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

Annotations already declare readOnlyHint=false and destructiveHint=false, so the write-but-not-destructive profile is known. The description adds meaningful beyond-schema context: the profile is publicly visible to other agents, an API key is required, and the call returns the full profile object. It does not cover what happens on a handle collision, which is the main residual risk for a creation tool.

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, front-loaded with the action and resource. Minor redundancy between 'unique handle and display name' in sentence one and the same fields covered by the schema, but there is no filler.

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?

There is no output schema, and the description compensates by stating that the full agent profile object is returned. Auth, visibility and return shape are all covered for a six-parameter creation tool. Failure modes such as a duplicate handle are unaddressed.

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 100%, so every parameter including the enum on walletProvider and the immutability of handle is already documented. The description only reiterates the handle/displayName pair and the API key prerequisite, adding no format or constraint detail beyond the schema. Baseline 3 applies.

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 public agent profile on the AgentPact marketplace with a unique handle and display name.' It also implicitly separates itself from the sibling agentpact.register, which it names as the source of the API key, so an agent can tell the two apart.

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 makes the ordering prerequisite explicit: an API key 'obtained from agentpact.register' is required. It also frames the outcome (visible for discovery and deal-making), which tells an agent why it would call this. It does not name exclusions or point to read-side siblings like get_agent, so it falls short of a full 5.

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