wpf_evaluate_binding

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

With no annotations provided, the description carries the full burden for behavioral transparency. It details what the tool reports: value source, effective value, animation/coercion status, and for bindings, a hop-by-hop path resolution. It does not mention side effects, permissions, or error handling, but the disclosed behavior is sufficient for an agent to understand the tool's operation.

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 several sentences but each sentence adds value: first states purpose, then details output, then differentiates from sibling. It is well-structured and front-loaded. Could be slightly more concise, but no wasted words.

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 no annotations, no output schema, and two parameters with 0% schema coverage, the description provides substantial context about what the tool returns and its diagnostic role. It does not cover return format or error scenarios, but the level of detail is adequate for a diagnostic tool in a rich sibling set.

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% (no descriptions in the input schema), so the description must add meaning. While the tool name and description imply that 'element_handle' identifies the UI element and 'property_name' the property, it does not explicitly describe their types, formats, or constraints. The context helps, but explicit parameter explanations would improve clarity.

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 purpose: explain why a property has its current value. It specifies the resource (a property) and the action (evaluate binding). It directly distinguishes itself from sibling tool 'wpf_get_bindings' by noting that it evaluates one binding while the other lists them.

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 explicitly tells when to use this tool: it is the 'go-to tool for why is X empty/wrong/disabled?' and states it complements 'wpf_get_bindings' by evaluating a specific binding. It provides clear context on when to invoke it versus alternatives.

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