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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds that the returned content is the 'full text' of a 'published' article (useful scope detail), but says nothing about return format, truncation, or errors. With annotations present, a 3 is appropriate.

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 tight sentences with zero filler; the purpose and the input provenance are both front-loaded.

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 simple read-only single-resource tool with no output schema, the description covers what is returned and where the input comes from. Only minor gaps remain, such as the text format (markdown vs HTML) and error behavior for unpublished slugs.

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% and the single slug parameter is documented in both schema and description identically ('from list_resources'). Baseline 3 applies since the schema does the heavy lifting and the description adds no new syntax or format meaning.

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+resource ('The full text of one published Beacon article'), which clearly distinguishes a single-item fetch from list_resources. It does not explicitly differentiate from get_overview, so it falls short of the 5 mark.

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 clear chaining context by stating the slug comes from list_resources, so an agent knows this is a follow-up call to a listing. No when-not-use guidance or exclusion against siblings like get_overview.

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