKey' minItems: 1 maxItems: 100 dashboardID: description: > beaconcha.in dashboard ID. You can find your dashboard ID in the URL of your dashboard page on beaconcha.in (e.g., https://beaconcha.in/dashboard/12345). type: integer x-go-type: '*int' minimum: 0 dashboardGroupID: description: >- Optional beaconcha.in dashboard group ID. If no group ID is provided, all validators in the dashboard are considered. type: integer minimum: 0 nullable: true ExecutionLayerAddress: type: string pattern: ^0x[a-fA-F0-9]{40}$ description: A standard Ethereum address (20-byte hex string with 0x prefix). AddressOrCredential: type: string pattern: ^(0x)?[0-9a-fA-F]{40}$|^(0x)?0[012][0-9a-fA-F]{62}$ description: > Either an execution layer address (20-byte hex string with 0x prefix) or a full 32-byte withdrawal credential. validatorIndex: description: Validator Index type: integer minimum: 0 validatorPublicKey: type: string description: Public key of a validator pattern: ^0x[a-fA-F0-9]{96}$ rewardBreakdownBase: type: object properties: total: $ref: '#/components/schemas/wei' description: > Net result for this duty (reward minus penalty). Positive values indicate net rewards earned; negative values indicate net penalties. reward: $ref: '#/components/schemas/wei' description: > Reward is the amount earned for correctly and promptly performing duties. Represents the positive balance increase received. penalty: $ref: '#/components/schemas/wei' description: > Penalty is the amount deducted from your balance for missing or incorrectly performing duties. This is always a positive value, representing the loss incurred in addition to missed rewards. When missing a duty, you earn no reward and also incur a penalty, resulting in a net negative impact on your balance. missed_reward: $ref: '#/components/schemas/wei' description: > Missed rewards are the potential earnings lost due to missed or delayed duties that you could have earned if performed correctly. This value shows the difference between the maximum possible reward and the actual reward received. Returned as a positive value representing unearned rewards. required: - total - reward - penalty - missed_reward validatorIndexPublicKey: oneOf: - $ref: '#/components/schemas/validatorIndex' - $ref: '#/components/schemas/validatorPublicKey' wei: type: string description: Amount in wei (1 ETH = 10^18 wei) pattern: ^(0|-?[1-9][0-9]*)$ securitySchemes: ApiKeyAuth: type: http scheme: bearer description: >- Authorization header with value: Bearer YOUR_TOKEN. Refer to the [API Keys](/api/overview#api-keys) section to create your API key. ````