openapi: 3.0.3
info:
  description: Low-latency indexed account, token, and public-key lookup APIs for wallets and explorers. Embedded portal clients may forward an optional `apiKey` query parameter, but the public FastNEAR API does not require it.
  title: FastNEAR accounts Next Light Client Block API
  version: 3.0.3
servers:
- description: Mainnet
  url: https://api.fastnear.com
- description: Testnet
  url: https://test.api.fastnear.com
tags:
- name: Next Light Client Block
paths:
  /next_light_client_block:
    post:
      description: Returns the next light client block.
      operationId: next_light_client_block
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/JsonRpcRequest_for_next_light_client_block'
        required: true
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/JsonRpcResponse_for_RpcLightClientNextBlockResponse_and_RpcLightClientNextBlockError'
      tags:
      - Next Light Client Block
components:
  schemas:
    CryptoHash:
      type: string
    RpcLightClientNextBlockRequest:
      properties:
        last_block_hash:
          $ref: '#/components/schemas/CryptoHash'
      required:
      - last_block_hash
      title: RpcLightClientNextBlockRequest
      type: object
    JsonRpcRequest_for_next_light_client_block:
      properties:
        id:
          type: string
        jsonrpc:
          type: string
        method:
          enum:
          - next_light_client_block
          type: string
        params:
          $ref: '#/components/schemas/RpcLightClientNextBlockRequest'
      required:
      - jsonrpc
      - id
      - params
      - method
      title: JsonRpcRequest_for_next_light_client_block
      type: object
    JsonRpcResponse_for_RpcLightClientNextBlockResponse_and_RpcLightClientNextBlockError:
      oneOf:
      - properties:
          result:
            $ref: '#/components/schemas/RpcLightClientNextBlockResponse'
        required:
        - result
        type: object
      - properties:
          error:
            $ref: '#/components/schemas/ErrorWrapper_for_RpcLightClientNextBlockError'
        required:
        - error
        type: object
      properties:
        id:
          type: string
        jsonrpc:
          type: string
      required:
      - jsonrpc
      - id
      title: JsonRpcResponse_for_RpcLightClientNextBlockResponse_and_RpcLightClientNextBlockError
      type: object
    NearToken:
      type: string
    ValidatorStakeViewV1:
      properties:
        account_id:
          $ref: '#/components/schemas/AccountId'
        public_key:
          $ref: '#/components/schemas/PublicKey'
        stake:
          $ref: '#/components/schemas/NearToken'
      required:
      - account_id
      - public_key
      - stake
      type: object
    ValidatorStakeView:
      oneOf:
      - allOf:
        - $ref: '#/components/schemas/ValidatorStakeViewV1'
        properties:
          validator_stake_struct_version:
            enum:
            - V1
            type: string
        required:
        - validator_stake_struct_version
        type: object
    BlockHeaderInnerLiteView:
      description: A part of a state for the current head of a light client. More info [here](https://nomicon.io/ChainSpec/LightClient).
      properties:
        block_merkle_root:
          allOf:
          - $ref: '#/components/schemas/CryptoHash'
          description: The merkle root of all the block hashes
        epoch_id:
          allOf:
          - $ref: '#/components/schemas/CryptoHash'
          description: The epoch to which the block that is the current known head belongs
        height:
          format: uint64
          minimum: 0
          type: integer
        next_bp_hash:
          allOf:
          - $ref: '#/components/schemas/CryptoHash'
          description: The hash of the block producers set for the next epoch
        next_epoch_id:
          allOf:
          - $ref: '#/components/schemas/CryptoHash'
          description: The epoch that will follow the current epoch
        outcome_root:
          $ref: '#/components/schemas/CryptoHash'
        prev_state_root:
          $ref: '#/components/schemas/CryptoHash'
        timestamp:
          description: Legacy json number. Should not be used.
          format: uint64
          minimum: 0
          type: integer
        timestamp_nanosec:
          type: string
      required:
      - height
      - epoch_id
      - next_epoch_id
      - prev_state_root
      - outcome_root
      - timestamp
      - timestamp_nanosec
      - next_bp_hash
      - block_merkle_root
      type: object
    EpochId:
      allOf:
      - $ref: '#/components/schemas/CryptoHash'
      description: 'Epoch identifier -- wrapped hash, to make it easier to distinguish.

        EpochId of epoch T is the hash of last block in T-2

        EpochId of first two epochs is 0'
    InternalError:
      oneOf:
      - properties:
          info:
            properties:
              error_message:
                type: string
            required:
            - error_message
            type: object
          name:
            enum:
            - INTERNAL_ERROR
            type: string
        required:
        - name
        - info
        type: object
    RpcRequestValidationErrorKind:
      oneOf:
      - properties:
          info:
            properties:
              method_name:
                type: string
            required:
            - method_name
            type: object
          name:
            enum:
            - METHOD_NOT_FOUND
            type: string
        required:
        - name
        - info
        type: object
      - properties:
          info:
            properties:
              error_message:
                type: string
            required:
            - error_message
            type: object
          name:
            enum:
            - PARSE_ERROR
            type: string
        required:
        - name
        - info
        type: object
    AccountId:
      $schema: https://json-schema.org/draft/2020-12/schema
      description: 'NEAR Account Identifier.


        This is a unique, syntactically valid, human-readable account identifier on the NEAR network.


        [See the crate-level docs for information about validation.](index.html#account-id-rules)


        Also see [Error kind precedence](AccountId#error-kind-precedence).


        ## Examples


        ```

        use near_account_id::AccountId;


        let alice: AccountId = "alice.near".parse().unwrap();


        assert!("ƒelicia.near".parse::<AccountId>().is_err()); // (ƒ is not f)

        ```'
      title: AccountId
      type: string
    Signature:
      type: string
    RpcLightClientNextBlockError:
      oneOf:
      - properties:
          info:
            properties:
              error_message:
                type: string
            required:
            - error_message
            type: object
          name:
            enum:
            - INTERNAL_ERROR
            type: string
        required:
        - name
        - info
        type: object
      - properties:
          info:
            type: object
          name:
            enum:
            - UNKNOWN_BLOCK
            type: string
        required:
        - name
        - info
        type: object
      - properties:
          info:
            properties:
              epoch_id:
                $ref: '#/components/schemas/EpochId'
            required:
            - epoch_id
            type: object
          name:
            enum:
            - EPOCH_OUT_OF_BOUNDS
            type: string
        required:
        - name
        - info
        type: object
    PublicKey:
      type: string
    ErrorWrapper_for_RpcLightClientNextBlockError:
      oneOf:
      - properties:
          cause:
            $ref: '#/components/schemas/RpcRequestValidationErrorKind'
          name:
            enum:
            - REQUEST_VALIDATION_ERROR
            type: string
        required:
        - name
        - cause
        type: object
      - properties:
          cause:
            $ref: '#/components/schemas/RpcLightClientNextBlockError'
          name:
            enum:
            - HANDLER_ERROR
            type: string
        required:
        - name
        - cause
        type: object
      - properties:
          cause:
            $ref: '#/components/schemas/InternalError'
          name:
            enum:
            - INTERNAL_ERROR
            type: string
        required:
        - name
        - cause
        type: object
    RpcLightClientNextBlockResponse:
      description: A state for the current head of a light client. More info [here](https://nomicon.io/ChainSpec/LightClient).
      properties:
        approvals_after_next:
          items:
            anyOf:
            - $ref: '#/components/schemas/Signature'
            - enum:
              - null
              nullable: true
          type: array
        inner_lite:
          allOf:
          - $ref: '#/components/schemas/BlockHeaderInnerLiteView'
          description: "Inner part of the block header that gets hashed, split into two parts, one that is sent\n   to light clients, and the rest"
        inner_rest_hash:
          $ref: '#/components/schemas/CryptoHash'
        next_block_inner_hash:
          $ref: '#/components/schemas/CryptoHash'
        next_bps:
          items:
            $ref: '#/components/schemas/ValidatorStakeView'
          nullable: true
          type: array
        prev_block_hash:
          $ref: '#/components/schemas/CryptoHash'
      type: object