chromium_parse_downloads_tool

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

With no annotations, the description carries the burden. It discloses that the tool reads from both the History database and shared_proto_db when present, which is helpful behavioral context. 'Parse' implies read-only behavior, and no contradictory annotations exist.

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 plus a path example. It is front-loaded with the core purpose, and every phrase earns its place without redundancy.

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 description adequately covers the tool's purpose and key data sources, and an output schema exists to explain return values. It does not mention prerequisites like browser closed or error scenarios, but for a parse tool this is sufficient.

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 baseline is 3. The description provides an example profile path, which adds context to the profile_path parameter, but does not elaborate on limit or URL filters beyond what the schema already describes.

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 states 'Parse Chromium download records from a browser profile' with a clear verb and resource. It names the specific record type (downloads) and differentiates from sibling tools like chromium_parse_history_tool or chromium_parse_bookmarks_tool.

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 provides useful context like a typical profile path and mentions data sources (History database, shared_proto_db), but does not explicitly state when to use this tool over alternatives or when not to use it. Usage is implied rather than explicitly guided.

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