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

With annotations only declaring readOnly=false, destructive=false, this description carries real additional context: attaching an already-present KB is a no-op (idempotency), the operation may require a confirmation round-trip, and it describes the actual runtime effect on the model's tools and prompt. No contradiction with the annotation profile.

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?

Front-loaded with the core action and its two behavioral modes, then workflow ordering. Slightly dense as one paragraph and the interface re-grant aside is a bit of a tangent, but no sentence is 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?

No output schema exists, yet the description surfaces the one return value that matters operationally (needs_confirmation) and pairs it with the approvalId parameter, plus precondition and ordering. An agent has everything needed to invoke this correctly.

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%, so the baseline is 3; the description adds meaning beyond the schema by explaining what the knowledgeBaseId choice entails (docs vs tabular behavior) and by tying approvalId to the needs_confirmation return. It stops short of describing workspace semantics, which the schema already handles well.

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 (attach a knowledge base to an AGENT flow's draft) and immediately explains the two distinct behaviors depending on KB type: docs KB becomes a search tool, tabular KB injects tables into the prompt plus a query tool. It distinguishes itself from siblings by naming workbench_flows_publish and workbench_flows_run, and from the workbench_kb_* family by scoping to flow attachment.

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 explicit sequencing: attach BEFORE publish, then try it with workbench_flows_run, then publish; plus the exception path (re-grant a newer version to anything pinning an older one, e.g. an interface grant). It also states a precondition (flow needs a system prompt, scaffold it) and multi-call mechanics (needs_confirmation / approvalId).

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