claim_area

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

Beyond the readOnlyHint=false annotation, the description discloses a genuine behavioral trait: claims auto-expire after CONTEXT_MCP_CLAIM_MINUTES (default 30), which tells the agent reservations are not permanent. However, for a mutation tool it omits the critical conflict semantics — what happens if another agent already holds the claim, whether the call fails or overwrites, and whether the caller receives a token needed later for release.

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, both earning their place: the first states action and effect, the second states lifetime and its configuration knob. The most decision-relevant information is front-loaded with zero 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?

The expiry model is covered, which is important, but there is no output schema and the description never indicates what a successful call returns or how failures on an already-claimed area surface. For a coordination primitive with concurrency implications, that leaves a meaningful gap.

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% and the single parameter is documented as "File path or area to claim," so the description adds nothing beyond it. Baseline 3 applies when the schema already fully documents a one-parameter 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?

The description gives a specific verb and resource ("Claim a file or area") plus a stated purpose ("so other agents avoid it"), which separates it from release_area and list_claims without naming them. It stops short of explicitly routing to those siblings, so it is clear but not maximally differentiated.

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?

The rationale sentence implies when to call it (before working on a shared area), and the expiry line implies a time-bound reservation model. There is no explicit when-not-to-use guidance, no mention of what to do if the claim is already held, and no reference to release_area as the lifecycle counterpart.

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