d3p_check_compatibility

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

With no annotations, the description must disclose behavioral traits. It indicates a read-only check operation (no side effects), but does not mention what happens if parameters are missing or invalid, nor does it specify any prerequisites or rate limits. The 'check' verb implies non-destructiveness, but more detail could improve certainty.

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?

Two concise sentences that clearly state purpose and parameter details. No redundant information; every sentence earns its place.

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?

Given the presence of an output schema (not shown), description does not need to detail return values. It covers the tool's function and parameter structure. However, it could mention the expected output type (e.g., boolean) for extra clarity. Overall adequate for a simple check tool.

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?

The input schema (only 'params' string) is generic with 0% schema coverage. The description compensates by specifying the JSON structure with 'source_service' and 'target_service' as required fields, adding critical meaning beyond the bare schema. However, it does not document allowable values or formats for these fields.

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 clearly states the tool's function: checking compatibility between two d3p services for chaining. It uses specific verbs ('Check if... can be chained') and identifies the resource (d3p services). It distinguishes from siblings like d3p_validate-schema by focusing on cross-service compatibility.

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 implies usage when chaining services, but it does not explicitly state when to use this tool versus alternatives like d3p_validate-schema or d3p_protocol_info. No when-not-to-use instructions are provided.

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