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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered; the description adds pagination semantics ('page: Ergebnisseite ab 0; total_pages sagt, wie viele es gibt') and the shape of each result mode, which is genuine behavioral context beyond the annotations. It stops short of stating anything about completeness or freshness of Bing's backlink index.

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?

Four dense lines, no filler, with the two-mode behavior front-loaded ahead of the parameter notes. Slightly telegraphic phrasing costs a little readability, but nothing is redundant.

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?

A read-only, three-parameter list tool with an output schema: the description covers mode selection, pagination, and workspace resolution, which is everything needed to invoke it correctly. Return-field names are described too, which is bonus rather than necessity given the output schema.

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 0%, so the description carries the full burden and largely meets it: `url` is framed as a mode switch, `page` is defined as a 0-based result page, and `workspace` is defined as a client slug that becomes optional when only one workspace exists — the last of which is nowhere in the schema. The only gap is that `url`'s accepted format (full URL vs path) is not specified.

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+resource ('Eingehende Links laut Bing') and immediately splits behavior into two modes keyed on `url`. An agent understands exactly what data comes back. It does not, however, distinguish itself from backlink siblings such as dfs_backlinks_list or dfs_backlink_summary, so the agent must infer the Bing-vs-DataForSEO source distinction from the name alone.

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?

The description effectively explains which mode applies when `url` is set vs unset, which is real usage guidance for the parameter. But it gives no guidance on when to prefer this tool over competing backlink tools in the sibling list, and no prerequisites are stated. Usage is implied rather than compared against alternatives.

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