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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is fully covered; "Rein lesend" largely restates that. The description adds no operational context such as auth requirements, pagination, or what happens when no allowlist exists, so it stays at the baseline for an annotated read 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?

The operational content is front-loaded and every clause carries information (action, scope, read-only nature, sibling routing). The trailing keyword line ("EN: allowlist, permission, whitelist, code") is retrieval-oriented padding rather than task guidance, slightly diluting an otherwise tight description.

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 single-parameter read tool with no output schema, the description covers the scope, the read-only nature, and where the related mutation tools live. It does not describe the returned entry format or ordering, a minor gap for a listing tool whose single parameter is already fully documented.

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% and the schema itself explains that an empty list means anyone may redeem the code. The description adds nothing about code_id format or lookup beyond what the schema already provides, so the 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: reading the e-mail allowlist of an invitation code, and clarifies what the list contains (which addresses/patterns are permitted). It also names the three sibling tools that handle the mutation/upload cases, so an agent can distinguish it without opening another schema.

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?

Explicitly says to use it as the current state before making changes, and routes the alternative operations to add_code_allowlist_entry, delete_code_allowlist_entry, and upload_code_allowlist. There is no explicit when-not-to-use statement, but the routing is clear enough to select correctly.

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