Notion API Client for Haskell

A type-safe Haskell client for the Notion API (version 2025-09-03).

Features

• Type-safe API bindings using Servant
• Comprehensive coverage of Notion API endpoints
• Support for all Notion object types: Pages, Databases, Data Sources, Blocks, Users, etc.
• Simple client interface with sensible defaults

Installation

Add to your package.yaml or .cabal file:

dependencies:
  - notion-client

Usage

Here's a simple example of retrieving a Notion page:

module Main where

import Notion.V1
import Notion.V1.Pages
import Data.Text qualified as Text
import System.Environment qualified as Environment

main :: IO ()
main = do
    token <- Environment.getEnv "NOTION_TOKEN"

    clientEnv <- getClientEnv "https://api.notion.com/v1"

    let Methods{ retrievePage } = makeMethods clientEnv (Text.pack token)

    page <- retrievePage "page-id-here"

    print page

Creating a page

import Notion.V1
import Notion.V1.Common (Parent(..))
import Notion.V1.Pages
import Data.Map qualified as Map
import Data.Aeson (toJSON)

createNewPage :: Methods -> IO PageObject
createNewPage Methods{createPage} = do
    let pageProperties = Map.fromList
            [ ("title", PropertyValue
                { type_ = Title
                , value = Just $ toJSON [-- rich text objects --]
                })
            ]

        newPage = mkCreatePage
            (DataSourceParent { dataSourceId = "data-source-id-here" })
            pageProperties

    createPage newPage

API Coverage

• Databases: Create, retrieve, and update databases
• Data Sources: Create, retrieve, update, and query data sources
• Pages: Create, retrieve, and update pages
• Blocks: Retrieve, update, append children, and delete blocks
• Users: List, retrieve users and bot users
• Search: Search for pages and data sources
• Comments: Create and list comments
• Webhooks: Event types and signature verification

Running the Example

The repository includes a comprehensive example in the notion-client-example directory that demonstrates how to use most API endpoints.

To run the example:

# Set required environment variables
export NOTION_TOKEN="your-integration-token"

# Optional: Set these if you want to test specific database/page endpoints
export NOTION_TEST_DATABASE_ID="your-database-id"
export NOTION_TEST_PAGE_ID="your-page-id"

# Run the example
cabal run notion-client-example

Obtaining API Credentials

1. Create a Notion integration at https://www.notion.so/my-integrations
2. Get your integration token from the integration settings
3. Share any Notion pages or databases you want to access with your integration
   • Open the page/database in Notion
   • Click "Share" in the top right
   • Enter your integration name and click "Invite"
4. Get the page/database IDs from their URLs:
   • Page URL: https://www.notion.so/Your-Page-Title-83715d7c1111424aaa11d7fc1111bd2a
   • Page ID: 83715d7c1111424aaa11d7fc1111bd2a (the last part of the URL)

License

BSD-3-Clause