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

No annotations provided, so description carries full burden. While 'Update' implies mutation, it doesn't specify if this is a partial update (merging properties) or full replacement, doesn't mention idempotency, permissions required, or side effects. Significant gap 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?

Extremely terse (4 words) but under-specified rather than elegantly concise. No structure issues, but the brevity wastes opportunity to provide necessary behavioral context. Neither verbose nor effectively structured.

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?

For a mutation tool with nested object parameters (properties with additionalProperties), the description is insufficient. It doesn't explain what page properties are valid, update semantics, or expected behavior given the lack of output schema.

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 has 100% description coverage with clear parameter descriptions ('ID of the page to update', 'Updated page properties'). The description adds no semantic value beyond the schema, but meets the baseline for high-coverage schemas.

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 'Update an existing page' is tautological, restating the tool name 'update_page' with minimal addition ('existing'). It fails to distinguish from siblings like 'append_blocks' or 'create_page' regarding content modification scope.

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 provided on when to use this versus 'append_blocks' (for adding content) or 'create_page' (for new pages). No prerequisites or error conditions mentioned (e.g., what happens if page_id doesn't exist).

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