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

Annotations establish the safety profile (readOnlyHint=false, destructiveHint=false), so the mutation nature is already covered. The description does add one genuine behavioral fact beyond the annotations: the node status transitions to 'assigned'. However, it omits what happens if the node is already assigned, whether the change is reversible, and any permission requirements.

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?

Three short sentences, front-loaded with the action and resource, followed by the observable side effect and the rationale. No filler, though the third sentence is more motivational color than operational guidance.

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 non-destructive mutation tool with no output schema and fully documented parameters, the description covers purpose and the resulting state change. It leaves gaps around conflict handling, authorization, and the response shape, but these are not severe given the annotation coverage.

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%, so nodeId, requestId, and operatorId are already fully documented in the schema, including the note that operatorId can be a kernel ID or wallet address. The description adds no parameter-level detail beyond that, which is the expected baseline when the schema does the heavy lifting.

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?

The description states a specific verb+resource pairing: assigning an operator to a capability node within a request. This is unambiguous and clearly distinct from read/query siblings like pcc_get_request. It stops short of differentiating itself from the nearby pcc_update_node_status, which also mutates node state.

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?

It conveys the intent behind the operation ('Operators claim nodes to indicate they will execute that capability'), which implies when it's used, but gives no explicit when-not conditions, prerequisites, or named alternatives such as pcc_update_node_status.

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