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 for a mutation tool. It does not say whether removal is idempotent when a tag is absent, what permissions are required, whether other tags are untouched, or what the response contains.

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?

A single short sentence with no filler and the action front-loaded. It is efficient, though its brevity contributes to the gaps noted elsewhere rather than reflecting deliberate prioritization.

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 mutating tool with zero annotation coverage and no output schema, the description should disclose side effects, idempotency, and result shape. None of that is present, leaving an agent able to guess the intent but not the 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 description coverage is 100%, so every parameter is already documented. The phrase 'specific tags' reinforces that only the listed tags are removed rather than all tags, adding marginal meaning, but nothing is said about the interaction between project_id and project_slug or accepted tag formats. 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 ('Remove') and resource ('tags from a message'), which is enough to distinguish it from the sibling tag_message and from list_message_tags. It lacks differentiation language that would explicitly route an agent between add/remove tag operations, but the action is unambiguous.

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 on when to use this versus alternatives (e.g., tag_message for adding, or any bulk tag update path), and no prerequisites or context about which message/project combination must be supplied. The agent must infer usage entirely from the name and schema.

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