smithy-json
JSON serialization and deserialization support for Smithy tooling.
Decision gist · record as of 2026-08-14
Yes, if you are using generated Smithy Python clients or actively developing with the Smithy Python code generation toolchain. No, if you need stable production-ready JSON handling—the pre-alpha status and unstable interfaces make this unsuitable for production systems. Install only as a transitive dependency of a generated client or as part of active Smithy development.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.12 or newer; pre-alpha interfaces subject to change without notice.
- Active maintenance with recent releases; low install friction.
- Pre-alpha status means interfaces remain unstable and the package is not recommended for production use yet.
License · maintenance · safety
Apache License 2.0 (permissive) — Apache License 2.0 (permissive) allows commercial and private use with minimal restrictions.
last release 2026-06-23 (52 days) · last repo commit 2026-08-13 · 83 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 423,382 downloads/mo, #6,773 on PyPI
Alternatives
Verify before relying
# Install
pip install smithy-json
# Import and use (typically within generated Smithy client code)
from smithy_json import SomeJsonHandler # exact API depends on generated client
# Usage is typically indirect via generated service clients- Whether this package can be used standalone or only as part of the full Smithy Python code generation workflow
- Performance characteristics or throughput limits for JSON serialization with ijson and smithy-core
- Stability timeline or roadmap for moving beyond pre-alpha status
What it is and what it does
smithy-json is a low-level JSON handling module for the Smithy Python code generation ecosystem. It provides the serialization and deserialization layer that generated service clients use to handle JSON payloads. The package is part of a larger toolchain (Smithy Python) that generates asynchronous Python service clients from Smithy service models; this module specifically handles the JSON protocol support.
The package is in early development (pre-alpha) and is not intended for production use. It depends on ijson and smithy-core to perform its work. Most developers will encounter this package indirectly as a runtime dependency of generated Smithy clients rather than using it directly in their own code.
Use it for
- Runtime dependency for generated Smithy service clients that communicate over restJson1 protocol
- Part of the Smithy Python code generation pipeline when building clients for custom Smithy-defined services
- JSON payload handling in asynchronous service client implementations generated from Smithy models
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you are using generated Smithy Python clients or actively developing with the Smithy Python code generation toolchain.
No, if you need stable production-ready JSON handling—the pre-alpha status and unstable interfaces make this unsuitable for production systems. Install only as a transitive dependency of a generated client or as part of active Smithy development.
Install
smithy-json on PyPI
Before you install
Active maintenance with recent releases; low install friction. Pre-alpha status means interfaces remain unstable and the package is not recommended for production use yet.
Requires Python 3.12 or newer; pre-alpha interfaces subject to change without notice.
License in practice
Apache License 2.0 (permissive) allows commercial and private use with minimal restrictions.
Quickstart
# Install
pip install smithy-json
# Import and use (typically within generated Smithy client code)
from smithy_json import SomeJsonHandler # exact API depends on generated client
# Usage is typically indirect via generated service clientsVerify before relying
- Whether this package can be used standalone or only as part of the full Smithy Python code generation workflow
- Performance characteristics or throughput limits for JSON serialization with ijson and smithy-core
- Stability timeline or roadmap for moving beyond pre-alpha status
Package facts
| License | Apache License 2.0 permissive |
| Python support | Supports the current Python release >=3.12 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagesijsonsmithy-core |
| Maintenance | Actively maintained 52 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 423,382 / month, #6,773 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 2 - Pre-AlphaIntended Audience :: DevelopersIntended Audience :: System AdministratorsLicense :: OSI Approved :: Apache Software LicenseNatural Language :: EnglishOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: Free Threading :: 2 - BetaProgramming Language :: Python :: Implementation :: CPythonTopic :: Software Development :: Libraries |
Evidence: smithy_json-0.2.3-py3-none-any.whl
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