utilix-sdk

100+ developer utility tools for Python — runs entirely locally, no API key required.

Installation

pip install utilix-sdk

Requires Python 3.11 or later.

Quick Start

Encoding

from utilix.tools.encoding import encode_base64, decode_base64

result = encode_base64("hello world")
# {"ok": True, "output": "aGVsbG8gd29ybGQ=", "inputBytes": 11, "outputChars": 16}

result = decode_base64("aGVsbG8gd29ybGQ=")
# {"ok": True, "output": "hello world", "outputBytes": 11}

Hashing

from utilix.tools.hashing import hash_all, hash_one

result = hash_all("my-secret")
# Returns MD5, SHA-1, SHA-256, SHA-384, SHA-512 digests in one call

sha256 = hash_one("SHA-256", "my-secret")
# {"ok": True, "algorithm": "SHA-256", "hex": "...", "bits": 256}

JSON Tools

from utilix.tools.json_tools import format_json, minify_json, yaml_to_json

pretty = format_json('{"name":"utilix","version":"0.1.0"}', indent=2)
# {"status": "valid", "output": "{\n  \"name\": \"utilix\", ...", ...}

minified = minify_json('{\n  "a": 1,\n  "b": 2\n}')
# {"ok": True, "output": "{\"a\":1,\"b\":2}", ...}

as_json = yaml_to_json("name: utilix\nversion: 0.1.0")
# {"ok": True, "output": "{\"name\": \"utilix\", \"version\": \"0.1.0\"}"}

Color

from utilix.tools.color import hex_to_rgb, check_contrast, generate_palette

rgb = hex_to_rgb("#3B82F6")
# {"ok": True, "r": 59, "g": 130, "b": 246}

contrast = check_contrast("#FFFFFF", "#3B82F6")
# {"ratio": 3.94, "aa_normal": False, "aa_large": True, "aaa_normal": False, ...}

palette = generate_palette("#3B82F6", scheme="complementary")
# Returns list of hex colors forming a complementary palette

Media

from utilix.tools.media import compress_image, convert_image

with open("photo.jpg", "rb") as f:
    image_bytes = f.read()

result = compress_image(image_bytes, quality=75, format="JPEG")
# {"ok": True, "output": bytes, "original_size": 204800, "compressed_size": 61440, "ratio": 0.3}

converted = convert_image(image_bytes, target_format="WEBP")
# {"ok": True, "output": bytes, "format": "WEBP"}

CSS

from utilix.tools.css import generate_gradient, calc_specificity, minify_css

gradient = generate_gradient({
    "type": "linear",
    "angle": 135,
    "stops": [{"color": "#667eea", "position": 0}, {"color": "#764ba2", "position": 100}]
})
# "linear-gradient(135deg, #667eea 0%, #764ba2 100%)"

specificity = calc_specificity("#nav .item:hover")
# {"score": (0, 1, 1, 1), "display": "0,1,1,1", "explanation": [...]}

minified = minify_css("body {\n  margin: 0;\n  padding: 0;\n}")
# {"ok": True, "output": "body{margin:0;padding:0}", "saved_bytes": 14}

Time Tools

from utilix.tools.time_tools import from_unix, diff_dates, get_next_runs

parsed = from_unix(1735689600)
# {"ok": True, "iso": "2025-01-01T00:00:00+00:00", "relative": "6 months ago", ...}

delta = diff_dates("2024-01-01", "2024-12-31")
# {"ok": True, "days": 365, "months": 12, "human": "12 months"}

schedule = get_next_runs("0 9 * * MON-FRI", count=5)
# Next 5 weekday 9am runs as ISO strings

Network

from utilix.tools.network import ip_to_decimal, cidr_info, is_valid_ipv4

decimal = ip_to_decimal("192.168.1.1")
# {"ok": True, "output": 3232235777}

subnet = cidr_info("10.0.0.0/24")
# {"ok": True, "network": "10.0.0.0", "broadcast": "10.0.0.255",
#  "hosts": 254, "netmask": "255.255.255.0", ...}

print(is_valid_ipv4("256.0.0.1"))  # False

Modules

Surface A vs Surface B

Surface A — this package (utilix-sdk)

Everything in this package runs locally in your Python process. There are no network calls for the core utilities (DNS lookup and IP geolocation are the only exceptions, and both hit public free APIs). No account, no API key, no rate limits.

pip install utilix-sdk

Ideal for: scripts, CI pipelines, offline environments, CLIs, and any situation where you want deterministic, zero-cost utility functions.

REST API (api.utilix.tech/v1)

The same 100+ tools are also available as a hosted REST API at https://api.utilix.tech/v1. This surface requires an API key and is subject to rate limits and pricing tiers.

curl -X POST https://api.utilix.tech/v1/tools/hash \
  -H "Authorization: Bearer $UTILIX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"input": "hello world", "algorithm": "sha256"}'

• Free: 1,000 requests/day — no credit card required
• Pro: 10,000 requests/day — $9/month
• Try it live at utilix.tech/api — no signup needed for the first 10 endpoints
• Get your API key at utilix.tech/dashboard

Ideal for: polyglot teams, environments where installing Python packages is not possible, and browser-based tooling that needs a backend.

Development

# Clone the repository
git clone https://github.com/utilix-tech/utilix-sdk-python.git
cd utilix-sdk-python

# Install in editable mode with dev dependencies
pip install -e ".[dev]"

# Run the test suite
pytest

# Run with coverage
pytest --cov=utilix --cov-report=term-missing

Publishing to PyPI

Build the distribution

python -m build
# Produces dist/utilix_sdk-x.y.z.tar.gz and dist/utilix_sdk-x.y.z-py3-none-any.whl

Test on TestPyPI first

python -m twine upload --repository testpypi dist/*
# Install from TestPyPI to verify
pip install --index-url https://test.pypi.org/simple/ utilix-sdk

Publish to PyPI

python -m twine upload dist/*

GitHub Actions with OIDC trusted publisher (recommended)

Store no tokens. Configure a trusted publisher on PyPI (Settings > Publishing > Add a new publisher) and use the official PyPA action:

# .github/workflows/publish.yml
name: Publish to PyPI

on:
  push:
    tags:
      - "v*"

jobs:
  publish:
    runs-on: ubuntu-latest
    permissions:
      id-token: write  # Required for OIDC

    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        with:
          python-version: "3.11"

      - name: Build
        run: |
          pip install build
          python -m build

      - name: Publish to PyPI
        uses: pypa/gh-action-pypi-publish@release/v1
        # No api-token needed — OIDC trusted publisher handles auth

Tag a release (git tag v0.2.0 && git push --tags) and the workflow publishes automatically with no stored credentials.

License

MIT. See LICENSE for the full text.