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

Goes well beyond the annotations by disclosing the key lifecycle fact that the new configuration is not primary and therefore does not reach game servers until promoted or read by alias. It also bounds the security meaning of privateKeys (hidden from game clients but visible in the dashboard, unsuitable for real secrets) and notes the audit behavior of 'reason'.

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?

Dense but front-loaded: creation, uniqueness, primary-status consequence, privateKeys caveat, then the reason requirement. Nearly every clause earns its place, though 'The configuration is created when this runs' is close to tautological and could be folded into the primary-status sentence.

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 7-parameter mutation with full schema coverage and no output schema, the description covers the important operational context: uniqueness, activation gate, private-key scope, and audit reason. The only gap is that it never hints at what comes back (e.g. the new configuration's identifier) for use in follow-up calls.

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 earns above that by adding constraints the schema does not state, such as 'comments cannot' be private and that privateKeys is for values like a random seed rather than secrets. It adds the naming uniqueness contract and the mandate to always write a description even when unasked.

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 ('Create a new configuration in this project environment, optionally with initial JSON content') and implicitly separates it from update_configuration, get_configuration, and list_configurations by describing creation-time semantics. An agent can tell what it produces 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?

Gives an explicit prerequisite ('Names must be unique — call list_configurations first') and explains the downstream alternative for activation ('set_primary_configuration'). It does not explicitly contrast create vs. update/duplicate for an existing configuration, so it falls short of a full when/when-not guide.

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