svix-ksuid
A pure-Python KSUID implementation
Decision gist · record as of 2026-08-14
Yes. The package is actively maintained, has no known vulnerabilities, uses a permissive MIT license, and installs with minimal friction. Install it if you need sortable IDs with embedded timestamps; skip it if standard UUIDs or database-generated sequences already fit your use case.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later.
- Low install friction with a single pure-Python dependency.
- The package is actively maintained with recent commits, and requires Python 3.10 or later.
License · maintenance · safety
MIT (permissive) — MIT license permits unrestricted use, modification, and distribution in both open-source and commercial projects.
last release 2026-03-14 (153 days) · last repo commit 2026-08-11 · 161 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 269,905 downloads/mo, #8,247 on PyPI
Alternatives
Verify before relying
pip install svix-ksuid
from ksuid import Ksuid
ksuid = Ksuid()
print(f"Base62: {ksuid}")
print(f"Timestamp: {ksuid.timestamp}")
print(f"Datetime: {ksuid.datetime}")- Whether the 4ms accuracy mode (KsuidMs) is suitable for your specific timing requirements compared to the 1-second default.
- Performance characteristics when generating or parsing large volumes of KSUIDs in production workloads.
What it is and what it does
Svix-KSUID is a pure-Python implementation of K-sorted unique identifiers, a variant of UUIDs that embed a timestamp component. Unlike standard UUIDs, KSUIDs can be approximately sorted by their creation time without additional metadata. The library provides two modes: standard KSUIDs with 1-second timestamp accuracy, and KsuidMs for 4-millisecond accuracy by trading one byte of random payload. Both modes produce valid, compatible KSUIDs that can be serialized to base62 strings, raw bytes, or reconstructed from either format.
The package handles the full lifecycle of KSUID operations: generation with optional datetime specification, parsing from base62 strings or bytes, timestamp extraction, and comparison operations. It's designed as a lightweight utility for systems that need sortable identifiers with embedded temporal information, commonly used in event logging, database record identification, and distributed systems where ordering by creation time is valuable.
Use it for
- Generate sortable event IDs in logging systems where chronological ordering is needed without separate timestamps.
- Create database record identifiers that preserve insertion order for efficient range queries and pagination.
- Build distributed system identifiers where multiple services generate IDs independently but need global ordering.
- Replace UUIDs in APIs where clients need to infer approximate creation order from the ID alone.
- Store webhook event identifiers that can be sorted by delivery time without additional metadata lookups.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package is actively maintained, has no known vulnerabilities, uses a permissive MIT license, and installs with minimal friction. Install it if you need sortable IDs with embedded timestamps; skip it if standard UUIDs or database-generated sequences already fit your use case.
Install
svix-ksuid on PyPI
Before you install
Low install friction with a single pure-Python dependency. The package is actively maintained with recent commits, and requires Python 3.10 or later.
Requires Python 3.10 or later.
License in practice
MIT license permits unrestricted use, modification, and distribution in both open-source and commercial projects.
Quickstart
pip install svix-ksuid
from ksuid import Ksuid
ksuid = Ksuid()
print(f"Base62: {ksuid}")
print(f"Timestamp: {ksuid.timestamp}")
print(f"Datetime: {ksuid.datetime}")Verify before relying
- Whether the 4ms accuracy mode (KsuidMs) is suitable for your specific timing requirements compared to the 1-second default.
- Performance characteristics when generating or parsing large volumes of KSUIDs in production workloads.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagepython-baseconv |
| Maintenance | Actively maintained 153 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 269,905 / month, #8,247 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
Evidence: svix_ksuid-0.7.0-py3-none-any.whl
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See also ksuid · svix · cyksuid · pksuid · timeflake · ulid · ulid-py · uuid-v7 · typeid-python · uuid7-standard