setBlock

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

No annotations are provided, so the description carries the full burden of disclosure. 'Set' implies a mutating operation, but the description does not state whether existing blocks are overwritten, whether changes are reversible, what happens with invalid block IDs, or what the response/error behavior is.

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?

The description is a single, front-loaded sentence with no filler or redundancy. It communicates the operation and scope efficiently, and every word earns its place.

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?

Given no annotations, no output schema, 0% schema description coverage, nested parameters, and many sibling tools, this one-liner is under-specified. It leaves out essential invocation context such as coordinate semantics, block data format, active-project requirements, and how it relates to batch operations like setBlocks.

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 0%, and the description adds no parameter-level meaning beyond the names already present. It does not explain the coordinate system for pos, the expected format of block.id, or the purpose of the optional properties map, so it fails to compensate for the schema's lack of descriptions.

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?

Description uses a specific verb ('set') plus resource ('block'), and explicitly narrows scope to 'a single block in the active project.' This clearly distinguishes it from the sibling tool setBlocks, which implies bulk operation. An agent can understand the tool's core purpose without opening the schema.

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 description gives no guidance about when to use this tool versus setBlocks, fillBox, wall, or other block-manipulation siblings. The word 'single' implies one-block usage, but there are no explicit alternatives, exclusions, or conditions.

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