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

No annotations are supplied, so the description carries the full burden. It discloses that this is a read of current values and the shape of the return, plus a pointer to serviceConfig.missingRequired for gaps, but says nothing about permissions/auth, whether the call fails or returns empty when config is unset, or how missingRequired is meant to be interpreted.

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 with the core purpose front-loaded, but the final clause 'Which required values are missing: serviceConfig.missingRequired.' is a fragment whose referent and intent are ambiguous.

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, and the description does supply the return shape, which is the main thing needed. However, for a four-required-parameter tool with no annotations, the missing error behavior and the vague missingRequired reference leave real gaps.

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 75%, with hostType documented thoroughly in the schema itself (including the cross-tool copy-from-search_extensions rule). The description adds no parameter meaning at all, and workspaceId has no schema description, so the remaining gap is not compensated.

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: reads the workspace's current config values for an extension service, and even sketches the return shape as { [name]: value }. It is clearly distinguishable from set_service_config by the 'Read' verb, though it never names that sibling.

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 an explicit applicability precondition — only valid when get_block_schema serviceConfig is non-null — and points the agent at get_block_schema as the gate. It stops short of naming alternatives such as set_service_config or list_extension_services for discovery, so no exclusions are stated.

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