bookmarks_create

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

No annotations are provided, so the description carries the full behavioral burden. It discloses the cross-profile ID constraint and the profile prerequisite, which is genuine beyond-schema value. However, it never says what happens on a duplicate URL, what errors look like, or what permissions are needed for a mutating operation.

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?

Two short blocks: the action on the first line, the prerequisite and ID-locality caveat immediately after. No filler, and the most failure-prone constraint is stated up front.

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?

An output schema exists, so return values need no explanation. But for an unannotated mutation tool with three required parameters, the description omits duplicate handling and failure behavior, leaving real gaps for an agent deciding whether a retry or a different tool is appropriate.

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 75%, so title, url, and parent_id are already documented, including the rule that parent_id must be a folder. The description adds needed meaning for the undocumented profile_id by naming profiles_list as the source and noting ID locality, but contributes nothing for the other three.

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 and resource: 'Create a new bookmark'. An agent can tell it apart from bookmarks_create_folder in the sibling list, though the description itself does not explicitly contrast the two.

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?

Gives an explicit prerequisite and a routing hint: obtain profile_id from profiles_list. It also warns that all object IDs are profile-local and must never be reused across profiles. It lacks an explicit 'use bookmarks_create_folder instead if...' exclusion, so it stops 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.