execute_fetchxml

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

No annotations are provided, so the description must carry the burden of behavioral disclosure. It adds useful context about FetchXML's capabilities but does not mention read-only nature, pagination (despite nextLink), response format, or potential performance costs. It is not misleading but is incomplete.

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 description is two sentences, front-loaded with the action, and every sentence earns its place: the first states the purpose, the second explains the value proposition and usage context. No redundancy or filler.

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?

The tool's purpose and high-level usage are clear, and the schema fully documents parameters. However, the absence of details on output format or pagination (despite the nextLink parameter) makes it slightly incomplete for a complex analytical query tool. Overall, it is adequate but not exhaustive.

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 coverage is 100%, so the baseline is 3. The description adds context about the query language's features, which relates to fetchXml, but does not significantly elaborate on parameter meanings beyond what the schema provides. The schema already includes descriptions and an example.

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 'Execute a FetchXML query against Dataverse' and distinguishes the tool from OData-based query_records by highlighting FetchXML's support for aggregate functions, linked entities, and grouping. This is a specific verb+resource with clear scope.

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 explicitly says to use this for 'complex reporting or analytical queries' and notes that FetchXML supports constructs 'that cannot be expressed in OData', implying when to prefer it over alternatives. It doesn't give explicit exclusions, but the guidance is clear and context-rich.

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