Now liveThe Skillselion MCP - thousands of ranked skills, loaded into your agent mid-task. No install.Get it →
intellectronica avatar

Notion Api

  • 60.4k installs
  • 279 repo stars
  • Updated April 25, 2026
  • intellectronica/agent-skills

notion-api is a reference agent skill that documents Notion API block types and JSON payload structures for developers building agents or automations that read and write Notion pages and databases.

Key points

  • Complete reference for every Notion block type including paragraph, heading_1-3, quote, callout, to_do, toggle, code, im
  • Documents all common block fields: id, parent, created_time, last_edited_time, has_children, archived, rich_text, color,
  • Shows exact JSON shapes required for API create/update calls

Notion Api by the numbers

  • 60,368 all-time installs (skills.sh)
  • +2,760 installs in the week ending Jul 28, 2026 (Skillselion tracking)
  • Ranked #14 of 4,386 Backend & APIs skills by installs in the Skillselion catalog
  • Security screen: HIGH risk (skills.sh audit)
  • Data as of Jul 28, 2026 (Skillselion catalog sync)
From the docs

What notion-api says it does

# Notion Block Types Reference This document provides comprehensive documentation for all supported block types in the Notion API. ## Block Structure Every block contains these common fields:
SKILL.md
npx skills add https://github.com/intellectronica/agent-skills --skill notion-api

Add your badge

Show developers this skill is listed on Skillselion. Paste this into your README.

Listed on Skillselion
Installs60.4k
repo stars279
Security audit2 / 3 scanners passed
Last updatedApril 25, 2026
Repositoryintellectronica/agent-skills

How do you structure Notion API block payloads correctly?

Generate accurate Notion API block payloads and understand response structures when building agents or automations that write to or read from Notion databases and pages

Who is it for?

Developers building Notion-integrated agents, automations, or backend jobs that create and update pages and database entries.

Skip if: Teams needing OAuth setup guides, Notion workspace admin, or non-Notion CMS integrations without API block manipulation.

When should I use this skill?

User builds Notion automations, asks about Notion block types, page append payloads, or database API response structures.

What you get

Valid Notion block JSON payloads, type-specific property maps, and accurate response parsing patterns

  • Valid Notion block JSON payloads
  • Block type reference mappings

Files

SKILL.mdMarkdownGitHub ↗

Notion API Skill

This skill enables interaction with Notion workspaces through the Notion REST API. Use curl and jq for direct REST calls, or write ad-hoc scripts as appropriate for the task.

Authentication

API Key Handling

1. Environment Variable: Check if NOTION_API_TOKEN is available in the environment 2. User-Provided Key: If the user provides an API key in context, use that instead 3. No Key Available: If neither is available, use AskUserQuestion (or equivalent) to request the API key from the user

IMPORTANT: Never display, log, or send NOTION_API_TOKEN anywhere except in the Authorization header. Confirm its existence, ask if missing, use it in requests—but never echo or expose it.

Request Headers

All requests require these headers:

-H "Authorization: Bearer $NOTION_API_TOKEN" \
-H "Notion-Version: 2025-09-03" \
-H "Content-Type: application/json"

Verifying Authentication

Test the API key by retrieving the bot user:

curl -s "https://api.notion.com/v1/users/me" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" | jq

Base URL and Conventions

  • Base URL: https://api.notion.com
  • API Version: 2025-09-03 (required header)
  • Data Format: JSON for all request/response bodies
  • IDs: UUIDv4 format (dashes optional in requests)
  • Timestamps: ISO 8601 format (2020-08-12T02:12:33.231Z)
  • Property Names: snake_case
  • Empty Values: Use null instead of empty strings

Rate Limits

  • Average: 3 requests per second per integration
  • Bursts: Brief bursts above this limit are allowed
  • Rate Limited Response: HTTP 429 with Retry-After header
  • Strategy: Implement exponential backoff when receiving 429 responses

Request Size Limits

TypeLimit
Maximum block elements per payload1000
Maximum payload size500KB
Rich text content2000 characters
URLs2000 characters
Equations1000 characters
Email addresses200 characters
Phone numbers200 characters
Multi-select options100 items
Relations100 related pages
People mentions100 users
Block arrays per request100 elements

Confirmation for Destructive Operations

IMPORTANT: Before executing any operation that modifies or deletes data, ask the user for confirmation. This includes:

  • Updating pages or blocks
  • Deleting/archiving pages or blocks
  • Modifying database schemas
  • Creating pages (if multiple or in batch)
  • Any bulk operations

For a logical group of related operations, a single confirmation is sufficient.

Core API Endpoints

Search

Search across all accessible pages and databases:

curl -s -X POST "https://api.notion.com/v1/search" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" \
  -H "Content-Type: application/json" \
  -d '{
    "query": "search term",
    "filter": {"property": "object", "value": "page"},
    "sort": {"direction": "descending", "timestamp": "last_edited_time"},
    "page_size": 100
  }' | jq

Filter values: "page" or "data_source" (or omit for both)

Pages

Retrieve a Page
curl -s "https://api.notion.com/v1/pages/{page_id}" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" | jq

Note: This returns page properties, not content. For content, use "Retrieve block children" with the page ID.

Create a Page
curl -s -X POST "https://api.notion.com/v1/pages" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" \
  -H "Content-Type: application/json" \
  -d '{
    "parent": {"page_id": "parent-page-id"},
    "properties": {
      "title": {
        "title": [{"text": {"content": "Page Title"}}]
      }
    },
    "children": [
      {
        "object": "block",
        "type": "paragraph",
        "paragraph": {
          "rich_text": [{"type": "text", "text": {"content": "Paragraph content"}}]
        }
      }
    ]
  }' | jq

Parent options:

  • {"page_id": "..."} - Create under a page
  • {"database_id": "..."} - Create in a database (legacy)
  • {"data_source_id": "..."} - Create in a data source (API v2025-09-03+)
Update a Page
curl -s -X PATCH "https://api.notion.com/v1/pages/{page_id}" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" \
  -H "Content-Type: application/json" \
  -d '{
    "properties": {
      "title": {"title": [{"text": {"content": "Updated Title"}}]}
    },
    "icon": {"type": "emoji", "emoji": "📝"},
    "archived": false
  }' | jq

Additional update options: cover, is_locked, in_trash

Archive (Delete) a Page
curl -s -X PATCH "https://api.notion.com/v1/pages/{page_id}" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" \
  -H "Content-Type: application/json" \
  -d '{"archived": true}' | jq
Retrieve a Page Property Item

For properties with more than 25 references:

curl -s "https://api.notion.com/v1/pages/{page_id}/properties/{property_id}" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" | jq

Blocks (Page Content)

Retrieve Block Children
curl -s "https://api.notion.com/v1/blocks/{block_id}/children?page_size=100" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" | jq

Use the page ID as block_id to get page content. Check has_children on each block for nested content.

Append Block Children
curl -s -X PATCH "https://api.notion.com/v1/blocks/{block_id}/children" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" \
  -H "Content-Type: application/json" \
  -d '{
    "children": [
      {
        "object": "block",
        "type": "heading_2",
        "heading_2": {
          "rich_text": [{"type": "text", "text": {"content": "New Section"}}]
        }
      },
      {
        "object": "block",
        "type": "paragraph",
        "paragraph": {
          "rich_text": [{"type": "text", "text": {"content": "Content here"}}]
        }
      }
    ]
  }' | jq

Maximum 100 blocks per request, up to 2 levels of nesting.

Position options in request body:

  • Default: appends to end
  • "position": {"type": "start"} - Insert at beginning
  • "position": {"type": "after_block", "after_block": {"id": "block-id"}} - Insert after specific block
Retrieve a Block
curl -s "https://api.notion.com/v1/blocks/{block_id}" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" | jq
Update a Block
curl -s -X PATCH "https://api.notion.com/v1/blocks/{block_id}" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" \
  -H "Content-Type: application/json" \
  -d '{
    "paragraph": {
      "rich_text": [{"type": "text", "text": {"content": "Updated content"}}]
    }
  }' | jq

The update replaces the entire value for the specified field.

Delete a Block
curl -s -X DELETE "https://api.notion.com/v1/blocks/{block_id}" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" | jq

Moves block to trash (can be restored).

Databases

Retrieve a Database
curl -s "https://api.notion.com/v1/databases/{database_id}" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" | jq

Returns database structure including data sources and properties.

Query a Database
curl -s -X POST "https://api.notion.com/v1/databases/{database_id}/query" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" \
  -H "Content-Type: application/json" \
  -d '{
    "filter": {
      "property": "Status",
      "select": {"equals": "Done"}
    },
    "sorts": [
      {"property": "Created", "direction": "descending"}
    ],
    "page_size": 100
  }' | jq

See references/filters-and-sorts.md for comprehensive filter and sort documentation.

Create a Database
curl -s -X POST "https://api.notion.com/v1/databases" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" \
  -H "Content-Type: application/json" \
  -d '{
    "parent": {"page_id": "parent-page-id"},
    "title": [{"type": "text", "text": {"content": "My Database"}}],
    "is_inline": true,
    "initial_data_source": {
      "properties": {
        "Name": {"title": {}},
        "Status": {
          "select": {
            "options": [
              {"name": "To Do", "color": "red"},
              {"name": "In Progress", "color": "yellow"},
              {"name": "Done", "color": "green"}
            ]
          }
        },
        "Due Date": {"date": {}}
      }
    }
  }' | jq
Update a Database
curl -s -X PATCH "https://api.notion.com/v1/databases/{database_id}" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" \
  -H "Content-Type: application/json" \
  -d '{
    "title": [{"text": {"content": "Updated Title"}}],
    "description": [{"text": {"content": "Database description"}}]
  }' | jq

Data Sources (API v2025-09-03+)

Data sources are individual tables within a database. As of API version 2025-09-03, databases can contain multiple data sources.

Create a Data Source
curl -s -X POST "https://api.notion.com/v1/data_sources" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" \
  -H "Content-Type: application/json" \
  -d '{
    "parent": {"type": "database_id", "database_id": "database-id"},
    "title": [{"type": "text", "text": {"content": "New Data Source"}}],
    "properties": {
      "Name": {"title": {}},
      "Description": {"rich_text": {}}
    }
  }' | jq

Users

List All Users
curl -s "https://api.notion.com/v1/users?page_size=100" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" | jq
Retrieve a User
curl -s "https://api.notion.com/v1/users/{user_id}" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" | jq
Retrieve Bot User (Self)
curl -s "https://api.notion.com/v1/users/me" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" | jq

Comments

Retrieve Comments
curl -s "https://api.notion.com/v1/comments?block_id={block_id}&page_size=100" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" | jq

Use a page ID as block_id for page-level comments.

Create a Comment

On a page:

curl -s -X POST "https://api.notion.com/v1/comments" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" \
  -H "Content-Type: application/json" \
  -d '{
    "parent": {"page_id": "page-id"},
    "rich_text": [{"type": "text", "text": {"content": "Comment content"}}]
  }' | jq

Reply to a discussion:

curl -s -X POST "https://api.notion.com/v1/comments" \
  -H "Authorization: Bearer $NOTION_API_TOKEN" \
  -H "Notion-Version: 2025-09-03" \
  -H "Content-Type: application/json" \
  -d '{
    "discussion_id": "discussion-id",
    "rich_text": [{"type": "text", "text": {"content": "Reply content"}}]
  }' | jq

Note: The API cannot start new inline discussion threads or edit/delete existing comments.

Pagination

Paginated endpoints return:

  • has_more: Boolean indicating more results exist
  • next_cursor: Cursor for the next page
  • results: Array of items

To iterate through all results:

1. Make the initial request (omit start_cursor) 2. Check has_more in the response 3. If true, extract next_cursor and include it as start_cursor in the next request 4. Repeat until has_more is false

Example request with cursor:

{
  "page_size": 100,
  "start_cursor": "v1%7C..."
}

Error Handling

HTTP StatusCodeDescription
400invalid_jsonRequest body is not valid JSON
400invalid_request_urlURL is malformed
400invalid_requestRequest is not supported
400validation_errorRequest body doesn't match expected schema
400missing_versionMissing Notion-Version header
401unauthorizedInvalid bearer token
403restricted_resourceToken lacks permission
404object_not_foundResource doesn't exist or not shared with integration
409conflict_errorData collision during transaction
429rate_limitedRate limit exceeded (check Retry-After header)
500internal_server_errorUnexpected server error
503service_unavailableNotion unavailable or 60s timeout exceeded
503database_connection_unavailableDatabase unresponsive
504gateway_timeoutRequest timeout

Best Practices

1. Store IDs: When creating pages/databases, store the returned IDs for future updates 2. Use Property IDs: Reference properties by ID rather than name for stability 3. Batch Operations: Aggregate multiple small operations into fewer requests 4. Respect Rate Limits: Implement exponential backoff for 429 responses 5. Check `has_more`: Always handle pagination for list endpoints 6. Validate Before Updates: Retrieve current state before making updates 7. Use Environment Variables: Never hardcode API keys 8. Handle Errors Gracefully: Check response status codes and error messages 9. Schema Size: Keep database schemas under 50KB for optimal performance 10. Properties Limit: Properties with >25 page references require separate retrieval

References

For detailed documentation on specific topics, see:

  • references/block-types.md - All supported block types and their structures
  • references/property-types.md - Database property types and value formats
  • references/filters-and-sorts.md - Database query filter and sort syntax
  • references/rich-text.md - Rich text object structure and annotations

Related skills

How it compares

Use notion-api for block-level Notion API JSON reference during code generation, not for high-level product management workflows.

FAQ

What does the notion-api skill document?

notion-api documents Notion API block types, shared block fields, and type-specific JSON properties with examples such as paragraph blocks. Developers use it to generate accurate create, update, and append payloads for Notion pages and databases.

Which block fields are common across Notion types?

Notion blocks documented by notion-api share fields including object, id, type, parent, created_time, last_edited_time, created_by, last_edited_by, archived, in_trash, and has_children, plus a type-keyed properties object.

When should agents load notion-api?

Agents should load notion-api when a developer integrates Notion read or write operations and needs correct block JSON, response parsing, or database page structures without trial-and-error API errors.

Is Notion Api safe to install?

skills.sh reports 2 of 3 security scanners passed. Review the Security Audits panel on this page before installing in production.

Backend & APIsagentsautomation

This week in AI coding

Five minutes, every Monday - the tools, releases and tactics for developers.

unsubscribe anytime.