devonthink

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It states the four actions but does not describe side effects, permission requirements, authentication needs, or what happens on failure. For a tool that can read/similar/search documents in a database, it does not disclose behaviors like rate limits, database access requirements, or return value shape.

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 compact and front-loaded, stating the core purpose in one sentence and enumerating actions in a clear, scannable format. The action list is useful and efficient even though it overlaps the schema enum. No wasted words, though the action enumeration could arguably be trimmed given the schema already declares the enum.

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?

This is a multi-action tool with 6 parameters, no output schema, and no annotations. The description is thin: it names actions but does not explain return shape, error behavior, or the meaning of partial parameters per action (e.g., which params apply to 'search' vs 'read'). The schema covers parameter types but the description does not guide an agent through action-specific usage, leaving significant interpretive burden.

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 100%, so all 6 parameters are individually documented in the schema. The description does not repeat parameter details but also adds nothing beyond what the schema already states. With full coverage, baseline 3 is appropriate; the actions list overlaps the enum description without adding new value.

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 'Search and retrieve documents from DEVONthink' gives a clear verb+resource (search/retrieve + DEVONthink). It lists four distinct actions that help define scope, but the actions are covered by the input-schema enum for 'action', so the description somewhat duplicates what the schema already provides. Purpose is clear but not strongly differentiated from the many sibling gc_* tools beyond naming the resource.

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?

There is no guidance on when to use devonthink vs alternatives, nor when-not-to-use. It does imply usage through the action list (search, similar, read, databases), which gives partial context, but there are no exclusions, prerequisites, or sibling comparisons. The description names the tool's action taxonomy but never instructs an agent when each action is appropriate.

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