Update Single Block

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

With no annotations, the description states 'Modifies the data', indicating a write operation. However, it does not disclose whether the update merges or replaces blockData, authorization needs, or potential side effects. The example provides some clarity but leaves gaps for a mutation tool.

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

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

The description is a single sentence plus an example, which is concise and front-loaded. Every element earns its place with no redundancy.

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

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

Given the mutation nature and absence of output schema or annotations, the description lacks explanation of blockData update behavior (merge vs replace) and does not cover error scenarios or required permissions. It is incomplete for a write tool.

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

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

Schema coverage is 100%, so the baseline is 3. The description adds a concrete example demonstrating parameter usage (path, blockId, blockData), which enhances semantic understanding beyond the schema descriptions alone.

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

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

The description explicitly states the verb 'Modifies', the resource 'data of a single, existing block within a content item', and the identifier 'block ID'. It clearly distinguishes from sibling tools like plone_add_single_block and plone_remove_single_block.

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

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

No guidance is provided on when to use this tool versus alternatives (e.g., plone_update_content). It does not mention prerequisites, limitations, or scenarios where other tools are more appropriate.

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