pypiron
Host private packages and cache PyPI behind one ultra-fast index.
Get started · Deploy on cloud storage
- 100× faster than other self-hosted PyPI servers. 8,288 installs/s on 2 vCPU.
- Blocks 72% of malicious releases by default.
- Local disk, S3, GCS, and Azure.
- Scale without a database or coordinator. Add nodes to one bucket.
- Survives a region or cloud outage.
- Real clients. Real clouds. All 17 million PyPI files.
- Web dashboard with package pages and search.
- Health checks and Prometheus metrics built in.
Start pypiron
With uv installed,
replace your-admin-password and run:
PYPIRON_ADMIN_PASS='your-admin-password' uvx pypiron serve
pypiron is now running at http://localhost:8080. The admin username is
admin; the password is the one you chose.
Docker:
docker run -p 8080:8080 -e PYPIRON_ADMIN_PASS='your-admin-password' ghcr.io/blackthorn-interstellar/pypiron:latest
Publish and install packages · Deploy on cloud storage · Migrate from another server
Feature comparison
| Feature | pypiron | bandersnatch | pypiserver | pypicloud | devpi | proxpi | |
|---|---|---|---|---|---|---|---|
| Easy setup | ✅ | — | ✅ | — | — | ✅ | |
| Fast | ✅ | ✅ | — | — | — | — | |
| Private packages | ✅ | — | ✅ | ✅ | ✅ | — | |
| PyPI proxy | ✅ | — | — | ✅ | ✅ | ✅ | |
| Sync mirror | ✅ | ✅ | — | — | — | — | |
| Cooldown | ✅ | — | — | — | — | — | |
| Malware blocking | ✅ | — | — | — | — | — | |
| No dependency confusion | ✅ | — | — | — | ✅ | — | |
| Vulnerability audit | ✅ | — | — | — | — | — | |
| Scales, no database | ✅ | ✅ | — | — | — | — | |
| Multi-region failover | ✅ | — | — | — | ✅ | — | |
| Web GUI | ✅ | — | — | ✅ | ✅ | — | |
| Download stats | ✅ | — | — | — | — | — | |
| Storage | Disk | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| AWS S3 | ✅ | ✅ | — | ✅ | — | — | |
| GCS | ✅ | — | — | ✅ | — | — | |
| Azure Blob | ✅ | — | — | ✅ | — | — | |
Security
- Blocks known PyPI malware. OSV blocking plus a release cooldown.
- Private names stay private. They never fall through to public PyPI.
- Control which public packages install. Set one approval list for every client.
- Air-gapped deployments. Serve approved packages without internet access.
- Vulnerability audit. Affected public packages, ranked by downloads.
Gauntlet testing
- Eight real clients. uv, pip, poetry, pdm, pipenv, hatch, flit, and twine.
- Every PyPI file. All 17 million, checked against ground truth.
- Killed mid-write. Crash sweeps, fleet chaos, and hostile upstreams.
- Fuzzed nightly. Simulated and model-checked.
- Security-audited by frontier models. The same models that built it.
See the full testing gauntlet.
Going further
- Publish and install — private packages and the PyPI cache
- Deploy on cloud storage — S3, GCS, or Azure
- Migrate — move from pypicloud, devpi, Artifactory, or Nexus
- How pypiron works — storage, caching, access, and recovery
- Configuration — every flag and its
PYPIRON_*env var - Compare servers — benchmarks and when to choose something else
- For AI agents — decide, configure, and verify
Contributing — Humans Need Not Apply
pypiron was built by AI coding agents from Anthropic, OpenAI, SpaceXAI, and Moonshot — and that's how it stays. All development is done by AI coders, for security and consistency: human-developed code is a security risk, and we don't accept it. Humans are welcome to open issues and contribute documentation.
License
MIT — see LICENSE.
1 maintainer
Metadata
1 maintainer
Release files for pypiron 0.0.30
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| pypiron-0.0.30.tar.gz | 10.5 MB | With provenance | Details for pypiron-0.0.30.tar.gz |
Built distributions (wheels)
Total release size: 150.0 MB
Release files / pypiron-0.0.30.tar.gz
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| Tags | Source |
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Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 31, 2026.
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Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
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PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 31, 2026.
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Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 31, 2026.
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Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
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Signed by GitHub Actions, verified by PyPI on Oct 31, 2026.
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Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 31, 2026.
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Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
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Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
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Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
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Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
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Signed by GitHub Actions, verified by PyPI on Oct 31, 2026.
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Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
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PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
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Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 31, 2026.
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Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
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Signed by GitHub Actions, verified by PyPI on Oct 31, 2026.
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Provenance
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Provenance
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Transparency logRelease files / pypiron-0.0.30-py3-none-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
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Provenance
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Transparency logRelease files / pypiron-0.0.30-py3-none-macosx_11_0_arm64.whl
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|
Provenance
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Transparency logRelease files / pypiron-0.0.30-py3-none-macosx_10_12_x86_64.whl
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Transparency logSecurity for pypiron 0.0.30
Provenance
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Full provenance
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Attestation for pypiron-0.0.30.tar.gz
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Signed by GitHub Actions, verified by PyPI on Oct 31, 2026.
Transparency logA note on package security
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