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

Annotations already declare readOnly, idempotent, non-destructive, and non-open-world, so the safety profile is fully covered and the description needn't restate it. The description does add that the response is a fixed enumeration of resource types, which is modestly useful since there is no output schema, but it says nothing about format, links, 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?

Two short sentences, front-loaded with the action and the resource inventory. 'No arguments' is slightly redundant with an empty schema but costs little and heads off calls with fabricated params.

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 trivial read-only, zero-argument tool with no output schema, the description supplies the essential information: what it returns and that no input is needed. Return format details are the only notable omission, and they matter little here.

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?

Zero parameters makes this dimension trivially satisfied, and 'No arguments' is consistent with the empty schema and additionalProperties=false. Baseline 4 applies for a parameterless tool.

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 (List) and resource (developer resources) and enumerates the concrete contents: OpenAPI, MCP, llms.txt, datasets, developer portal. This is enough to distinguish it from siblings like get_tool or search_tools, though it never names an alternative to sharpen the boundary.

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?

Usage is only implied by the resource name; there is no explicit statement of when to call this versus the catalog-oriented siblings (get_catalog_context, get_catalog_meta, search_tools). 'No arguments' signals low invocation friction but is not guidance about selection.

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