Nylas Calendars API

openapi: 3.1.0
servers:
- url: https://api.us.nylas.com
  description: U.S.
- url: https://api.eu.nylas.com
  description: E.U.
info:
  title: Nylas Calendars API
  version: v3
  summary: The complete Nylas v3 API — Email, Calendar, Contacts, Notetaker, Scheduling, Administration, and Migration.
  description: "The Nylas API is designed using the [REST](https://en.wikipedia.org/wiki/Representational_State_Transfer) ideology to provide simple and predictable URIs to access and modify objects. Requests support [standard HTTP methods](https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html) like `GET`, `PUT`, `POST`, and `DELETE`, and [standard status codes](https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html). Response bodies are always UTF-8 encoded JSON objects, unless explicitly documented otherwise.\n\nYou can use the [Nylas Postman collection](https://www.postman.com/trynylas/workspace/nylas-api/overview) to quickly start using the Nylas APIs. For more information, check out the [Nylas Postman collection documentation](/docs/v3/api-references/postman/).\n\n[<img src=\"https://run.pstmn.io/button.svg\" alt=\"Run In Postman\" style=\"width: 128px; height: 32px;\">](https://god.gw.postman.com/run-collection/21157315-b864762a-ddbb-4e08-bcc5-e87bb51a825a?action=collection%2Ffork&source=rip_markdown&collection-url=entityId%3D21157315-b864762a-ddbb-4e08-bcc5-e87bb51a825a%26entityType%3Dcollection%26workspaceId%3De36cf1fc-a749-494d-9c8c-f3c28f18c342#?env%5Bv3%20Environment%5D=[{"key":"baseUrl","value":"https://api.us.nylas.com","type":"default","description":"Nylas API base URL. Use https://api.eu.nylas.com for the EU region.","enabled":true},{"key":"bearerToken","value":"","type":"secret","description":"Your Nylas API key from the Dashboard (https://dashboard-v3.nylas.com). Used for all authenticated requests.","enabled":true},{"key":"grant_id","value":"","type":"default","description":"The grant ID representing an end user's connected account. Required for ECC & Scheduler collections. Find this in the Dashboard under Grants.","enabled":true},{"key":"access_token","value":"","type":"secret","description":"A user-level access token returned from the OAuth flow. Alternative to using API key + grant_id for per-user auth.","enabled":true},{"key":"application_id","value":"","type":"default","description":"Your Nylas application ID. Auto-set by the 'Verify API key' request in the Admin collection.","enabled":true},{"key":"provider","value":"google","type":"default","description":"Auth provider for connector operations: google, microsoft, imap, or virtual-calendar.","enabled":true},{"key":"callback_id","value":"","type":"default","description":"Redirect URI ID. Set after creating a callback URI in the Admin collection.","enabled":true},{"key":"credential_id","value":"","type":"default","description":"Connector credential ID for service accounts or app passwords.","enabled":true},{"key":"webhook_id","value":"","type":"default","description":"Webhook destination ID. Set after creating a webhook.","enabled":true},{"key":"channel_id","value":"","type":"default","description":"Pub/Sub channel ID. Set after creating a channel.","enabled":true},{"key":"workspace_id","value":"","type":"default","description":"Workspace ID for grant grouping & organization.","enabled":true},{"key":"api_key_id","value":"","type":"default","description":"API key resource ID (not the key itself). Used for managing API keys via the Admin API.","enabled":true},{"key":"nylas_client_id","value":"","type":"default","description":"Your Nylas application's client ID. Used in hosted OAuth authorization URLs.","enabled":true},{"key":"nylas_client_secret","value":"","type":"secret","description":"Your Nylas application's client secret. Used in the OAuth token exchange step.","enabled":true},{"key":"redirect_uri","value":"","type":"default","description":"OAuth callback URL registered with your Nylas application.","enabled":true},{"key":"response_type","value":"code","type":"default","description":"OAuth response type. Use 'code' for server-side auth (recommended) or 'token' for client-side.","enabled":true},{"key":"code","value":"","type":"default","description":"Authorization code returned from hosted OAuth. Used to exchange for an access token.","enabled":true},{"key":"id_token","value":"","type":"default","description":"ID token for custom authentication flows.","enabled":true},{"key":"email","value":"","type":"default","description":"Email address used as login_hint in OAuth flows. Pre-fills the provider sign-in page.","enabled":true},{"key":"google_client_id","value":"","type":"default","description":"Your Google OAuth client ID. Used when creating a Google connector.","enabled":true},{"key":"google_client_secret","value":"","type":"secret","description":"Your Google OAuth client secret. Used when creating a Google connector.","enabled":true},{"key":"calendar_id","value":"","type":"default","description":"Calendar ID. Can be the grant's email address or 'primary' for the default calendar.","enabled":true},{"key":"event_id","value":"","type":"default","description":"Event ID. Auto-set by test scripts when creating or listing events.","enabled":true},{"key":"message_id","value":"","type":"default","description":"Message ID. Auto-set by test scripts when listing or sending messages.","enabled":true},{"key":"thread_id","value":"","type":"default","description":"Thread ID. Auto-set by test scripts when listing threads.","enabled":true},{"key":"draft_id","value":"","type":"default","description":"Draft ID. Auto-set by test scripts when creating drafts.","enabled":true},{"key":"folder_id","value":"","type":"default","description":"Folder or label ID. Auto-set by test scripts when listing folders.","enabled":true},{"key":"attachment_id","value":"","type":"default","description":"Attachment ID. Auto-set by test scripts when listing message attachments.","enabled":true},{"key":"contact_id","value":"","type":"default","description":"Contact ID. Auto-set by test scripts when listing or creating contacts.","enabled":true},{"key":"notetaker_id","value":"","type":"default","description":"Notetaker ID. Set after inviting a notetaker bot to a meeting.","enabled":true},{"key":"template_id","value":"","type":"default","description":"Message template ID. Auto-set by test scripts when creating templates.","enabled":true},{"key":"workflow_id","value":"","type":"default","description":"Workflow ID. Auto-set by test scripts when creating workflows.","enabled":true},{"key":"schedule_id","value":"","type":"default","description":"Schedule ID for ExtractAI operations.","enabled":true},{"key":"domain_name","value":"","type":"default","description":"Domain name for custom domain operations.","enabled":true},{"key":"configuration_id","value":"","type":"default","description":"Scheduler configuration ID. Auto-set by test scripts when creating a configuration.","enabled":true},{"key":"session_id","value":"","type":"default","description":"Scheduler session ID. Auto-set by test scripts when creating a session.","enabled":true},{"key":"booking_id","value":"","type":"default","description":"Booking ID. Auto-set by test scripts when creating a booking.","enabled":true},{"key":"group_event_id","value":"","type":"default","description":"Group event ID for collaborative scheduling with multiple participants.","enabled":true},{"key":"schedulerSessionToken","value":"","type":"secret","description":"Short-lived session token for public-facing Scheduler endpoints (Availability, Bookings). Created via the Sessions endpoint.","enabled":true},{"key":"v2_scheduler_slug","value":"","type":"default","description":"Slug from a v2 Scheduler page. Used for migrating v2 scheduling pages to v3 configurations.","enabled":true},{"key":"page_token","value":"","type":"default","description":"Pagination cursor. Pass the next_cursor value from a list response to get the next page of results.","enabled":true}])\n\n## Enable compression to optimize performance\n\nThe Email, Calendar, Contacts, and Scheduler APIs return gzip-compressed responses when your request includes the [`Accept-Encoding: gzip`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Encoding) header. Most HTTP libraries negotiate and decompress gzip responses automatically. With curl, use `--compressed`. Nylas skips compression for responses under about 200 bytes.\n\nCompression pairs well with [query parameters](#query-parameters) that limit the number of objects returned and [field selection](#reduce-response-size-with-field-selection) that limits which fields come back in each object. For the full walkthrough, including webhook, Pub/Sub, and SNS compression, see [Reducing payload size with compression](/docs/dev-guide/best-practices/compression/).\n\n## Query parameters\n\nNylas allows you to include query parameters in `GET` requests that return a list of results. Query parameters let you narrow the results Nylas returns, meaning fewer requests to the provider and less data for your application to sift through. For more information, see [Rate limits in Nylas](/docs/dev-guide/platform/rate-limits/).\n\nThe table below shows the query parameters you can use for the `GET` requests in the Email, Calendar, Contacts, and Notetaker APIs.\n\n| Endpoint                                                                                          | Query parameters                                                                                                                                                                                                                                                                               |\n| :------------------------------------------------------------------------------------------------ | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| [`GET /v3/grants/<NYLAS_GRANT_ID>/calendars`](/docs/reference/api/calendar/get-all-calendars/)    | `limit`, `page_token`, `metadata_pair`, `select`                                                                                                                                                                                                                                               |\n| [`GET /v3/grants/<NYLAS_GRANT_ID>/events`](/docs/reference/api/events/get-all-events/)            | `calendar_id` (required), `limit`, `page_token`, `show_cancelled`, `title`, `description`, `ical_uid`, `location`, `start`, `end`, `master_event_id`, `metadata_pair`, `busy`, `updated_before`, `updated_after`, `attendees`, `event_type`, `expand_recurring`, `tentative_as_busy`, `select` |\n| [`GET /v3/grants/<NYLAS_GRANT_ID>/drafts`](/docs/reference/api/drafts/get-drafts/)                | `limit`, `page_token`, `subject`, `any_email`, `to`, `cc`, `bcc`, `starred`, `thread_id`, `has_attachment`, `query_imap`, `select`                                                                                                                                                             |\n| [`GET /v3/grants/<NYLAS_GRANT_ID>/messages`](/docs/reference/api/messages/get-messages/)          | `limit`, `page_token`, `subject`, `any_email`, `to`, `from`, `cc`, `bcc`, `in`, `unread`, `starred`, `thread_id`, `received_before`, `received_after`, `has_attachment`, `fields`, `search_query_native`, `metadata_pair`, `query_imap`, `shared_from`, `select`                               |\n| [`GET /v3/grants/<NYLAS_GRANT_ID>/threads`](/docs/reference/api/threads/get-threads/)             | `limit`, `page_token`, `subject`, `any_email`, `to`, `from`, `cc`, `bcc`, `in`, `unread`, `starred`, `latest_message_before`, `latest_message_after`, `has_attachment`, `search_query_native`, `earliest_message_date`, `shared_folder_id`, `shared_from`, `select`                            |\n| [`GET /v3/grants/<NYLAS_GRANT_ID>/folders`](/docs/reference/api/folders/get-folder/)              | `limit`, `page_token`, `parent_id`, `include_hidden_folders`, `shared_from`, `single_level`, `select`                                                                                                                                                                                          |\n| [`GET /v3/grants/<NYLAS_GRANT_ID>/contacts`](/docs/reference/api/contacts/list-contact/)          | `limit`, `page_token`, `email`, `phone_number`, `source`, `group`, `recurse`, `select`                                                                                                                                                                                                         |\n| [`GET /v3/grants/<NYLAS_GRANT_ID>/notetakers`](/docs/reference/api/notetaker/get-all-notetakers/) | `limit`, `page_token`, `prev_page_token`, `join_time_start`, `join_time_end`, `state`, `order_by`, `order_direction`                                                                                                                                                                           |\n\nYou can use the `limit` parameter to set the maximum number of results Nylas returns for your request. Nylas recommends setting a lower `limit` if you encounter rate limits on the provider. For more information, see [Avoiding rate limits in Nylas](/docs/dev-guide/best-practices/rate-limits/).\n\nNylas supports case-insensitive partial matches for some query parameters:\n\n- `description`, `location`, and `title` in [Get all Events requests](/docs/reference/api/events/get-all-events/).\n- `subject` in [Get all Messages](/docs/reference/api/messages/get-messages/), [Get all Drafts](/docs/reference/api/drafts/get-drafts/), and [Get all Threads](/docs/reference/api/threads/get-threads/) requests.\n\nIf the specified field contains the query term, Nylas matches it regardless of the case. For example, if you set the `subject` query parameter to `march` in a Get all Messages request, Nylas might return the following messages:\n\n- \"Company **March** Meeting\"\n- \"Today in history: Mussolini's **march** on Rome\"\n- \"Your coupon code: **mARch**\"\n\nSince Nylas matches keywords, it won't return the following messages:\n\n- \"Confirmation code: abc**March**123\"\n- \"**M**cDonald's golden **arch**es\"\n\n## Pagination\n\nNylas might return multiple pages of data when you make a \"Get all\" request (for example, [Get all Events](/docs/reference/api/events/get-all-events/)). When this happens, Nylas includes the `next_cursor` field in its response. You can pass the value of `next_cursor` as the `page_token` query parameter in your next request to get the next page of results.\n\nYou can use the `limit` parameter to specify the maximum number of results you want in one page of data. If you see rate limits from the provider, try using a smaller `limit` value.\n\n| Query Parameter | Type    | Description                                                                                                                       |\n| :-------------- | :------ | :-------------------------------------------------------------------------------------------------------------------------------- |\n| `limit`         | integer | The number of objects to return, up to a maximum of `200` (defaults to `50`).                                                     |\n| `page_token`    | string  | An identifier that specifies which page of data to return. This value should be taken from the `next_cursor` response body field. |\n\n## Updating objects\n\n`PUT` and `PATCH` requests behave similarly in Nylas: when you make a request, Nylas replaces all data in the nested object with the information you define. Because of this, your request might fail if you don't include all mandatory fields.\n\nNylas doesn't erase the data from fields that you don't include in your request, so you can define only the mandatory fields and any that you want to update.\n\n## Grant ID patterns\n\nNylas supports multiple patterns for identifying grants in API calls. This flexibility allows you to reference grants using the identifier that's most convenient for your application, whether that's the Nylas grant ID, the user's email address, an external ID from your system, or a special shorthand syntax.\n\nAll endpoint paths that include `{grant_id}` support these patterns. For example, you can use any of these patterns with endpoints like `/v3/grants/{grant_id}/messages`, `/v3/grants/{grant_id}/events`, `/v3/grants/{grant_id}/contacts`, and others.\n\n| Pattern                  | Description                                                                                                                                                                                                             | Authorization           |\n| :----------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :---------------------- |\n| `<grant_id>`             | The Nylas grant ID (for example, `GET /v3/grants/e19f8e1a-eb1c-4673-b602-ba4a189b18bd/messages`). This is the standard format.                                                                                          | API key or access token |\n| `grant:<grant_id>`       | Explicitly prefixed Nylas grant ID (for example, `GET /v3/grants/grant:e19f8e1a-eb1c-4673-b602-ba4a189b18bd/messages`). This format is useful for clarity when working with multiple identifier types.                  | API key or access token |\n| `<email_address>`        | The email address associated with the grant (for example, `GET /v3/grants/user@example.com/messages`). Nylas looks up the grant associated with this email address.                                                     | API key or access token |\n| `email:<email_address>`  | Explicitly prefixed email address (for example, `GET /v3/grants/email:user@example.com/messages`). This format is useful for clarity when the email address might be ambiguous.                                         | API key or access token |\n| `external:<external_id>` | An external ID from your system (for example, `GET /v3/grants/external:user-12345/messages`). This allows you to reference grants using your own identifiers. For more information, see the External IDs documentation. | API key or access token |\n| `me`                     | A special shorthand syntax (for example, `GET /v3/grants/me/messages`). Nylas looks up the grant associated with the request's access token.                                                                            | Access token only       |\n\nThe `me` syntax is particularly useful for client-side applications where you authenticate end users with access tokens. You can't use this syntax with API key authorization, because there is no grant associated with an API key.\n\n## Metadata\n\nYou can use the `metadata` object to add a list of key-value pairs to Calendar, Event, Message, and Draft objects so you can store custom data with them. Both keys and values can be any string. If you want to filter on metadata, however, you must write values to one of the five [Nylas-specific keys](#metadata-keys-and-filtering).\n\nFor more information, see the [Metadata documentation](/docs/dev-guide/metadata/).\n\n### Metadata keys and filtering\n\nNylas reserves five metadata keys (`key1`, `key2`, `key3`, `key4`, `key5`) and indexes their contents. Nylas uses `key5` to identify events that count towards the `max-fairness` round-robin calculation for event availability. For more information, see [Group availability and booking best practices](/docs/v3/calendar/group-booking/#round-robin-max-fairness-groups).\n\nYou can add values to each of these reserved keys, and reference them in a query to filter the objects that Nylas returns. You can also add these filters as query parameters, as in the following examples:\n\n- `https://api.us.nylas.com/calendar?metadata_pair=key1:on-site`\n- `https://api.us.nylas.com/events?calendar_id=<CALENDAR_ID>&metadata_pair=key1:on-site`\n\nYou can't create a query that includes both a provider and metadata filter, other than `calendar_id`. For example, `https://api.us.nylas.com/calendar?metadata_pair=key1:plan-party&title=Birthday` returns an error.\n\n## Reduce response size with field selection\n\nField selection allows you to use the `select` query parameter to specify which fields you want Nylas to include in the response.\n\nYou can use field selection for all Nylas API endpoints, _except_ the following:\n\n- All `DELETE` endpoints.\n- All Attachments endpoints.\n- All Smart Compose endpoints.\n- The Send Message endpoint.\n- The Create a Draft endpoint.\n\nField selection helps to reduce the size of the response, improves latency, and helps you avoid rate limiting issues. You can also use it in cases where you want to avoid working with information from your users that you think might be sensitive.\n\nField selection can evaluate top-level object fields only. You cannot use it to return only nested fields.\n\n<div id=\"admonition-info\">\U0001F4DD <b>Note</b>: Nylas strongly suggests you always use field selection, so you only get the data that you need.</div>\n\nFor example, the following request specifies Nylas should return only the `id` and `name` fields of the Calendar object.\n\n```bash\ncurl --request GET \\\n  --url 'https://api.us.nylas.com/v3/grants/me/calendars?select=id,name'\n```\n\nThe response payload includes only the `id` and `name` fields in the `data` object, as in the example below.\n\n```json\n{\n  \"request_id\": \"5fa64c92-e840-4357-86b9-2aa364d35b88\",\n  \"data\": [\n    {\n      \"id\": \"5d3qmne77v32r8l4phyuksl2x\",\n      \"name\": \"My Calendar\"\n    },\n    {\n      \"id\": \"5d3qmne77v32r23aphyuksl2x\",\n      \"name\": \"My Calendar 2\"\n    }\n  ]\n}\n```\n\n## Nylas encoding\n\nResponse bodies are always UTF-8 encoded JSON objects, unless explicitly documented otherwise.\n"
  contact:
    url: https://www.nylas.com/
  x-provenance:
    method: harvested
    first_party: true
    publisher: Nylas
    source: https://developer.nylas.com/_spec-files/nylas-api.yaml
    harvested: '2026-08-21'
    sha256: 7ff001d571e163b1ffe22178741b59f813d8208ec878157a839a33dc2c13fd35
    bytes: 1666223
    note: 'Published by Nylas as the unified contract for the Nylas v3 API and stored verbatim; API Evangelist added only this provenance block. Submitted by the provider in api-evangelist/nylas#1 and verified against the live URL before harvest: OpenAPI 3.1.0, 118 paths, 208 operations, 174 component schemas, 100% of operations carrying summary, description, tag and a unique operationId, x-code-samples on 208 of 208. This document REPLACES a 22-operation scaffold API Evangelist derived from reading the documentation, now quarantined under openapi/_scaffold/.'
  x-evidence:
  - url: https://developer.nylas.com/_spec-files/nylas-api.yaml
    what: the published unified contract, harvested verbatim 2026-08-21 (200, text/yaml, 1,666,223 bytes)
  - url: https://developer.nylas.com/.well-known/api-catalog
    what: RFC 9727 linkset advertising that URL as service-desc for api.us.nylas.com and api.eu.nylas.com (200, application/linkset+json)
security:
- ACCESS_TOKEN: []
- NYLAS_API_KEY: []
tags:
- name: Calendars
paths:
  /v3/grants/{grant_id}/calendars:
    parameters:
    - $ref: '#/components/parameters/grant_id'
    get:
      summary: Return all calendars
      tags:
      - Calendars
      operationId: get-all-calendars
      description: (Not supported for IMAP) Returns all calendars.
      x-scopes:
        google:
          min: https://www.googleapis.com/auth/calendar.readonly
          others: https://www.googleapis.com/auth/calendar
        microsoft:
          min: https://graph.microsoft.com/Calendars.Read
          others: https://graph.microsoft.com/Calendars.ReadWrite
      security:
      - NYLAS_API_KEY: []
      - ACCESS_TOKEN: []
      parameters:
      - $ref: '#/components/parameters/field_selection'
      - $ref: '#/components/parameters/limit'
      - $ref: '#/components/parameters/metadata_pair'
      - $ref: '#/components/parameters/page_token'
      x-code-samples:
      - lang: bash
        label: cURL
        source: "curl --request GET \\\n  --url 'https://api.us.nylas.com/v3/grants/<NYLAS_GRANT_ID>/calendars' \\\n  --header 'Authorization: Bearer <NYLAS_API_KEY>' \\\n  --header 'Content-Type: application/json'"
      - lang: javascript
        label: Node.js SDK
        source: "import Nylas from \"nylas\";\n\nconst nylas = new Nylas({\n  apiKey: \"<NYLAS_API_KEY>\",\n  apiUri: \"<NYLAS_API_URI>\",\n});\n\nasync function fetchFiveAvailableCalendars() {\n  try {\n    const calendars = await nylas.calendars.list({\n      identifier: \"<NYLAS_GRANT_ID>\",\n      queryParams: {\n        limit: 5,\n      },\n    });\n\n    console.log(\"Available Calendars:\", calendars);\n  } catch (error) {\n    console.error(\"Error fetching calendars:\", error);\n  }\n}\n\nfetchFiveAvailableCalendars();\n"
      - lang: python
        label: Python SDK
        source: "from nylas import Client\n\nnylas = Client(\n    \"<NYLAS_API_KEY>\",\n    \"<NYLAS_API_URI>\"\n)\n\ngrant_id = \"<NYLAS_GRANT_ID>\"\ncalendars = nylas.calendars.list(grant_id)\n\nprint(calendars)"
      - lang: ruby
        label: Ruby SDK
        source: "# Load gems\nrequire 'nylas'\n\n# Initialize Nylas client\nnylas = Nylas::Client.new(\n\t\tapi_key: \"<NYLAS_API_KEY>\"\n)\n\n# Build the query without parameters\nlistCalendersQueryParams = {}\n\n# Build the query with parameters\nreturnFiveCalendars = {\n\tlimit: 5\n}\n\n# Get a list of calendars\ncalendars, _request_ids = nylas.calendars.list(identifier: \"<NYLAS_GRANT_ID>\", \n\t\tquery_params: listCalendersQueryParams)\n\n# Loop the calendars\ncalendars.each {|calendar|\n\tputs(\"Name: #{calendar[:name]} | \" \\\n\t\t\t\"Description: #{calendar[:description]} | \" \\\n\t\t\t\"Is Read Only?: #{calendar[:read_only]} | \" \\\n\t\t\t\"Metadata: #{calendar[:metadata]}\")\n}\n\n# Build the event parameters with metadata\nCalendarsMetadata = {\n\tmetadata_pair: {\"key1\":\"This is my metadata\"}\n}\n\n# Get a list of calendars\ncalendars, _request_ids = nylas.calendars.list(identifier: \"<NYLAS_GRANT_ID>\", \n\t\tquery_params: CalendarsMetadata)\n\nputs \"\"                          \ncalendars.each {|calendar|\n\tputs calendar\n}"
      - lang: kotlin
        label: Kotlin SDK
        source: "// Import Nylas packages\nimport com.nylas.NylasClient\nimport com.nylas.models.*\nimport com.nylas.resources.Calendars\n\nfun main(args: Array<String>) {\n\n    // Initialize Nylas client\n    val nylas: NylasClient = NylasClient(\n        apiKey = \"<NYLAS_API_KEY>\"\n    )\n\n    // Build the query without parameters\n    val calendarQueryParams: ListCalendersQueryParams = ListCalendersQueryParams()\n    // Build the query with parameters\n    val returnFiveCalendars: ListCalendersQueryParams = ListCalendersQueryParams(5)\n    // Get all calendars\n    val calendars: List<Calendar> = nylas.calendars().\n                                    list(\"<NYLAS_GRANT_ID>\",\n                                    calendarQueryParams).data\n                                    \n    for(calendar in calendars){\n        println(\"Id: \" + calendar.id +\n                \" | Name: \" + calendar.name +\n                \" | Description: \" + calendar.description +\n                \" | Is Read Only?: \" + calendar.readOnly +\n                \" | Metadata: \" + calendar.metadata)\n    }\n\n    // Build the event parameters with metadata\n    val calendarsMetadata: ListCalendersQueryParams = ListCalendersQueryParams(\n                           metadataPair = mapOf(\"key1\" to \"This is my metadata\"))\n    val calendarsMeta: List<Calendar> = nylas.calendars().\n    list(\"<NYLAS_GRANT_ID>\",\n        calendarsMetadata).data\n    println()\n    println(calendarsMeta)\n}\n"
      - lang: java
        label: Java SDK
        source: "// Import packages\nimport com.nylas.NylasClient;\nimport com.nylas.models.*;\nimport java.util.List;\nimport java.util.Map;\n\npublic class ReturnCalendars {\n    public static void main(String[] args) throws NylasSdkTimeoutError, NylasApiError {\n        // Initialize the Nylas client\n        NylasClient nylas = new NylasClient.Builder(\"<NYLAS_API_KEY>\").build();\n\n        // Build the query without parameters\n        ListCalendersQueryParams listCalendersQueryParams = \n                                 new ListCalendersQueryParams();\n        // Build the query with parameters\n        ListCalendersQueryParams returnFiveCalendars = new ListCalendersQueryParams.\n                                                      Builder().limit(5).build();\n\n        // Get all calendars\n        List<Calendar> calendars = nylas.calendars().\n                       list(\"<NYLAS_GRANT_ID>\", listCalendersQueryParams).getData();\n\n        // Loop the calendars\n        for (Calendar calendar : calendars){\n            // Print out the response\n            System.out.println(\"Id: \" + calendar.getId() +\n                               \" | Name: \" + calendar.getName() +\n                               \" | Description: \" + calendar.getDescription() +\n                               \" | Is Read Only?: \" + calendar.getReadOnly() +\n                               \" | Metadata: \" + calendar.getMetadata());\n        }\n\n        // Build the event parameters with metadata\n        ListCalendersQueryParams CalendarsMetadata = new ListCalendersQueryParams.\n                                                         Builder().\n                                                         metadataPair(\n                                                         Map.of(\"key1\", \n                                                                \"This is my metadata\")\n                                                         ).\n                                                         build();\n                                                         \n        // Get all calendars that correspond to the metadata\n        List<Calendar> metaCalendars = nylas.calendars().\n                                       list(\"<NYLAS_GRANT_ID>\", CalendarsMetadata).\n                                       getData();\n        // P

# --- truncated at 32 KB (121 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/nylas/refs/heads/main/openapi/nylas-calendars-api-openapi.yml