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

Annotations already declare readOnly/idempotent/non-destructive, and the description adds substantial context beyond them: fields return 'released: false' until agent protocol files are enabled for the workspace, and self-registered sandbox keys are refused with 403 until claimed. That is exactly the auth/state behavior an agent needs before calling.

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?

Front-loads the resource and list of returned fields, then appends preconditions. The first sentence is long and carries a heavy nested parenthetical, which costs some readability, but no sentence is wasted.

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 burden of explaining return values, and it does so by naming each field including the released flag semantics. Only minor gaps remain, such as error shapes beyond the 403 case.

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?

Zero parameters, so there is nothing to disambiguate and the baseline of 4 applies. The description correctly implies a no-argument read scoped to the caller's own workspace.

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?

Opens with a specific verb+resource ('Read your Personal Agent Protocol file') and enumerates exactly what is returned: org name, domain, verification status, the poppy.json to publish, and its address. It does not name the sibling write/verify tools (set_agent_protocol, verify_agent_protocol), so differentiation is implied by 'Read' rather than stated.

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 concrete preconditions — a Last Price credential with routing read scope and a claimed workspace (sandbox keys get 403) — which helps an agent decide it can call this at all. But it never says when to prefer this over set_agent_protocol or verify_agent_protocol, so the alternative-selection guidance is missing.

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