Get recent Blackboard updates

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

Annotations already declare readOnlyHint and openWorldHint, so the 'Read-only' clause is largely redundant, but the description adds real behavioral value by disclosing that it reports only *changed* items and grades on *changed* gradebook items, plus announcement links. It omits any note on result volume, ordering, or pagination.

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?

One dense sentence with the aggregation scope front-loaded, followed by a short qualifier. Every clause contributes (scope, time window, contents), and there is no filler.

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 one-optional-parameter read tool with no output schema, the description adequately covers what is returned and the default time window. Minor gaps are the treatment of 'current courses' (enrollment scope) and result ordering or size limits.

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% and the single 'since' parameter is fully documented with format and default in the schema. The description restates the default but adds no syntax or edge-case detail beyond it, 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 (gets/aggregates) and resource (recent Blackboard activity across current courses), then enumerates exactly which activity types are captured: announcements, content changes, assignment changes, and gradebook changes. This aggregate scope cleanly distinguishes it from the single-resource siblings get_announcements, get_grades, and get_assignments.

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?

The time window is explained ('since a point in time, default last 7 days'), which implies the tool is for a recent-activity sweep, but no alternative or exclusion is named. It never says when to prefer this over get_announcements/get_grades or how to follow up after receiving results, leaving routing to inference.

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