use_workspace

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

With no annotations, the description carries the full burden and does so: it discloses process isolation, that handles do NOT cross workspaces, the pool cap env var and default (4), idle reaping timeout (900s), and the raise-on-overflow failure mode. That is unusually rich behavioral context for a stateful tool.

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, then rationale, then limits and return shape. Three short paragraphs, all earning their place, though the concurrency rationale slightly overlaps the opening sentence.

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 specifies the return shape ({workspace, freecad, workspaces}), plus env-var configuration and failure behavior. Nothing needed to invoke or recover from this call is missing.

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 0% and the single required param `name` has no description, so the description must compensate — and it does, conveying uniqueness and the reserved "default" value. It stops short of format constraints (allowed characters, length, case sensitivity) for the one input.

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 — claim/create an isolated workspace and make it the target of subsequent calls — and immediately distinguishes it from siblings list_workspaces and close_workspace by explaining that it binds future calls. An agent can tell exactly what this does.

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?

Explicitly says when to call it (once, up front, by each concurrent agent with a unique name), what happens on failure (claiming beyond a full pool raises), and how to exit (pass "default"). The alternative flows are named rather than implied.

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