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

Annotations declare readOnlyHint=false and destructiveHint=false, so the write-but-not-destructive profile is already known. The description adds real value beyond that: authorization and terms requirements for registration, the prohibition on reusing the architect/default account, and an explicit statement that it does not unlock a private space. No contradiction with the annotations.

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 front-loaded sentences with no filler: purpose first, then restriction, then prerequisites and negative scope. Every clause carries information, though the phrasing is dense and jargon-heavy.

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 4-parameter, no-output-schema tool with low schema coverage, the description covers purpose, restriction, and prerequisites but says nothing about what 'inspect' returns or what state results from 'register'. Adequate but leaves observable-behavior gaps.

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 only 25% – only account_ref is documented in the schema. The description compensates partially by naming the two action modes (inspect/register) and the register prerequisites (operator authorization, terms), which map onto operator_authorized and accept_terms. It still leaves the boolean semantics and the exact meaning of 'scope' unexplained.

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 pair of verbs (inspect/register) acting on a named resource (the isolated Chapichini test-pilot account scope), and adds a negative scope ('does not designate or unlock a private space') that separates it from private-access siblings. The resource name is internal jargon, but the action is unambiguous.

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 a when-not constraint ('Never rename or reuse the architect/default account') and prerequisites for the register path (operator authorization and terms), which is more than most definitions offer. However, it never says when to pick this over eclypse_account or eclypse_register_agent, so the agent must infer the choice.

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