Skip to main content
Glama
Sign In
PhantomHand

PhantomHand

by SilenceEchoLab
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Local

browser_fast_forward

Fast-forward virtual time to skip countdowns or animations, advancing the page without real-world waiting.

Instructions

Instantly fast-forward virtual time (e.g., to skip countdowns or animations) without real-world waiting.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "ms": "<ms>"
    },
    "name": "browser_fast_forward"
  }
}

Input Schema

NameRequiredDescriptionDefault
msYesMilliseconds to advance

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.1

TDQS

A4/5.0
Behavior3/5

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

No annotations provided, so description carries full burden. It explains instant virtual advancement but doesn't disclose potential side effects or prerequisites.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

One sentence, no wasted words, front-loaded with key action and examples.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple one-parameter tool with no output schema, the description adequately conveys purpose and usage, though it lacks mention of return values.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema covers 100% of parameters with a clear description for 'ms'. Description adds no extra meaning beyond schema, so baseline score is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states the tool fast-forwards virtual time with examples (countdowns, animations), distinguishing it from real-time waiting tools like browser_wait.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides explicit use cases (skip countdowns, animations) and implicitly contrasts with real waiting, but lacks explicit when-not-to-use or alternatives.

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

Deploy Server

Other Tools