Aeternity

Aeternity Oracles API

The Oracles API from Aeternity — 5 operation(s) for oracles.

GitHub OpenAPI

Operations 5

GET /oracles Get oracles #
GET /oracles/{id} Get oracle #
GET /oracles/{id}/extends Get oracle extends #
GET /oracles/{id}/queries Get oracle queries #
GET /oracles/{id}/responses Get oracle responses #

Documentation

📖
Documentation
https://docs.aeternity.com/aeternity-developer-tools/development-infrastructure/sdks-and-apis/node-api-reference
📖
APIReference
https://api-docs.aeternity.io/
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/aeternity/refs/heads/main/authentication/aeternity-authentication.yml
📖
Documentation
https://docs.aeternity.com/aeternity-developer-tools/development-infrastructure/middleware
📖
APIReference
https://mainnet.aeternity.io/mdw/swagger

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/aeternity/refs/heads/main/openapi/aeternity-oracles-api-openapi.yml
⚙
AsyncAPI
https://raw.githubusercontent.com/api-evangelist/aeternity/refs/heads/main/asyncapi/aeternity-middleware-websocket-asyncapi.yml

Other Resources

🔗
Conventions
https://raw.githubusercontent.com/api-evangelist/aeternity/refs/heads/main/conventions/aeternity-conventions.yml
🔗
Idempotency
https://raw.githubusercontent.com/api-evangelist/aeternity/refs/heads/main/conventions/aeternity-conventions.yml
🔗
ErrorCatalog
https://raw.githubusercontent.com/api-evangelist/aeternity/refs/heads/main/errors/aeternity-problem-types.yml
🔗
DataModel
https://raw.githubusercontent.com/api-evangelist/aeternity/refs/heads/main/data-model/aeternity-data-model.yml
🔗
GraphQL
https://raw.githubusercontent.com/api-evangelist/aeternity/refs/heads/main/graphql/aeternity-middleware.graphql
🔗
ChangeLog
https://github.com/aeternity/ae_mdw/blob/master/CHANGELOG.md

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OpenAPI Specification

aeternity-oracles-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  description: API for Aeternity Middleware
  title: Aeternity Middleware Oracles API
  version: 1.108.2
servers:
- url: https://mainnet.aeternity.io/mdw/v3
  description: Mainnet middleware
- url: https://testnet.aeternity.io/mdw/v3
  description: Testnet middleware
tags:
- name: Oracles
paths:
  /oracles:
    get:
      deprecated: false
      description: Get multiple oracles.
      operationId: GetOracles
      parameters:
      - name: state
        in: query
        description: oracle state (active or inactive)
        required: false
        schema:
          type: string
          example: active
      - $ref: '#/components/parameters/LimitParam'
      - $ref: '#/components/parameters/ScopeParam'
      - $ref: '#/components/parameters/DirectionParam'
      responses:
        '200':
          description: Returns paginated oracles
          content:
            application/json:
              schema:
                allOf:
                - type: object
                  required:
                  - data
                  properties:
                    data:
                      type: array
                      items:
                        $ref: '#/components/schemas/Oracle'
                - $ref: '#/components/schemas/PaginatedResponse'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
      tags:
      - Oracles
      summary: Get oracles
      x-summary-source: derived
  /oracles/{id}:
    get:
      deprecated: false
      description: Get a single oracle.
      operationId: GetOracle
      parameters:
      - name: id
        in: path
        description: The oracle
        required: true
        schema:
          $ref: '#/components/schemas/OracleAddress'
      responses:
        '200':
          description: Returns single oracle
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Oracle'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NotFoundResponse'
      tags:
      - Oracles
      summary: Get oracle
      x-summary-source: derived
  /oracles/{id}/extends:
    get:
      deprecated: false
      description: Get an oracle's extensions.
      operationId: GetOracleExtends
      parameters:
      - name: id
        in: path
        description: The oracle
        required: true
        schema:
          $ref: '#/components/schemas/OracleAddress'
      responses:
        '200':
          description: Returns paginated oracle extensions
          content:
            application/json:
              schema:
                allOf:
                - type: object
                  required:
                  - data
                  properties:
                    data:
                      type: array
                      items:
                        $ref: '#/components/schemas/OracleExtend'
                - $ref: '#/components/schemas/PaginatedResponse'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NotFoundResponse'
      tags:
      - Oracles
      summary: Get oracle extends
      x-summary-source: derived
  /oracles/{id}/queries:
    get:
      deprecated: false
      description: Get an oracle's queries.
      operationId: GetOracleQueries
      parameters:
      - name: id
        in: path
        description: The oracle
        required: true
        schema:
          $ref: '#/components/schemas/OracleAddress'
      responses:
        '200':
          description: Returns paginated oracle queries
          content:
            application/json:
              schema:
                allOf:
                - type: object
                  required:
                  - data
                  properties:
                    data:
                      type: array
                      items:
                        allOf:
                        - $ref: '#/components/schemas/OracleQuery'
                        - type: object
                          properties:
                            response:
                              $ref: '#/components/schemas/OracleResponse'
                - $ref: '#/components/schemas/PaginatedResponse'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NotFoundResponse'
      tags:
      - Oracles
      summary: Get oracle queries
      x-summary-source: derived
  /oracles/{id}/responses:
    get:
      deprecated: false
      description: Get an oracle's responses.
      operationId: GetOracleResponses
      parameters:
      - name: id
        in: path
        description: The oracle
        required: true
        schema:
          $ref: '#/components/schemas/OracleAddress'
      responses:
        '200':
          description: Returns paginated oracle responses
          content:
            application/json:
              schema:
                allOf:
                - type: object
                  required:
                  - data
                  properties:
                    data:
                      type: array
                      items:
                        allOf:
                        - $ref: '#/components/schemas/OracleResponse'
                        - type: object
                          properties:
                            query:
                              $ref: '#/components/schemas/OracleQuery'
                          required:
                          - query
                - $ref: '#/components/schemas/PaginatedResponse'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NotFoundResponse'
      tags:
      - Oracles
      summary: Get oracle responses
      x-summary-source: derived
components:
  schemas:
    OracleExtend:
      example:
        height: 961963
        block_hash: mh_j3kociQVYDLkCsxdPVU8J9qPFLxUzrMnoSMuLp38yubDpuTyR
        tx:
          fee: 16132000000000
          nonce: 4357
          oracle_id: ok_Gb6cD91w29v8csjAxyyBmfAQmdNo1aUedWkhn9HxqiXeVuGcj
          oracle_ttl:
            type: delta
            value: 500
          ttl: 0
        source_tx_hash: th_NgGUA81Cy2VkwStujdyKQxBW9DTnEVJo3eHh7do3oAn4Zymmu
        source_tx_type: OracleExtendTx
      properties:
        block_hash:
          description: The hash of the block in which it occurred
          $ref: '#/components/schemas/MicroBlockHash'
        height:
          description: The block height
          type: integer
        source_tx_hash:
          description: The hash of the transaction in which the extend was done
          $ref: '#/components/schemas/TransactionHash'
        source_tx_type:
          description: The type of the transaction in which the extend was done, it can be either via a contract call or an extend transaction
          type: string
          enum:
          - ContractCallTx
          - OracleExtendTx
        tx:
          oneOf:
          - $ref: '#/components/schemas/OracleExtendTx'
          - $ref: '#/components/schemas/ContractCallTx'
      required:
      - block_hash
      - height
      - source_tx_hash
      - source_tx_type
      - tx
      type: object
    ContractCallTx:
      type: object
      properties:
        caller_id:
          $ref: '#/components/schemas/EncodedPubkey'
        nonce:
          $ref: '#/components/schemas/UInt64'
        contract_id:
          $ref: '#/components/schemas/EncodedPubkey'
        abi_version:
          $ref: '#/components/schemas/UInt16'
        fee:
          $ref: '#/components/schemas/UInt'
        ttl:
          $ref: '#/components/schemas/UInt64'
        amount:
          $ref: '#/components/schemas/UInt'
        gas:
          $ref: '#/components/schemas/UInt64'
        gas_price:
          $ref: '#/components/schemas/UInt'
        call_data:
          $ref: '#/components/schemas/EncodedContractByteArray'
      required:
      - caller_id
      - contract_id
      - abi_version
      - fee
      - amount
      - gas
      - gas_price
      - call_data
    OracleQuery:
      example:
        block_hash: mh_211yFeU3yxKgqXAaRyyxrALMDPxxTyYkrs6TwN9hWnxMHQk8Nc
        block_time: 1595571314482
        height: 289005
        query_id": oq_su6wv4MZsnJfopjAhd1Sx7HuBBtqhdHhahkoTPWk7bg24UWNR
        source_tx_hash: th_gsaRRLnysE4pFH1DqY731F6LBEjhdDwnzoDyBnZjBUygoSvpJ
        source_tx_type: OracleQueryTx
        fee: 17199000000000
        nonce: 57
        oracle_id: ok_qJZPXvWPC7G9kFVEqNjj9NAmwMsQcpRu6E3SSCvCQuwfqpMtN
        query: YmFpeGluIHF1ZXJ5
        query_fee: 2000000000000000
        query_ttl:
          type: delta
          value: 100
        response_ttl:
          type: delta
          value: 100
        sender_id: ak_CNcf2oywqbgmVg3FfKdbHQJfB959wrVwqfzSpdWVKZnep7nj4
        ttl: 289505
      properties:
        block_hash:
          description: The hash of the block in which it occurred
          $ref: '#/components/schemas/MicroBlockHash'
        block_time:
          description: The time of the block
          type: integer
        height:
          description: The block height
          type: integer
        query_id:
          $ref: '#/components/schemas/OracleQueryId'
        source_tx_hash:
          description: The hash of the transaction in which the query was created
          $ref: '#/components/schemas/TransactionHash'
        source_tx_type:
          type: string
          description: The type of the transaction in which the query was created, it can be either via a contract call or a query transaction
          enum:
          - ContractCallTx
          - OracleQueryTx
        fee:
          description: The transaction fee
          type: integer
        nonce:
          description: The nonce
          type: integer
        oracle_id:
          description: The oracle ID of this query
          $ref: '#/components/schemas/OracleAddress'
        query:
          description: Base64 encoding of the query
          type: string
        query_fee:
          description: The query fee
          type: integer
        query_ttl:
          description: Expiration of the query
          type: object
        response_ttl:
          description: Expiration of the response
          type: object
        sender_id:
          description: The creator of the query
          $ref: '#/components/schemas/AccountAddress'
        ttl:
          description: Transaction TTL
          type: integer
      required:
      - block_hash
      - block_time
      - height
      - query_id
      - source_tx_hash
      - source_tx_type
      - fee
      - nonce
      - oracle_id
      - query
      - query_fee
      - query_ttl
      - response_ttl
      - sender_id
      - ttl
      type: object
    ErrorResponse:
      description: Error response from the API
      type: object
      example:
        error: 'invalid id: th_2Twp3pJeVuwQ7cMSdPQRfpAUWwdMiwx6coVMpRaNSuzFRnDZF'
      properties:
        error:
          description: The message of the error raised
          type: string
      required:
      - error
      title: Error response
    OracleExtendTx:
      type: object
      properties:
        fee:
          $ref: '#/components/schemas/UInt'
        oracle_ttl:
          $ref: '#/components/schemas/RelativeTTL'
        oracle_id:
          $ref: '#/components/schemas/EncodedPubkey'
        nonce:
          $ref: '#/components/schemas/UInt64'
        ttl:
          $ref: '#/components/schemas/UInt64'
      required:
      - fee
      - oracle_ttl
      - oracle_id
    TransactionHash:
      description: Transaction hash
      type: string
      example: th_2Zfo2ALfRkKQxEaUj3HhcUGyMrTqYpDMgr2u15fPanYD1d55kz
      pattern: ^th_\w{38,50}$
    MicroBlockHash:
      description: Micro block hash
      type: string
      example: mh_2Zfo2ALfRkKQxEaUj3HhcUGyMrTqYpDMgr2u15fPanYD1d55kz
      pattern: ^mh_\w{38,50}$
    AccountAddress:
      description: Account address
      type: string
      example: ak_psy8tRXPzGxh6975H7K6XQcMFVsdrxJMt7YkzMY8oUTevutzw
      pattern: ^ak_\w{38,50}$
    TransactionEncoded:
      description: Encoded transaction
      type: string
      example: tx_+E8hAaEB4TK48d23oE5jt/qWR5pUu8UlpTGn8bwM5JISGQMGf7ABoQOvDVCf43V7alNbsUvTarXaCf7rjtWX36YLS4+JTa4jn4YPHaUyOAAAxRZ6Sg==
      pattern: ^tx_\w+$
    NotFoundResponse:
      description: Resource not found on the API
      type: object
      example:
        error: 'not found: th_2Twp3pJeVuwQ7cMSdPQRfpAUWwdMiwx6coVMpRaNSuzFRnDZF'
      properties:
        error:
          description: The message of the error raised
          type: string
      required:
      - error
      title: Not found response
    OracleQueryId:
      description: Oracle query ID
      type: string
      example: oq_2t7TnocFw7oCYSS7g2yGutZMpGEJta6dq2DTX38SmuqmwtN6Ch
      pattern: ^oq_\w{38,50}$
    OracleAddress:
      description: Oracle address
      type: string
      example: ok_2t7TnocFw7oCYSS7g2yGutZMpGEJta6dq2DTX38SmuqmwtN6Ch
      pattern: ^ok_\w{38,50}$
    TTL:
      type: object
      properties:
        type:
          type: string
          enum:
          - delta
          - block
        value:
          $ref: '#/components/schemas/UInt64'
      required:
      - type
      - value
    ContractCreateTx:
      type: object
      properties:
        owner_id:
          $ref: '#/components/schemas/EncodedPubkey'
        nonce:
          $ref: '#/components/schemas/UInt64'
        code:
          $ref: '#/components/schemas/EncodedContractByteArray'
        vm_version:
          $ref: '#/components/schemas/UInt16'
        abi_version:
          $ref: '#/components/schemas/UInt16'
        deposit:
          $ref: '#/components/schemas/UInt'
        amount:
          $ref: '#/components/schemas/UInt'
        gas:
          $ref: '#/components/schemas/UInt64'
        gas_price:
          $ref: '#/components/schemas/UInt'
        fee:
          $ref: '#/components/schemas/UInt'
        ttl:
          $ref: '#/components/schemas/UInt64'
        call_data:
          $ref: '#/components/schemas/EncodedContractByteArray'
      required:
      - owner_id
      - code
      - vm_version
      - abi_version
      - deposit
      - amount
      - gas
      - gas_price
      - fee
      - call_data
    Signature:
      description: Signature
      type: string
      example: sg_8hhU15cVMbukFj4FbdrFwwYnbzXYPnstu9PDnWZGbfQNpeHcB6tK1F3wvG1MPYySARgDRJYUh3YPJD3HctFwg6Y4rUGSR
      pattern: ^sg_\w+$
    EncodedPubkey:
      description: Base58Check encoded tagged pubkey
      type: string
    OracleResponse:
      example:
        block_hash: mh_211yFeU3yxKgqXAaRyyxrALMDPxxTyYkrs6TwN9hWnxMHQk8Nc
        block_time: 1595571314482
        height: 289005
        query_id: oq_su6wv4MZsnJfopjAhd1Sx7HuBBtqhdHhahkoTPWk7bg24UWNR
        source_tx_hash: th_gsaRRLnysE4pFH1DqY731F6LBEjhdDwnzoDyBnZjBUygoSvpJ
        source_tx_type: OracleRespondTx
        fee: 17199000000000
        nonce: 57
        oracle_id: ok_qJZPXvWPC7G9kFVEqNjj9NAmwMsQcpRu6E3SSCvCQuwfqpMtN
        query_fee: 2000000000000000
        response_ttl:
          type: delta
          value: 100
        ttl: 289505
      properties:
        block_hash:
          description: The hash of the block in which it occurred
          $ref: '#/components/schemas/MicroBlockHash'
        block_time:
          description: The time of the block
          type: integer
        height:
          description: The block height
          type: integer
        query_id:
          $ref: '#/components/schemas/OracleQueryId'
        source_tx_hash:
          description: The hash of the transaction in which the response was created
          $ref: '#/components/schemas/TransactionHash'
        source_tx_type:
          type: string
          description: The type of the transaction in which the response was created, it can be either via a contract call or a respond transaction
          enum:
          - ContractCallTx
          - OracleRespondTx
        fee:
          description: The transaction fee
          type: integer
        nonce:
          description: The nonce
          type: integer
        oracle_id:
          description: The oracle ID of this response
          $ref: '#/components/schemas/OracleAddress'
        response:
          description: Base64 encoding of the response
          type: string
        response_ttl:
          description: Expiration of the response
          type: object
        ttl:
          description: Transaction TTL
          type: integer
      required:
      - block_hash
      - block_time
      - height
      - query_id
      - source_tx_hash
      - source_tx_type
      - fee
      - nonce
      - oracle_id
      - response
      - response_ttl
      - ttl
      type: object
    UInt:
      oneOf:
      - type: integer
        minimum: 0
      - type: string
    EncodedContractByteArray:
      description: Base64Check encoded contract byte array
      type: string
      example: cb_AAAAAfy4hFE=
      pattern: ^cb_[0-9A-Za-z+/=]+$
    UInt16:
      oneOf:
      - type: integer
        minimum: 0
        maximum: 65535
      - type: string
    RelativeTTL:
      type: object
      properties:
        type:
          type: string
          enum:
          - delta
        value:
          $ref: '#/components/schemas/UInt64'
      required:
      - type
      - value
    OracleTx:
      type: object
      required:
      - block_hash
      - block_height
      - hash
      - tx_hash
      - micro_index
      - micro_time
      - signatures
      - encoded_tx
      - tx
      properties:
        block_hash:
          $ref: '#/components/schemas/MicroBlockHash'
        block_height:
          type: integer
        hash:
          $ref: '#/components/schemas/TransactionHash'
        micro_index:
          type: integer
        micro_time:
          type: integer
        signatures:
          type: array
          items:
            $ref: '#/components/schemas/Signature'
        encoded_tx:
          $ref: '#/components/schemas/TransactionEncoded'
        tx:
          allOf:
          - type: object
            required:
            - version
            - type
            properties:
              version:
                type: integer
              type:
                type: string
          - oneOf:
            - title: OracleRegisterTx
              allOf:
              - $ref: '#/components/schemas/OracleRegisterTx'
              - type: object
                required:
                - oracle_id
                properties:
                  oracle_id:
                    deprecated: true
                    description: use `account_id` instead (the same value with a different prefix)
                    $ref: '#/components/schemas/OracleAddress'
            - $ref: '#/components/schemas/ContractCallTx'
            - $ref: '#/components/schemas/ContractCreateTx'
            discriminator:
              propertyName: type
              mapping:
                OracleRegisterTx: '#/components/schemas/OracleRegisterTx'
                ContractCallTx: '#/components/schemas/ContractCallTx'
                ContractCreateTx: '#/components/schemas/ContractCreateTx'
    OracleRegisterTx:
      type: object
      properties:
        query_format:
          type: string
        response_format:
          type: string
        query_fee:
          $ref: '#/components/schemas/UInt'
        oracle_ttl:
          $ref: '#/components/schemas/TTL'
        account_id:
          $ref: '#/components/schemas/EncodedPubkey'
        nonce:
          $ref: '#/components/schemas/UInt64'
        fee:
          $ref: '#/components/schemas/UInt'
        ttl:
          $ref: '#/components/schemas/UInt64'
        abi_version:
          $ref: '#/components/schemas/UInt16'
      required:
      - query_format
      - response_format
      - query_fee
      - fee
      - oracle_ttl
      - account_id
    Oracle:
      example:
        active: false
        active_from: 4660
        approximate_expire_time: 1587577871376
        expire_height: 6894
        format:
          query: string
          response: string
        oracle: ok_R7cQfVN15F5ek1wBSYaMRjW2XbMRKx7VDQQmbtwxspjZQvmPM
        query_fee: 20000
        register:
          block_hash: mh_2JZPXvWPC7G9kFVEqNjj9NAmwMsQcpRu6E3SSCvCQuwfqpMtN
          block_height: 4660
          encoded_tx: tx_+JELAfhCuEBX6CvfGClpszz2kg4qjUL8BtvNE0JpCtuwBHbZwGfTd6O6cQ9fr723QhuML50EIzZlFafB6UUi1y5S6RpZH2wJuEn4RxYBoQFtrWD1RJ5rxuHksnEXADAPHPT2jRT6uqVIr8X45BNYqgGFcXVlcnmIcmVzcG9uc2UAAIOYloCHBowmEhDKAIMEauEAmOjXSw==
          hash: th_2JZPXvWPC7G9kFVEqNjj9NAmwMsQcpRu6E3SSCvCQuwfqpMtN
          micro_index: 0
          micro_time: 1587577771376
          signatures:
          - sg_2JZPXvWPC7G9kFVEqNjj9NAmwMsQcpRu6E3SSCvCQuwfqpMtN
          tx:
            abi_version: 0
            account_id: ak_R7cQfVN15F5ek1wBSYaMRjW2XbMRKx7VDQQmbtwxspjZQvmPM
            fee: 20000
            nonce: 1
            oracle_id: ok_R7cQfVN15F5ek1wBSYaMRjW2XbMRKx7VDQQmbtwxspjZQvmPM
            oracle_ttl:
              type: delta
              value: 100
            query_fee: 20000
            query_format: query
            response_format: response
            ttl: 1587577871376
            type: OracleRegisterTx
            version: 1
          tx_hash: th_2JZPXvWPC7G9kFVEqNjj9NAmwMsQcpRu6E3SSCvCQuwfqpMtN
        register_time: 1587577771376
        register_tx_hash: th_2JZPXvWPC7G9kFVEqNjj9NAmwMsQcpRu6E3SSCvCQuwfqpMtN
      properties:
        active:
          description: The oracle active status
          type: boolean
        active_from:
          description: The block height when the oracle became active
          type: integer
        approximate_expire_time:
          description: The approximate time when the oracle expires
          type: integer
        expire_height:
          description: The block height when the oracle expires
          type: integer
        register_time:
          deprecated: true
          description: The block time in which the oracle was registered, use `register.micro_time` instead
          type: integer
        register_tx_hash:
          deprecated: true
          description: The transaction hash in which the oracle was registered, use `register.hash` instead
          $ref: '#/components/schemas/TransactionHash'
        format:
          type: object
          description: The oracle's query and response formats
          example:
            query: string
            response: string
          properties:
            query:
              description: The query format
              type: string
            response:
              description: The response format
              type: string
          required:
          - response
          - query
        oracle:
          $ref: '#/components/schemas/OracleAddress'
        query_fee:
          description: The query fee
          type: integer
        register:
          $ref: '#/components/schemas/OracleTx'
      required:
      - register
      - register_time
      - register_tx_hash
      - query_fee
      - oracle
      - format
      - extends
      - expire_height
      - approximate_expire_time
      - active_from
      - active
      type: object
    PaginatedResponse:
      type: object
      properties:
        next:
          type:
          - string
          - 'null'
          example: /blocks?cursor=123
        prev:
          type:
          - string
          - 'null'
          example: /blocks?cursor=234
      required:
      - next
      - prev
    UInt64:
      oneOf:
      - type: integer
        minimum: 0
        maximum: 18446744073709552000
      - type: string
  parameters:
    ScopeParam:
      in: query
      name: scope
      description: Scopes results in a generation range
      schema:
        type: string
        pattern: (gen):\d+(-\d+)?
    DirectionParam:
      in: query
      name: direction
      description: Sorts results in forwards or backwards direction
      schema:
        type: string
        enum:
        - forward
        - backward
    LimitParam:
      in: query
      name: limit
      description: Limit paginated resources (max 100)
      schema:
        type: integer
        minimum: 1
        maximum: 100
        default: 10