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

Goes well beyond the annotations: it discloses the real-world effect ('anyone who has it sees the board and the boards inside it, without a Milanote account'), i.e. that nested boards become publicly reachable — exactly the context an agent needs given destructiveHint=true and openWorldHint=true. It also discloses the stable-link semantics across republish/unpublish, the interactive confirmation default with an opt-out, and the owner-approval wait, none of which are in the structured fields.

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?

Front-loaded with the action and return value, and every later sentence adds operational value (link stability, approval wait, confirmation). The only waste is mild redundancy between 'anyone can open without signing up' and 'without a Milanote account', which restates the same access property twice.

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 3-parameter mutation tool with no output schema, it covers the return value (the link), the public-exposure scope including nested boards, link persistence, the off-switch sibling, and the asynchronous owner-approval flow. An agent has everything needed to call it correctly and to warn the user about consequences.

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 board_id, allow_comments, and allow_downloads are already fully documented in the schema. The description only alludes to 'these settings' without adding format, defaults, or interaction rules beyond what the schema states, so the baseline 3 applies.

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?

States a specific verb+resource ('Turn on a board's read-only link') and immediately names the concrete outcome ('returns the link'). It also anchors to the familiar UI action ('Does what Share, Enable read-only link does'), which lets an agent distinguish it from publish-adjacent siblings like get_sharing, invite_editor, and unpublish_board.

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?

Explicitly names the inverse tool ('unpublish_board turns it off') and describes re-publish behavior, so the when-to-use and when-not-to-use pair is mostly covered. It does not contrast with get_sharing or explain when to inspect sharing state instead of mutating it, which keeps it short of a 5.

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