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

Annotations already declare readOnly/idempotent/openWorld/no-destructive, so the safety profile is covered. The description adds two things beyond that: 'Keyless' (no credential needed) and, with no output schema present, a full enumeration of the returned metadata fields. No rate-limit or error behavior is mentioned, keeping it below 5.

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-loaded with the resource type, then a dense but purposeful enumeration of return fields and two usage examples. The parenthetical German terms (Ausfertigungsdatum, Fundstelle, Neufassung/Stand) each add precision rather than padding. One long sentence with minimal waste.

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 correctly carries the burden of describing return fields, and it does so thoroughly. Safety is covered by annotations, prerequisites are noted in the schema, and usage is exemplified. Minor gap: no explicit failure/not-found behavior for a keyless external lookup.

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 'law' parameter is well documented in the schema itself, including accepted abbreviations, the official-title alternative, and the 'call gesetze_search first if unsure' fallback. The description adds no parameter-level detail, so baseline 3 is correct.

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?

The description states a specific resource (amendment metadata / Stand) and enumerates exactly which fields are returned: abbreviation, title, Ausfertigungsdatum, Fundstelle, Neufassung/Stand, and entry-into-force date. This is clearly distinguishable from gesetze_provision (text) and gesetze_structure (structure), though those siblings are never named.

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?

It gives two concrete triggering questions ('what is the current Stand of the BGB', 'when was the current BDSG enacted'), which tells the agent precisely which class of query this tool serves. It stops short of stating when NOT to use it or which sibling to prefer for provision text vs. structure, so it does not reach 5.

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