Vigia

PyPI · pypi:simplejson

simplejson active

Simple, fast, extensible JSON encoder/decoder for Python

The latest stable version of simplejson is 4.3.0, published on 2026-11-10. Verified by Vigia on 2026-11-13.

Latest stable version4.3.0
Published2026-11-10 20:54:25 UTC
Installpip install --upgrade simplejson
Requirespython !=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,!=3.7.*,!=3.8.*,>=2.7
LicenseMIT OR AFL-2.1
Advisories on latest versionnone known
Last verified2026-11-13 16:14:21 UTC
Sourcespypi.org

Is your project affected?

Check my whole requirements.txtGet notified of new versions (Atom)Facts for my AGENTS.md

Free, no signup. Paste your manifest and see what is outdated, deprecated or vulnerable.

Maintenance

Activityactive
Last stable release2026-11-10 20:54:25 UTC · 2 days ago
Stable releases in the last 12 months7
Published versions115

Heuristic based only on release dates; it does not measure issue or security response times.

Version history

VersionPublished
4.3.02026-11-10 20:54:25 UTC
4.2.02026-10-03 03:31:25 UTC
4.1.22026-08-27 00:36:23 UTC
4.1.12026-04-24 19:22:20 UTC
4.1.02026-04-22 20:25:08 UTC
4.0.12026-04-18 22:44:04 UTC
4.0.02026-04-18 19:08:25 UTC
3.20.22025-09-26 16:27:17 UTC
3.20.12025-02-15 05:15:17 UTC
3.19.32024-08-14 15:15:41 UTC
3.19.22023-10-06 08:33:05 UTC
3.19.12023-04-06 20:36:20 UTC
3.18.42023-03-14 21:26:55 UTC
3.18.32023-02-05 19:19:14 UTC
3.18.22023-02-05 01:05:40 UTC
3.18.12023-01-03 17:31:56 UTC
3.18.02022-11-14 23:55:50 UTC
3.17.62021-11-16 16:36:28 UTC
3.17.52021-08-24 04:57:02 UTC
3.17.42021-08-20 04:26:18 UTC

Showing the 20 most recent of 114 versions. JSON

Version compatibility

Newest stable version that declares support for each runtime version (from the requirements published with each version).

RuntimeNewest compatible version
python 3.84.1.2
python 3.94.3.0
python 3.104.3.0
python 3.114.3.0
python 3.124.3.0
python 3.134.3.0

Give your AI agent these facts

Vigia is a free MCP server: your coding agent checks versions, breaking changes and vulnerabilities before it writes code. No signup, no API key.

claude mcp add --transport http vigia https://vigia.coredls.cloud/mcp

Add to CursorAdd to VS Code★ Star on GitHub

Any other MCP client
{ "mcpServers": { "vigia": { "url": "https://vigia.coredls.cloud/mcp" } } }

Agent skill (SKILL.md): tells the agent when to use Vigia · GitHub Action for pull requests

Frequently asked questions

What is the latest version of simplejson?

The latest stable version of simplejson is 4.3.0, published on 2026-11-10. Verified by Vigia on 2026-11-13.

How do I install the latest version of simplejson?

Run pip install --upgrade simplejson. The latest stable version is 4.3.0 (verified 2026-11-13).

Is simplejson deprecated?

No. simplejson is not marked as deprecated in the registry.

Which Python version does simplejson require?

simplejson 4.3.0 declares this requirement: python !=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,!=3.7.*,!=3.8.*,>=2.7.

Does simplejson 4.3.0 have known vulnerabilities?

No known advisories affect simplejson 4.3.0 according to the data Vigia checks.

Is simplejson still maintained?

simplejson published 7 stable releases in the last 12 months; the most recent was 2 days ago. Activity: active.

Observed changes

Related packages

Badges for your README

Show the latest version, maintenance status and deprecation status of this package. Copy the Markdown:

[![version](https://vigia.coredls.cloud/badge/pypi/simplejson/version.svg)](https://vigia.coredls.cloud/pypi/simplejson)
[![maintained](https://vigia.coredls.cloud/badge/pypi/simplejson/maintained.svg)](https://vigia.coredls.cloud/pypi/simplejson)
[![status](https://vigia.coredls.cloud/badge/pypi/simplejson/status.svg)](https://vigia.coredls.cloud/pypi/simplejson)

For agents

GET https://vigia.coredls.cloud/v1/packages/pypi/simplejson
GET https://vigia.coredls.cloud/v1/packages/pypi/simplejson/versions/{version}