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

Annotations already declare read-only, idempotent, non-destructive, closed-world behavior, so the safety profile is covered. The description supplies a genuinely non-obvious behavioral trait beyond that: long option lists are truncated in normal output, with a documented workaround. It does not mention whether results are scoped to a plugin/version context or cached.

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 sentences, both load-bearing: the first defines the payload, the second discloses truncation and the remedy. Front-loaded with the return shape and no redundant restatement of the title.

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?

With no output schema, the description carries the return-shape burden and does so by listing the fields returned plus the truncation caveat. It leaves the sequencing relative to list_config_types and validate_config_files implicit, which an agent would need to work out from the sibling descriptions.

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%, so baseline is 3. The description adds meaning by linking the truncation behavior to the `field` parameter: passing field returns that single field with every allowed value, which explains *why* the parameter exists rather than just what it accepts.

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 resource and verb: returns one config type's fields as Forge edits/validates them, and enumerates the returned attributes (key, value type, default, required, description, allowed values). It never explicitly contrasts with list_config_types, which the schema references, so sibling differentiation relies on the reader inferring it.

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 second sentence clearly explains the `field` escape hatch for full option lists, implying 'use field when you need all values.' There is no explicit when-to-use statement versus list_config_types (discovery) or validate_config_files (checking), so the agent must infer the workflow.

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