Open EasyEDA Pro Document

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

Annotations already declare readOnlyHint=false, idempotentHint=true and destructiveHint=false, so the safety profile is covered. The description adds valuable side-effect context beyond that: it changes input focus and the canvas viewport, and it returns readback confirmation of the focus transition. It does not say what happens when the expected target identity mismatches, which is the main remaining behavioral gap.

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 compact sentences with the action front-loaded and no filler. The second sentence ('Provides readback confirmation and reports focus transition') is slightly redundant with the first's viewport/focus statement, but it is not wasteful enough to hurt.

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?

For a 6-parameter tool with a nested identity object and no output schema, the description covers the action and its visible side effects but not the interaction between parameters or the mismatch/failure behavior. An agent still has to infer whether to pass documentId, tabId, or a full target object.

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 83%, so the schema already documents tabId, documentId, activate, timeoutMs and splitScreenId, which sets a baseline of 3. The description adds nothing about the parameters and notably does not explain the nested 'target' object, how it differs from top-level documentId/tabId, or how identity matching is used.

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 names a concrete verb and resource ('Opens a document or activates an open tab in EasyEDA Pro') and covers both modes of the operation, so the agent can distinguish it from list/navigation siblings. It stops short of naming a specific sibling (e.g., easyeda_list_documents as the source of a documentId) that would remove remaining ambiguity.

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?

Usage is implied by 'opens a document or activates an open tab', which suggests the two situations the tool covers. However, there is no explicit guidance on when to prefer this over easyeda_render_document_view or easyeda_navigate_component, and no mention of prerequisites such as first resolving a documentId via easyeda_list_documents.

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