sigstore-protobuf-specs
A library for serializing and deserializing Sigstore messages
Decision gist · record as of 2026-08-14
Yes, if you are building or integrating with Sigstore tooling. This is a foundational dependency for any Python application that needs to work with Sigstore's message formats. Install friction is minimal and maintenance is active. No security vulnerabilities are known. If you are not working with Sigstore directly, you likely do not need this package.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.8 or later; depends on betterproto and pydantic at runtime.
- Low install friction with only two runtime dependencies (betterproto and pydantic).
- Actively maintained with a recent release on 2026-04-06 and last commit on 2026-08-10.
License · maintenance · safety
permissive license (permissive) — Licensed under Apache Software License (permissive), allowing commercial and private use without restriction.
last release 2026-04-06 (130 days) · last repo commit 2026-08-10 · 36 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 104,175 downloads/mo, #12,764 on PyPI
Alternatives
Verify before relying
pip install sigstore-protobuf-specs
from sigstore_protobuf_specs.gen.python import sigstore_common
# Use protobuf message definitions for Sigstore workflows- Whether the package is intended for end-user applications or primarily for Sigstore ecosystem tooling
- Performance characteristics when serializing/deserializing large message volumes
- Stability guarantees for the protobuf schema across minor version updates
What it is and what it does
This package contains compiled Python protobuf message definitions for Sigstore, the open-source project for cryptographic artifact signing and verification. It provides the serialization and deserialization code needed to work with Sigstore's standard message formats, including support for cryptographic keys, signatures, and verification material. The package is built from `.proto` specifications and includes generated Python stubs using betterproto and pydantic for validation.
It is primarily a dependency for tools and libraries that integrate with the Sigstore ecosystem—such as clients that need to communicate with Sigstore services (Fulcio, Rekor) or applications that verify signed artifacts. The package supports modern Python versions (3.7 through 3.11) and is actively maintained by the Sigstore community, with ongoing work to support new post-quantum cryptography algorithms.
Use it for
- Building Sigstore client libraries that need to serialize and deserialize signing requests and verification responses.
- Integrating artifact signing workflows into CI/CD pipelines that use Sigstore for supply-chain security.
- Implementing custom verification logic for Sigstore-signed artifacts in Python applications.
- Developing tools that interact with Sigstore services like Rekor (transparency log) or Fulcio (certificate authority).
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you are building or integrating with Sigstore tooling.
This is a foundational dependency for any Python application that needs to work with Sigstore's message formats. Install friction is minimal and maintenance is active. No security vulnerabilities are known. If you are not working with Sigstore directly, you likely do not need this package.
Install
sigstore-protobuf-specs on PyPI
Before you install
Low install friction with only two runtime dependencies (betterproto and pydantic). Actively maintained with a recent release on 2026-04-06 and last commit on 2026-08-10.
Requires Python 3.8 or later; depends on betterproto and pydantic at runtime.
License in practice
Licensed under Apache Software License (permissive), allowing commercial and private use without restriction.
Quickstart
pip install sigstore-protobuf-specs
from sigstore_protobuf_specs.gen.python import sigstore_common
# Use protobuf message definitions for Sigstore workflowsVerify before relying
- Whether the package is intended for end-user applications or primarily for Sigstore ecosystem tooling
- Performance characteristics when serializing/deserializing large message volumes
- Stability guarantees for the protobuf schema across minor version updates
Package facts
| License | permissive license permissive |
| Python support | Supports the current Python release >=3.8 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagesbetterprotopydantic |
| Maintenance | Actively maintained 130 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 104,175 / month, #12,764 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaIntended Audience :: DevelopersLicense :: OSI Approved :: Apache Software LicenseProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: SecurityTopic :: Security :: Cryptography |
Evidence: sigstore_protobuf_specs-0.5.1-py3-none-any.whl
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Install only if maintaining existing code that already depends on it, and plan a migration.
See also sigstore · sigstore-models · opensearch-protobufs · sentry-protos · dbt-protos · hatch-protobuf · proto-plus · substrait-protobuf · protobuf-py · sigstore-rekor-types