📦 Speedkit

Python SDK for network speed testing

Measures download, upload, and latency with the official Ookla Speedtest CLI and falls back to LibreSpeed when Speedtest is blocked or unavailable.

Features

• Zero setup — Ookla Speedtest first, LibreSpeed when it is blocked or fails.
• Automatic binaries — downloaded and cached for your OS on first run.
• Nearby servers — the lowest-latency server is picked automatically.
• Self-recovery — failed attempts are retried, broken servers excluded.
• Uniform results — same fields and units whichever provider ran; client info from geo-IP.

Installation

pip install speedkit

Usage

from speedkit import Speedkit

kit = Speedkit()
result = kit.run()

print(f"download: {result.download / 1_000_000:.1f} Mbit/s")
print(f"upload:   {result.upload / 1_000_000:.1f} Mbit/s")
print(f"ping:     {result.ping:.1f} ms")

data = result.to_dict()  # plain JSON-serializable dict

Or from the command line:

speedkit                  # auto: Ookla, then LibreSpeed
speedkit -p librespeed    # pin one provider
speedkit -t 180           # time budget per provider in seconds
speedkit -a 1             # disable retries
speedkit --no-geoip       # no third-party geo-IP request

Speedkit() needs no configuration; everything it accepts:

kit = Speedkit(
    provider="auto",   # "auto" | "ookla" | "librespeed" — a pinned provider never falls back
    timeout=120,       # time budget per provider in seconds, covering all attempts
    attempts=2,        # measurement attempts within the budget; 1 disables retries
    lookup_geoip=True, # resolve client info from a geo-IP service; False makes no such request
    cache_dir=None,    # where CLI binaries are cached; None = user cache directory
)

Result format

SpeedtestResult.to_dict() returns download/upload in bits per second and ping in milliseconds:

{
  "client": {
    "ip": "203.0.113.7",
    "isp": "Example ISP",
    "country": "ZZ",
    "city": "Springfield"
  },
  "server": {
    "name": "Springfield",
    "country": "Freedonia",
    "sponsor": "Example Sponsor",
    "id": "1234",
    "host": "speedtest.example.net:8080",
    "latency": 0.681
  },
  "provider": "ookla",
  "download": 293111520.0,
  "upload": 292265640.0,
  "ping": 0.681,
  "timestamp": "2026-07-19T15:22:48Z",
  "bytes_sent": 418465064,
  "bytes_received": 426981996
}

• client — from a geo-IP service, identical whichever provider measured.
• server — the test server that provider picked; unreported fields stay at "" / 0.0.
• provider — which measurer produced the result.

Geo-IP lookup

Client details come from the first service that answers: ipinfo.io → ipwho.is.

• The lookup takes a fraction of a second.
• If every service is unreachable, the measurement is still returned — with whatever client info the CLI reported.

This sends your IP address to the geo-IP service that answers.

Pass lookup_geoip=False (or --no-geoip) to skip it entirely. Nothing is then sent to a third party, and client keeps what the measuring CLI itself reported — ip and isp from Ookla, plus country from LibreSpeed. Fields neither reports, city above all, stay at "", so client is no longer identical across providers.

Binaries

Provider	Version	Platforms
Ookla Speedtest CLI	1.2.0	Linux x86_64/aarch64, macOS
librespeed-cli	1.0.13	Linux x86_64/aarch64, macOS

Binaries are downloaded on first use and cached per platform:

• Linux — ~/.cache/speedkit
• macOS — ~/Library/Caches/speedkit

Every archive is checked against a SHA-256 digest pinned in speedkit/binaries.py before anything is extracted or made executable. A release asset that changed after it was pinned raises BinaryDownloadError instead of running. All network access is HTTPS with certificate verification; plain HTTP, and any redirect leaving TLS, is refused.

Set SPEEDKIT_OOKLA_BINARY / SPEEDKIT_LIBRESPEED_BINARY to a path of a preinstalled binary to skip downloading entirely — useful for offline machines and locked-down networks. The path is executed as given and bypasses the checksum, so it is on you to trust it.

To pre-download the binaries at image build time (Docker, CI):

python -c "from speedkit.binaries import ookla_binary, librespeed_binary; ookla_binary(); librespeed_binary()"

Running the Ookla provider passes --accept-license --accept-gdpr, which implies acceptance of the Ookla EULA and privacy terms.

Errors

Every error derives from SpeedkitError and carries an actionable hint:

from speedkit import Speedkit, SpeedkitError

try:
    result = Speedkit().run()
except SpeedkitError as error:
    print(error)  # cause, and a hint on how to fix it

UnsupportedPlatformError — no prebuilt binary for this OS/arch; BinaryDownloadError — the binary could not be fetched; SpeedtestError — the measurement itself failed.

License

This repository is distributed under the MIT License.