navigate_history

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

The only behavioral note is 'UIDs become stale', which warns that after navigation, element identifiers will be invalid. This is valuable beyond what annotations would provide (none given). However, no other traits (e.g., if it blocks, requires user interaction) are disclosed.

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 sentences with zero waste: the first defines purpose, the second adds a key behavioral side effect. Front-loaded and efficient.

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?

Adequate for a simple tool: covers purpose and a notable side effect. However, no mention of return values or success/failure indicators, and no guidance on when to use over siblings. Gaps exist but not severe.

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% with the enum values 'back' and 'forward' already described. The tool description adds no further meaning to the parameter beyond repeating the schema. Baseline 3 is appropriate.

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 'Navigate history back/forward', specifying the action (navigate) and resource (history). It distinguishes from sibling tools like navigate_page (which loads a new URL) and click_by_uid (which interacts with page elements).

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?

No guidance on when to use this tool versus alternatives like navigate_page or select_page. The description lacks context for when back/forward navigation is appropriate or when UIDs might become stale.

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