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

Annotations already declare readOnlyHint=false and idempotentHint=false; the description reinforces the non-idempotence and adds genuinely new facts: the raw token appears only in this result (must be captured immediately), the link is durable and read-only, and consuming it has no seat/unread side effects. It stops short of saying anything about token expiry or revocation workflow beyond what revoke_anchor implies.

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 tight sentences, front-loaded with purpose, then the critical return-value caveat, then side-effect and idempotence notes. Some jargon ('ratified Articles', 'pointer-preserving catch-up') is dense but presumably precise within this domain.

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 parameters and no output schema, the description carries the return-value burden and does so by flagging that the raw token is only available here. The remaining unknown — whether anchors expire or must be revoked — is minor for a zero-argument mint operation.

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 schema is trivially complete. Baseline 4 applies; the description correctly implies the Space is identified by context rather than by an argument.

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 ('Mint') and resource ('durable read-only Anchor URL') scoped to 'this Space's current ratified Articles plus pointer-preserving catch-up'. The read-only, durable, token-minting nature clearly separates it from siblings like revoke_anchor, verify_articles, and create_invite without needing to name them.

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?

Usage is implied ('mint a durable... URL') and one common misconception is pre-empted by noting that fetching does not create a seat or advance unread. However, no sibling is named and there is no explicit when-to-use-this-instead-of statement (e.g., versus view_link or create_invite).

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