pulse_browser_observe

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

With no annotations, the description carries the full burden. It usefully discloses three side effects — observing the page, writing DOM controls into a spatial grid, and storing the screen — but says nothing about permissions, whether prior grid state is overwritten, or how the stored screen is keyed.

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?

A single front-loaded sentence with no filler. It is dense rather than wasteful, though packing three distinct actions into one clause slightly blurs the emphasis.

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?

No output schema and no annotations, so the description should do more. It partially compensates by describing the observable result (a mapped spatial grid plus a stored screen), but leaves the undocumented parameters and any environment prerequisites as gaps.

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?

Three parameters (port, app_id, target_url) have 0% schema description coverage, and the description explains none of them. 'Local Chromium page' only faintly implies what port and target_url are for, and app_id is entirely unexplained.

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 uses concrete verbs (observe, map, store) and a specific resource (the active local Chromium page, visible DOM controls), so the agent knows exactly what the tool does. It does not, however, distinguish itself from siblings like pulse_desktop_observe or pulse_map_get, which sound similar at a glance.

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 call this instead of pulse_desktop_observe, pulse_browser_targets, or pulse_map_get. The agent must infer that observation precedes clicking/filling, and no prerequisites (e.g., Chromium running, port chosen) are stated.

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