Tezos Constants API

openapi: 3.2.0
info:
  title: TzKT Accounts Constants API
  description: "# Introduction\n\nTzKT is the most widely used tool in Tezos that provides you with convenient and flexible access to the Tezos blockchain data, processed and indexed by its own indexer. \nYou can fetch all historical data via REST API, or subscribe for real-time data via WebSocket API. TzKT was built by the joint efforts of the entire Tezos community \nto help developers build more services and dapps on top of Tezos.\n\nTzKT Indexer and API are [open-source](https://github.com/baking-bad/tzkt), so don't be afraid to depend on the third-party service,\nbecause you can always clone, build and run it yourself to have full control over all the components.\n\nFeel free to contact us if you have any questions or feature requests.\nYour feedback is much appreciated!\n\n- Discord: https://discord.gg/aG8XKuwsQd\n- Telegram: https://t.me/baking_bad_chat\n- X: https://x.com/TezosBakingBad\n- Email: hello@bakingbad.dev\n\nAnd don't forget to star TzKT [on GitHub](https://github.com/baking-bad/tzkt) if you like it \U0001F60A\n\n# Get Started\n\nThere are two API services provided for public use:\n- **Free TzKT API** with free anonymous access;\n- **TzKT Pro** with paid subscriptions with increased rate limits, off-chain data, extended support and business-level SLA.\n\nYou can find more details about differences between available tiers [here](https://tzkt.io/api).\n\n## Free TzKT API\n\nFree-tier TzKT API is the best way to get started and explore available Tezos data and API functionality.\nIt doesn't require authorization and is free for everyone and for both commercial and non-commercial use.\n\n> #### Note: attribution required\nIf you use free-tier TzKT API, you **must** mention it on your website or application by placing the label\n\"Powered by TzKT API\", or \"Built with TzKT API\", or \"Data provided by TzKT API\" with a direct link to [tzkt.io](https://tzkt.io).\n\nIt's available for the following Tezos networks with the following base URLs:\n\n- Mainnet: `https://api.tzkt.io/` or `https://api.mainnet.tzkt.io/` ([view docs](https://api.tzkt.io))\n- Ghostnet: `https://api.ghostnet.tzkt.io/` ([view docs](https://api.ghostnet.tzkt.io))\n- Shadownet: `https://api.shadownet.tzkt.io/` ([view docs](https://api.shadownet.tzkt.io))\n- Seoulnet: `https://api.seoulnet.tzkt.io/` ([view docs](https://api.seoulnet.tzkt.io))\n- Tallinnnet: `https://api.tallinnnet.tzkt.io/` ([view docs](https://api.tallinnnet.tzkt.io))\n\n### Sending Requests\n\nTo send a request to Free TzKT API you need literally nothing. Just take the base URL of the particular network\n(for example, Tezos mainnet: `https://api.tzkt.io`) and append the path of the particular endpoint\n(for example, chain's head: `/v1/head`), that's pretty much it: \n\n```bash\ncurl https://api.tzkt.io/v1/head\n```\n\nRead through this documentation to explore available endpoints, query parameters\n(note, if you click on a query parameter, you will see available modes, such as `.eq`, `.in`, etc.)\nand response models. If you have any questions, do not hesitate to ask for support, Tezos community has always been very friendly! \U0001F609\n\n### Rate Limits\n\nPlease, refer to https://tzkt.io/api to check relevant rate limits.\n\nIf you exceed the limit, the API will respond with `HTTP 429` status code.\n\n## TzKT Pro\n\nTzKT Pro is intended for professional use, for those who seek for extended capabilities, performance, reliability and business-level SLA.\nTzKT Pro service is provided via paid subscriptions. Please, refer to [Pricing Plans](https://tzkt.io/api) to check available tiers.\n\nIt's available for the following Tezos networks with the following base URLs:\n\n- Mainnet: `https://pro.tzkt.io/` ([view docs](https://api.tzkt.io))\n- Testnets: *let us know if you need TzKT Pro for testnets*\n\n### Authorization\n\nTo access TzKT Pro you will need to authorize requests with your personal API key, that you will receive on your email after purchasing a subscription.\nThis can be done by adding the query string parameter `?apikey={your_key}` or by adding the HTTP header `apikey: {your_key}`.\n\nNote that you can have multiple API keys within a single subscription.\n\nKeep your API keys private, do not publish it anywhere and do not hardcode it, especially in public repositories.\nIf your key was compromised, just let us know and we will issue a new one.\n\nAlso note that passing the API key via HTTP headers is more secure, because in HTTPS headers are encrypted,\nbut query string is not, so the key can be unintentionally exposed to third parties.\n\n### Sending Requests\n\nSending a request with the API key passed as a query string parameter:\n\n```bash\ncurl https://pro.tzkt.io/v1/head?apikey={your_key}\n```\n\nSending a request with the API key passed via an HTTP header:\n\n```bash\ncurl https://pro.tzkt.io/v1/head \\\n    -H 'apikey: {your_key}'\n```\n\n### Rate Limits\n\nPlease, refer to https://tzkt.io/api to check relevant rate limits for different pricing plans.\n\nAlso, TzKT Pro provides you with the additional HTTP headers to show the allowed limits, number of available requests\nand the time remaining (in seconds) until the quota is reset. Here's an example:\n\n```\nRateLimit-Limit: 50\nRateLimit-Remaining: 49\nRateLimit-Reset: 1\n```\n\nIt also sends general information about your rate limits per second and per day:\n\n```\nX-RateLimit-Limit-Second: 50\nX-RateLimit-Remaining-Second: 49\nX-RateLimit-Limit-Day: 3000000\nX-RateLimit-Remaining-Day: 2994953\n```\n\nIf you exceed the limit, the API will respond with `HTTP 429` status code.\n"
  contact:
    name: Baking Bad Team
    url: https://bakingbad.dev
    email: hello@bakingbad.dev
  version: 1.17.1
  x-logo:
    url: https://tzkt.io/logo.png
    href: https://tzkt.io/
servers:
- url: https://api.tzkt.io
tags:
- name: Constants
paths:
  /v1/constants:
    get:
      tags:
      - Constants
      summary: Get global constants
      description: Returns a list of global constants.
      operationId: Constants_Get
      parameters:
      - name: address
        in: query
        description: Filters constants by global address (starts with `expr..`).
        schema:
          oneOf:
          - $ref: '#/components/schemas/ExpressionParameter'
        x-position: 1
        x-tzkt-extension: query-parameter
      - name: creationLevel
        in: query
        description: Filters constants by creation level.
        schema:
          oneOf:
          - $ref: '#/components/schemas/Int32Parameter'
        x-position: 2
        x-tzkt-extension: query-parameter
      - name: creationTime
        in: query
        description: Filters constants by creation time.
        schema:
          oneOf:
          - $ref: '#/components/schemas/TimestampParameter'
        x-position: 3
        x-tzkt-extension: query-parameter
      - name: creator
        in: query
        description: Filters constants by creator.
        schema:
          oneOf:
          - $ref: '#/components/schemas/AccountParameter'
        x-position: 4
        x-tzkt-extension: query-parameter
      - name: refs
        in: query
        description: Filters constants by number of refs.
        schema:
          oneOf:
          - $ref: '#/components/schemas/Int32Parameter'
        x-position: 5
        x-tzkt-extension: query-parameter
      - name: size
        in: query
        description: Filters constants by size in bytes.
        schema:
          oneOf:
          - $ref: '#/components/schemas/Int32Parameter'
        x-position: 6
        x-tzkt-extension: query-parameter
      - name: select
        in: query
        description: Specify comma-separated list of fields to include into response or leave it undefined to return full object. If you select single field, response will be an array of values in both `.fields` and `.values` modes.
        schema:
          oneOf:
          - $ref: '#/components/schemas/SelectParameter'
        x-position: 7
        x-tzkt-extension: query-parameter
      - name: sort
        in: query
        description: 'Sorts delegators by specified field. Supported fields: `id` (default), `creationLevel`, `size`, `refs`.'
        schema:
          oneOf:
          - $ref: '#/components/schemas/SortParameter'
        x-position: 8
        x-tzkt-extension: query-parameter
      - name: offset
        in: query
        description: Specifies which or how many items should be skipped
        schema:
          oneOf:
          - $ref: '#/components/schemas/OffsetParameter'
        x-position: 9
        x-tzkt-extension: query-parameter
      - name: limit
        in: query
        description: Maximum number of items to return
        schema:
          type: integer
          format: int32
          default: 100
          maximum: 10000.0
          minimum: 0.0
        x-position: 10
      - name: format
        in: query
        description: Constant value format (`0` - micheline, `1` - michelson, `2` - bytes (base64))
        schema:
          type: integer
          format: int32
          default: 0
          maximum: 2.0
          minimum: 0.0
        x-position: 11
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Constant'
  /v1/constants/{address}:
    get:
      tags:
      - Constants
      summary: Get global constant by address
      description: Returns global constant with specified address (expression hash).
      operationId: Constants_GetByAddress
      parameters:
      - name: address
        in: path
        required: true
        description: Global address (starts with `expr..`)
        schema:
          type: string
        x-position: 1
      - name: format
        in: query
        description: Constant value format (`0` - micheline, `1` - michelson, `2` - bytes (base64))
        schema:
          type: integer
          format: int32
          default: 0
          maximum: 2.0
          minimum: 0.0
        x-position: 2
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Constant'
  /v1/constants/count:
    get:
      tags:
      - Constants
      summary: Get global constants count
      description: Returns a number of global constants.
      operationId: Constants_GetCount
      parameters:
      - name: refs
        in: query
        description: Filters constants by number of refs.
        schema:
          oneOf:
          - $ref: '#/components/schemas/Int32Parameter'
        x-position: 1
        x-tzkt-extension: query-parameter
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                type: integer
                format: int32
components:
  schemas:
    OffsetParameter:
      type: object
      additionalProperties: false
      properties:
        el:
          type:
          - integer
          - 'null'
          description: '**Elements** offset mode (optional, i.e. `offset.el=123` is the same as `offset=123`). \

            Skips specified number of elements.


            Example: `?offset=100`.'
          format: int32
        pg:
          type:
          - integer
          - 'null'
          description: '**Page** offset mode. \

            Skips `page * limit` elements. This is a classic pagination.


            Example: `?offset.pg=1`.'
          format: int32
        cr:
          type:
          - integer
          - 'null'
          description: '**Cursor** offset mode. \

            Skips all elements with the `cursor` before (including) the specified value. Cursor is a field used for sorting, e.g. `id`.

            Avoid using this offset mode with non-unique or non-sequential cursors such as `amount`, `balance`, etc.


            Example: `?offset.cr=45837`.'
          format: int64
      x-tzkt-extension: query-parameter
    Constant:
      type: object
      additionalProperties: false
      properties:
        address:
          type: string
          description: Global address (expression hash)
        value:
          description: Constant value (either micheline, michelson or bytes, depending on the `format` parameter)
        size:
          type: integer
          description: Constant size in bytes
          format: int32
        refs:
          type: integer
          description: Number of contracts referencing this constant
          format: int32
        creator:
          description: Account registered this constant
          oneOf:
          - $ref: '#/components/schemas/Alias'
        creationLevel:
          type: integer
          description: Level of the first block baked with this software
          format: int32
        creationTime:
          type: string
          description: Datetime of the first block baked with this software
          format: date-time
        extras:
          description: Off-chain extras
    SortParameter:
      type: object
      additionalProperties: false
      properties:
        asc:
          type:
          - string
          - 'null'
          description: '**Ascending** sort mode (optional, i.e. `sort.asc=id` is the same as `sort=id`). \

            Specify a field name to sort by.


            Example: `?sort=balance`.'
        desc:
          type:
          - string
          - 'null'
          description: '**Descending** sort mode. \

            Specify a field name to sort by descending.


            Example: `?sort.desc=id`.'
      x-tzkt-extension: query-parameter
    SelectParameter:
      type: object
      additionalProperties: false
      properties:
        fields:
          type:
          - array
          - 'null'
          description: '**Fields** selection mode (optional, i.e. `select.fields=balance` is the same as `select=balance`). \

            Specify a comma-separated list of fields to include into response.


            Example: `?select=address,balance` => `[ { "address": "asd", "balance": 10 } ]`.'
          items:
            type: string
        values:
          type:
          - array
          - 'null'
          description: '**Values** selection mode. \

            Specify a comma-separated list of fields to include their values into response.


            Example: `?select.values=address,balance` => `[ [ "asd", 10 ] ]`.'
          items:
            type: string
      x-tzkt-extension: query-parameter
    ExpressionParameter:
      type: object
      additionalProperties: false
      properties:
        eq:
          type:
          - string
          - 'null'
          description: '**Equal** filter mode (optional, i.e. `param.eq=123` is the same as `param=123`). \

            Specify an expression hash to get items where the specified field is equal to the specified value.


            Example: `?address=expr...`.'
        ne:
          type:
          - string
          - 'null'
          description: '**Not equal** filter mode. \

            Specify an expression hash to get items where the specified field is not equal to the specified value.


            Example: `?address.ne=expr...`.'
        in:
          type:
          - array
          - 'null'
          description: '**In list** (any of) filter mode. \

            Specify a comma-separated list of expression hashes to get items where the specified field is equal to one of the specified values.


            Example: `?address.in=expr1,expr2`.'
          items:
            type: string
        ni:
          type:
          - array
          - 'null'
          description: '**Not in list** (none of) filter mode. \

            Specify a comma-separated list of expression hashes to get items where the specified field is not equal to all the specified values.


            Example: `?address.ni=expr1,expr2`.'
          items:
            type: string
      x-tzkt-extension: query-parameter
    Int32Parameter:
      type: object
      additionalProperties: false
      properties:
        eq:
          type:
          - integer
          - 'null'
          description: '**Equal** filter mode (optional, i.e. `param.eq=123` is the same as `param=123`). \

            Specify an integer number to get items where the specified field is equal to the specified value.


            Example: `?balance=1234`.'
          format: int32
        ne:
          type:
          - integer
          - 'null'
          description: '**Not equal** filter mode. \

            Specify an integer number to get items where the specified field is not equal to the specified value.


            Example: `?balance.ne=1234`.'
          format: int32
        gt:
          type:
          - integer
          - 'null'
          description: '**Greater than** filter mode. \

            Specify an integer number to get items where the specified field is greater than the specified value.


            Example: `?balance.gt=1234`.'
          format: int32
        ge:
          type:
          - integer
          - 'null'
          description: '**Greater or equal** filter mode. \

            Specify an integer number to get items where the specified field is greater than equal to the specified value.


            Example: `?balance.ge=1234`.'
          format: int32
        lt:
          type:
          - integer
          - 'null'
          description: '**Less than** filter mode. \

            Specify an integer number to get items where the specified field is less than the specified value.


            Example: `?balance.lt=1234`.'
          format: int32
        le:
          type:
          - integer
          - 'null'
          description: '**Less or equal** filter mode. \

            Specify an integer number to get items where the specified field is less than or equal to the specified value.


            Example: `?balance.le=1234`.'
          format: int32
        in:
          type:
          - array
          - 'null'
          description: '**In list** (any of) filter mode. \

            Specify a comma-separated list of integers to get items where the specified field is equal to one of the specified values.


            Example: `?level.in=12,14,52,69`.'
          items:
            type: integer
            format: int32
        ni:
          type:
          - array
          - 'null'
          description: '**Not in list** (none of) filter mode. \

            Specify a comma-separated list of integers to get items where the specified field is not equal to all the specified values.


            Example: `?level.ni=12,14,52,69`.'
          items:
            type: integer
            format: int32
      x-tzkt-extension: query-parameter
    TimestampParameter:
      type: object
      additionalProperties: false
      properties:
        eq:
          type:
          - string
          - 'null'
          description: '**Equal** filter mode (optional, i.e. `param.eq=123` is the same as `param=123`). \

            Specify a datetime value to get items where the specified field is equal to the specified value.


            Example: `?timestamp=2020-02-20T02:40:57Z`.'
          format: date-time
        ne:
          type:
          - string
          - 'null'
          description: '**Not equal** filter mode. \

            Specify a datetime value to get items where the specified field is not equal to the specified value.


            Example: `?timestamp.ne=2020-02-20T02:40:57Z`.'
          format: date-time
        gt:
          type:
          - string
          - 'null'
          description: '**Greater than** filter mode. \

            Specify a datetime value to get items where the specified field is greater than the specified value.


            Example: `?timestamp.gt=2020-02-20T02:40:57Z`.'
          format: date-time
        ge:
          type:
          - string
          - 'null'
          description: '**Greater or equal** filter mode. \

            Specify a datetime value to get items where the specified field is greater than equal to the specified value.


            Example: `?timestamp.ge=2020-02-20T02:40:57Z`.'
          format: date-time
        lt:
          type:
          - string
          - 'null'
          description: '**Less than** filter mode. \

            Specify a datetime value to get items where the specified field is less than the specified value.


            Example: `?timestamp.lt=2020-02-20T02:40:57Z`.'
          format: date-time
        le:
          type:
          - string
          - 'null'
          description: '**Less or equal** filter mode. \

            Specify a datetime value to get items where the specified field is less than or equal to the specified value.


            Example: `?timestamp.le=2020-02-20T02:40:57Z`.'
          format: date-time
        in:
          type:
          - array
          - 'null'
          description: '**In list** (any of) filter mode. \

            Specify a comma-separated list of datetimes to get items where the specified field is equal to one of the specified values.


            Example: `?timestamp.in=2020-02-20,2020-02-21`.'
          items:
            type: string
            format: date-time
        ni:
          type:
          - array
          - 'null'
          description: '**Not in list** (none of) filter mode. \

            Specify a comma-separated list of datetimes to get items where the specified field is not equal to all the specified values.


            Example: `?timestamp.ni=2020-02-20,2020-02-21`.'
          items:
            type: string
            format: date-time
      x-tzkt-extension: query-parameter
    Alias:
      type: object
      additionalProperties: false
      properties:
        alias:
          type:
          - string
          - 'null'
          description: Account alias name (off-chain data).
        address:
          type: string
          description: Account address (public key hash).
    AccountParameter:
      type: object
      additionalProperties: false
      properties:
        eq:
          type:
          - string
          - 'null'
          description: '**Equal** filter mode (optional, i.e. `param.eq=123` is the same as `param=123`). \

            Specify a `tz` or `KT` address to get items where the specified field is equal to the specified value.


            Example: `?sender=tz1WnfXMPaNTBmH7DBPwqCWs9cPDJdkGBTZ8`.'
        ne:
          type:
          - string
          - 'null'
          description: '**Not equal** filter mode. \

            Specify a `tz` or `KT` address to get items where the specified field is not equal to the specified value.


            Example: `?sender.ne=tz1WnfXMPaNTBmH7DBPwqCWs9cPDJdkGBTZ8`.'
        in:
          type:
          - array
          - 'null'
          description: '**In list** (any of) filter mode. \

            Specify a comma-separated list of addresses to get items where the specified field is equal to one of the specified values.


            Example: `?sender.in=tz1WnfXMPaNTBWnfXMPaNTBWnfXMPaNTBNTB,tz1SiPXX4MYGNJNDSiPXX4MYGNJNDSiPXX4M`.'
          items:
            type: string
        ni:
          type:
          - array
          - 'null'
          description: '**Not in list** (none of) filter mode. \

            Specify a comma-separated list of addresses to get items where the specified field is not equal to all the specified values.


            Example: `?sender.ni=tz1WnfXMPaNTBWnfXMPaNTBWnfXMPaNTBNTB,tz1SiPXX4MYGNJNDSiPXX4MYGNJNDSiPXX4M`.'
          items:
            type: string
        eqx:
          type:
          - string
          - 'null'
          description: '**Equal to another field** filter mode. \

            Specify a field name to get items where the specified fields are equal.


            Example: `?sender.eqx=target`.'
        nex:
          type:
          - string
          - 'null'
          description: '**Not equal to another field** filter mode. \

            Specify a field name to get items where the specified fields are not equal.


            Example: `?sender.nex=initiator`.'
        'null':
          type:
          - boolean
          - 'null'
          description: '**Is null** filter mode. \

            Use this mode to get items where the specified field is null or not.


            Example: `?initiator.null` or `?initiator.null=false`.'
        inHasNull:
          type: boolean
        niHasNull:
          type: boolean
      x-tzkt-extension: query-parameter
x-generator: NSwag v14.2.0.0 (NJsonSchema v11.1.0.0 (Newtonsoft.Json v13.0.0.0))
x-tagGroups:
- name: REST API
  tags:
  - Accounts
  - BigMaps
  - Blocks
  - Commitments
  - Constants
  - Contracts
  - Cycles
  - Delegates
  - Domains
  - Events
  - Head
  - Helpers
  - Operations
  - Protocols
  - Quotes
  - Rewards
  - Rights
  - SmartRollups
  - Software
  - Staking
  - Statistics
  - Tickets
  - Tokens
  - Voting
- name: WebSocket API
  tags:
  - Get Started
  - Subscriptions
  - Examples
- name: Libraries
  tags:
  - Typescript SDK
  - Taquito extension