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SadaaYogee

Notion MCP Server

by SadaaYogee

Update Simple Content

notion_update_content
Idempotent

Update an existing Notion block's text or fields using a block ID and matching type, without raw JSON. Supports paragraphs, headings, lists, to-dos, quotes, callouts, and code blocks.

Instructions

Update an existing Notion block without writing raw Notion block JSON. Use this after notion_read_page gives you a block ID and you need to replace the text or simple fields of an existing paragraph, heading, list item, todo, quote, callout, or code block. The item.type must match the block's current type; this tool will reject mismatches so the model can correct itself.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
itemYesA simplified Notion content item for updating an existing editable block. The type must match the current block type.
formatNoSpecify the response format. 'json' returns the original data structure, 'markdown' returns a more readable format. Use 'markdown' when the user only needs to read the page and isn't planning to write or modify it. Use 'json' when the user needs to read the page with the intention of writing to or modifying it.
block_idYesThe existing block ID to update. Use notion_read_page to find block IDs.It should be a 32-character string (excluding hyphens) formatted as 8-4-4-4-12 with hyphens (-).
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description explains that the tool validates type matches and rejects mismatches, adding behavioral context beyond annotations. It reinforces the idempotent and non-destructive nature implied by annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise yet comprehensive, front-loading the main purpose in a single sentence. Every sentence adds value without redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description covers all key aspects: purpose, usage flow, constraints, and validation behavior. For a tool without output schema, it provides sufficient context for correct invocation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Although schema coverage is 100%, the description adds meaningful context: the block_id should come from notion_read_page, and the type must match the current block. This enhances understanding beyond raw schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool updates an existing Notion block without requiring raw JSON, and lists the supported block types. It distinguishes itself from related tools like notion_update_block and notion_append_content.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It provides explicit usage guidance: use after notion_read_page to get a block ID, and for replacing text or simple fields. It also warns that type mismatches will be rejected, helping the agent avoid errors.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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