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

Annotations already declare readOnlyHint=true, openWorldHint=true, and destructiveHint=false, covering the safety profile. The description adds behavioral scope ('current open' and 'by category') but does not disclose what a summary contains (e.g., counts, values, dates) or any limitations, which matters since no output schema exists.

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, tightly worded sentence that front-loads the action and scope. Every word contributes meaning ('current open', 'Alberta Purchasing Connection', 'by category'), with no filler or redundancy.

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 zero-parameter tool with no output schema, the description is nearly complete: it names the source, the filter (open), and the grouping. The only gap is that 'summarize' is not fully specified—an agent might wonder whether the output is a text narrative or structured data—but the tool's simplicity and annotations keep this from being a major deficiency.

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?

There are zero parameters, so the input schema covers everything vacuously. The baseline for 0 params is 4, and the description adds no unnecessary parameter details. No further semantic documentation is needed.

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 uses a specific verb ('Summarize') with a clear resource ('Alberta Purchasing Connection opportunities') and scope ('current open... by category'). It distinguishes itself from siblings like find_alberta_opportunities or get_alberta_opportunity_details, which perform search or detail retrieval, by emphasizing the grouping behavior.

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 description implies a use case—obtaining a categorical overview of open opportunities—but does not explicitly state when to prefer this over alternatives or when not to use it. Sibling names are provided in context but the description itself offers no exclusions or comparisons, so guidance is only implicit.

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