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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is fully covered. The description's only additional contribution is domain context about what a workspace contains (chat + canvas of nodes), which aids interpretation but reveals nothing about pagination behavior or result volume. With annotations carrying the behavioral burden, 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 short sentences, zero waste, with the core action front-loaded. The second sentence is compact and earns its place by defining a domain term the agent will encounter repeatedly across sibling tools.

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?

No output schema exists, so the description ideally would indicate what a listed workspace contains (e.g. id, name, timestamps). Pagination semantics are covered by the schema and safety by annotations, but the return shape remains entirely unspecified. It is adequate to invoke correctly but not complete.

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%, with both brandId and the nested page/limit/cursor documented in the schema, including the guidance to follow nextCursor rather than enlarging the page. The description adds nothing beyond that baseline, merely restating the brand scoping. 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 and resource scoped by owner: "Lists workspaces for a brand." The plural 'list' plus the brand scoping makes it distinguishable from the singular fuzz_get_workspace and from fuzz_list_workspace_contents, though no sibling is named explicitly. The second sentence clarifies what a workspace is, reinforcing the resource identity.

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?

There is no explicit guidance on when to use this versus fuzz_get_workspace (single workspace) or fuzz_list_workspace_contents (contents of one workspace). The brand scoping only implies the usage context. No prerequisites, exclusions, or alternatives are stated.

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