create_space_tag

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. As a creation tool, it implies a mutation (creating a space tag), but it doesn't disclose whether the tag is immediately available for tasks, whether duplicate names are rejected, whether there are limits on tag counts, or what happens on duplicate creation. For a mutation tool with zero annotation coverage, this is a notable gap.

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, efficient sentence with zero wasted words. It's appropriately terse for a simple creation tool, though it could add a touch more value. It's not padded or redundant.

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 no annotations, no output schema, and 4 parameters, the description is minimal. It doesn't explain tag semantics (how tags relate to tasks), uniqueness constraints, color format expectations, or error behavior. Since get_space_tags and add_tag_to_task are sibling tools, context about tag lifecycle would help the agent understand the tool's role. The description does the bare minimum.

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 description coverage is 100%, so all four parameters (space_id, name, tag_bg, tag_fg) are documented in the schema itself. The description adds no additional parameter meaning—it doesn't clarify that tag_bg and tag_fg are optional display properties, that name should be unique within the space, or that space_id must reference an existing space. Baseline 3 is appropriate when the schema carries the informational load, but the description contributes nothing beyond it.

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 'Create a new tag in a space' has a specific verb (Create) + resource (tag) + scope (in a space), clearly distinguishing it from siblings like get_space_tags, update_space_tag, and delete_space_tag. It could mention what a tag is used for, but the core purpose is clear and distinct from related tools.

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. There's no mention that this is a prerequisite before assigning tags to tasks (add_tag_to_task), or that you should check existing tags with get_space_tags first to avoid duplicates. The description gives no usage context or exclusions.

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