notion_append_blocks

Append an array of Notion block JSON objects to an existing page (chunked into ≤100-block requests). Requires agent_settings.allow_notion_writes (default true). Returns { appended }.

SERVERMax MCP Server SOURCEdigital-crew-technologies/max-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/digital-crew-technologies-max-mcp-server/notion-append-blocks.md

WHAT IT DOES

What notion_append_blocks does on Max MCP Server

AI agents use notion_append_blocks to create or update resources in Max MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Max MCP Server environment.

RISK

Why notion_append_blocks is rated Medium

This tool writes new content to an existing Notion page by appending blocks. It is a reversible write operation (blocks can be deleted afterwards), not destructive. The blast radius is medium since a misused agent could append unwanted content to any accessible Notion page, but it does not delete or overwrite existing data.

From the tool's definition Append an array of Notion block JSON objects to an existing page... Returns { appended }

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs notion_append_blocks safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Max MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For notion_append_blocks, this is the rule to start with:

notion_append_blocks Rate-limited

notion_append_blocks stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "notion_append_blocks": {
      "limits": [
        {
          "counter": "notion_append_blocks_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Max MCP Server, apply this rule, and every notion_append_blocks call is checked against it from then on.

FAQ

Questions about notion_append_blocks

What does the notion_append_blocks tool do? +

Append an array of Notion block JSON objects to an existing page (chunked into ≤100-block requests). Requires agent_settings.allow_notion_writes (default true). Returns { appended }. It is categorised as a Write tool in the Max MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on notion_append_blocks? +

Register the Max MCP Server MCP server in PolicyLayer and add a rule for notion_append_blocks: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Max MCP Server. Nothing to install.

What risk level is notion_append_blocks? +

notion_append_blocks is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit notion_append_blocks? +

Yes. Add a rate_limit block to the notion_append_blocks rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block notion_append_blocks completely? +

Set action: deny in the PolicyLayer policy for notion_append_blocks. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides notion_append_blocks? +

notion_append_blocks is provided by the Max MCP Server MCP server (digital-crew-technologies/max-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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