network · Command reference

`qzx testInternetSpeed`

What it does

Measures HTTP latency in milliseconds and bounded download throughput in Mbps and MiB/s

Command maturity: Alpha

Available for real use and feedback while its interface and behavior can still evolve. This is the current development-checkout assessment. Every future immutable release tag preserves the exact assessment shipped by that version. Available in PyPI 0.2.2.0.9. This page documents the 0.2.2.0.9 alpha development checkout.

Behavior and built-in protections

Inspects without changing state

Direct execution for this operation

Works without invoking native programs

Uses network access for the documented task

No elevation required by design

Makes three small latency requests and one bounded download against Cloudflare's public speed-test infrastructure. The HTTPS connection exposes the normal client IP and user agent to Cloudflare; QZX sends no files, paths, commands, arguments, or machine content.

This safety classification was reviewed by OpenAI GPT-5.6 Pro against implementation digest sha256:97ee5819839b9e6175438b64a800ce803d01083e3956f71a516a33074ee74b6e on 2026-08-25.

Exact syntax

qzx testInternetSpeed [max_seconds] --json

Parameters

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Name	Type	Required	Default	Description
max_seconds	float	No	3	Maximum download measurement duration, greater than 0 and no more than 30 seconds

Input examples

qzx testInternetSpeed

Measure HTTP latency and download throughput for up to 3 seconds

qzx testInternetSpeed --max-seconds 5

Run the download measurement for up to 5 seconds

For the complete structured payload, add --json: qzx testInternetSpeed [max_seconds] --json

Representative output example

This illustrative JSON is derived from the current implementation-backed result contract. It shows what the command can return without claiming a recorded execution; values vary with inputs, host, permissions, and optional tools.

Example command: qzx testInternetSpeed --json

{
    "success": true,
    "message": "Measures HTTP latency in milliseconds and bounded download throughput in Mbps and MiB/s. In this illustrative example, the command completed successfully.",
    "meta": {
        "command": "testInternetSpeed",
        "command_maturity": {
            "stage": "alpha",
            "label": "Alpha",
            "sequence": 2,
            "public_executable": true,
            "stability": "interface_may_change",
            "summary": "Available for real use and feedback while its interface and behavior can still evolve.",
            "promotion_review_required": false,
            "assessment_scope": "development_checkout"
        },
        "duration_ms": 0,
        "schema_version": 1
    },
    "details": {
        "received": "Example value",
        "minimum_exclusive": 3,
        "maximum": 3,
        "unit": "Example value"
    },
    "download": {
        "megabits_per_second": "Example value",
        "mebibytes_per_second": "Example value",
        "bytes_downloaded": "Example value",
        "duration_seconds": 42.7,
        "duration_limit_seconds": 42.7,
        "stopped_at_duration_limit": true
    },
    "latency": 42.7,
    "warnings": [
        {
            "name": "example",
            "status": "ok"
        }
    ]
}

View the JSON result contract

{
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "required": [
        "success",
        "message",
        "meta"
    ],
    "properties": {
        "success": {
            "type": "boolean"
        },
        "message": {
            "type": "string"
        },
        "meta": {
            "type": "object",
            "required": [
                "command",
                "command_maturity",
                "duration_ms",
                "schema_version"
            ],
            "properties": {
                "command": {
                    "type": "string"
                },
                "command_maturity": {
                    "type": "object",
                    "required": [
                        "stage",
                        "label",
                        "sequence",
                        "public_executable",
                        "stability",
                        "summary",
                        "promotion_review_required",
                        "assessment_scope"
                    ],
                    "properties": {
                        "stage": {
                            "type": "string"
                        },
                        "label": {
                            "type": "string"
                        },
                        "sequence": {
                            "type": "integer"
                        },
                        "public_executable": {
                            "type": "boolean"
                        },
                        "stability": {
                            "type": "string"
                        },
                        "summary": {
                            "type": "string"
                        },
                        "promotion_review_required": {
                            "type": "boolean"
                        },
                        "assessment_scope": {
                            "type": "string"
                        },
                        "note": {
                            "type": "string"
                        },
                        "review": {
                            "type": "object",
                            "required": [
                                "reviewed_on",
                                "rationale",
                                "evidence"
                            ],
                            "properties": {
                                "reviewed_on": {
                                    "type": "string",
                                    "format": "date"
                                },
                                "rationale": {
                                    "type": "string"
                                },
                                "evidence": {
                                    "type": "array",
                                    "minItems": 1,
                                    "items": {
                                        "type": "string"
                                    }
                                },
                                "replacement": {
                                    "type": "string"
                                }
                            },
                            "additionalProperties": false
                        }
                    },
                    "additionalProperties": true
                },
                "duration_ms": {
                    "type": "number"
                },
                "schema_version": {
                    "type": "integer"
                }
            },
            "additionalProperties": true
        },
        "details": {
            "oneOf": [
                {
                    "type": "object",
                    "properties": {
                        "received": [],
                        "minimum_exclusive": {
                            "type": "integer"
                        },
                        "maximum": {
                            "type": "integer"
                        },
                        "unit": {
                            "type": "string"
                        }
                    },
                    "additionalProperties": true
                },
                {
                    "type": "object",
                    "properties": {
                        "duration_limit_seconds": [],
                        "latency_samples_completed": [],
                        "latency_samples_failed": []
                    },
                    "additionalProperties": true
                }
            ]
        },
        "download": {
            "type": "object",
            "properties": {
                "megabits_per_second": [],
                "mebibytes_per_second": [],
                "bytes_downloaded": [],
                "duration_seconds": [],
                "duration_limit_seconds": [],
                "stopped_at_duration_limit": {
                    "type": "boolean"
                }
            },
            "additionalProperties": true
        },
        "error": {
            "type": "string"
        },
        "error_code": {
            "type": "string"
        },
        "latency": [],
        "warnings": {
            "type": "array"
        }
    },
    "additionalProperties": true
}

Errors and limits

The public contract requires success=false and a descriptive message on failure. This catalog does not yet declare a command-specific error taxonomy; inspect the result and do not invent error codes.

QZX is alpha software. Optional dependencies, permissions, and host capabilities can change the result.

Evidence workflow: requires an authorized endpoint or reviewed fixture.

Evidence and provenance

Implementation: src/qzx/commands/network/test_internet_speed.py
Tests: No command-specific test file with the same module name was found; this does not prove that all coverage is absent.
Documentation channel: Development documentation 0.2.2.0.9 · main · sha256:cfba936e39931c286ca23add0ae546693db17d8b316e7cbc3891d26642d9b7e8
Availability: 0.2.2.0.9 or earlier

Keep exploring

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