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Notion ACTION

Update Child Block

Update a single existing child block (paragraph, heading, to-do, code, etc.) by its block ID. Use this only to mutate an existing block in place. Do NOT use to update a page's properties (database row fields) — use Update Page instead. Do NOT use to add new content to a page — use Append Block instead. Do NOT use to update a database's schema — use Update Database instead. See the documentation
  • Action
  • Writes data
  • Destructive
  • OAuth
  • SDK
  • MCP

IMPLEMENTATION

Call this tool

Connect a user's Notion account once, then configure and run Update Child Block from your backend or agent.

import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const result = await pd.actions.run({
  id: "notion-update-block",
  externalUserId: "{external_user_id}", // any stable ID for this user in your system
  configuredProps: {
    notion: { authProvisionId: "apn_xxxxxxx" },
    blockId: "Block ID",
    content: "Content",
  },
})

console.log(result)

SCHEMA

Inputs

Pipedream supplies the connected account. Your application provides the operation-specific values below. Dynamic inputs are resolved against that user's account.

Update Child Block inputs
Property Type Description
blockId Block ID string
Block ID retrieved from the Retrieve Page Content action
Required
content Content string
The content of the block. E.g. {"code": {"rich_text":[{"type":"text","text":{"content":"Updated content"}}]}} See the documentation
Required

REFERENCE

Tool details

Behavior hints are published with the component in the Pipedream registry and surface as MCP tool annotations, so an agent can reason about a tool before it calls it.

Registry key
notion-update-block
Version
0.0.11
App
Notion
Authentication
OAuth
Read-only
No
Destructive
Yes
Open world
Yes