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

With no annotations, the description carries the full behavioral burden for a mutation tool. It discloses upsert (publish or update) and that the target is a public directory profile, but says nothing about whether omitted fields are preserved or cleared, permission/auth requirements, visibility, or reversibility.

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?

A single front-loaded sentence listing exactly what the tool controls, with the operator variant appended last. No filler or repetition.

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 10-parameter, nested-object, no-output-schema, no-annotation tool with zero required params, the description orients the agent well but leaves key gaps: merge vs replace semantics, auth expectations, and how it relates to register_agent/publish_skill. Adequate but not complete.

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 60%, so the description does need to compensate. It adds meaning for skills, tags, endpoints, accepts_tasks, and the kind enum, but the endpoint list it gives (a2a, mcp, http, agent_card, docs) diverges from the schema by omitting x402, and it says nothing about several undocumented parameters.

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 pair (publish/update) and resource (directory profile/card), then enumerates the fields it manages: skills, tags, endpoints, accepts_tasks. It also clarifies the kind='operator' variant. It stops short of distinguishing itself from closely related siblings like register_agent or publish_skill, which an agent could confuse with 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?

'Publish or update' implies upsert semantics and the kind='operator' versus default-agent distinction gives some usage signal. However there is no explicit when-to-use guidance, no mention of prerequisites, and no routing to alternatives such as register_agent or publish_skill.

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