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devinwang

cloak-browser-mcp

by devinwang

cloak_request_signal_inspect

Inspect a URL's request signals by opening it in a background tab, capturing TLS protocol, issuer, headers, and response status for security analysis.

Instructions

Open the target URL in an ephemeral background tab and capture per-request connection signals: response status, security details (TLS protocol/issuer), response headers, and request headers (Accept-Language, User-Agent, Sec-CH-UA-*).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlYesTarget URL whose connection signals (TLS, headers) we capture.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.0

TDQS

A3.5/5.0
Behavior3/5

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

With no annotations present, the description carries the full behavioral burden, and it does add useful context: the URL loads in an ephemeral background tab, implying an isolated, non-disruptive read. However it omits key traits such as whether the tab is torn down, whether page scripts execute, or whether any state is mutated, which matters for a tool that navigates.

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?

A single sentence that front-loads the action ('Open the target URL in an ephemeral background tab') and then enumerates the captured outputs. No filler or restatement of the name.

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?

No output schema exists, so the description must describe return values, and it does so thoroughly by listing status, TLS details, and both header sets. What is missing is the ephemeral tab's lifecycle and whether the operation has any side effects, but for a single-parameter read this is close to complete.

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

Parameters4/5

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

Schema coverage is 100% for the single url parameter and the schema already says 'connection signals (TLS, headers) we capture'. The description complements this by naming the specific request headers inspected (Accept-Language, User-Agent, Sec-CH-UA-*), adding meaning beyond the schema.

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

Purpose4/5

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

The description states a specific verb (open) plus the resource (target URL) and enumerates exactly what is captured (status, TLS, response/request headers), so the action is unambiguous. It does not differentiate itself from adjacent cloak_* diagnostic siblings such as cloak_detection_test or cloak_stealth_audit, which an agent could plausibly confuse it with.

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

Usage Guidelines2/5

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

There is no statement of when to reach for this tool versus the sibling diagnostics (cloak_detection_test, cloak_stealth_audit) that also open a page and gather signals. Usage is only implied by the phrase 'capture per-request connection signals', leaving selection to inference.

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