jsonpath-rfc9535
RFC 9535 - JSONPath: Query Expressions for JSON in Python
Decision gist · record as of 2026-08-14
Yes, if you need RFC 9535–compliant JSONPath queries. The package is lightweight, well-licensed, has no known vulnerabilities, and supports modern Python versions. However, note the 257-day gap since last release—maintenance appears inactive, so consider this if you need active bug fixes or feature development. For standards-compliant querying of JSON data, it is a solid choice.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Low friction: pure Python wheel with only two runtime dependencies (iregexp-check and regex).
- Last commit was recent, though the project shows aging maintenance status with no activity for 257 days since the last release.
License · maintenance · safety
MIT (permissive) — MIT license permits commercial and private use with minimal restrictions—you may use, modify, and distribute the package freely provided you include the license notice.
last release 2025-11-30 (257 days) · last repo commit 2025-11-30 · 9 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 483,653 downloads/mo, #6,411 on PyPI
Alternatives
Verify before relying
pip install jsonpath-rfc9535
import jsonpath_rfc9535 as jsonpath
data = {"users": [{"name": "Sue", "score": 100}]}
for node in jsonpath.find("$.users[?@.score > 85]", data):
print(node.value)- Performance characteristics when querying very large JSON documents or complex nested structures.
- Stability and bug-fix cadence given the 257-day gap since last release despite aging status.
What it is and what it does
jsonpath-rfc9535 is a Python implementation of RFC 9535, the standardized JSONPath specification for querying JSON data. It provides a strict, standards-compliant way to extract values from nested JSON structures using path expressions similar to XPath for XML. The package exports a simple API: find() to get all matches, find_one() for the first match, and finditer() for lazy iteration. Each matched node carries its value, normalized path location, and parent reference, allowing you to both read and mutate data in place.
The implementation depends on iregexp-check and regex for expression evaluation. It supports Python 3.8 through 3.14 on both CPython and PyPy, and has been tested against the JSONPath Compliance Test Suite to ensure RFC adherence. The package is lightweight (pure Python wheel), carries no known vulnerabilities, and is distributed under the permissive MIT license.
Use it for
- Extract specific fields from deeply nested JSON API responses without manual traversal.
- Filter array elements in JSON documents using query expressions (e.g., find users with score > 85).
- Compile and reuse a JSONPath query against multiple JSON-like data structures for efficiency.
- Read and mutate JSON values in place by assigning to matched node.value properties.
- Process JSON loaded from files or YAML sources using a single, standards-compliant query language.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need RFC 9535–compliant JSONPath queries.
The package is lightweight, well-licensed, has no known vulnerabilities, and supports modern Python versions. However, note the 257-day gap since last release—maintenance appears inactive, so consider this if you need active bug fixes or feature development. For standards-compliant querying of JSON data, it is a solid choice.
Install
jsonpath-rfc9535 on PyPI
Before you install
Low friction: pure Python wheel with only two runtime dependencies (iregexp-check and regex). Last commit was recent, though the project shows aging maintenance status with no activity for 257 days since the last release.
License in practice
MIT license permits commercial and private use with minimal restrictions—you may use, modify, and distribute the package freely provided you include the license notice.
Quickstart
pip install jsonpath-rfc9535
import jsonpath_rfc9535 as jsonpath
data = {"users": [{"name": "Sue", "score": 100}]}
for node in jsonpath.find("$.users[?@.score > 85]", data):
print(node.value)Verify before relying
- Performance characteristics when querying very large JSON documents or complex nested structures.
- Stability and bug-fix cadence given the 257-day gap since last release despite aging status.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.8 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagesiregexp-checkregex |
| Maintenance | Aging 257 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 483,653 / month, #6,411 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseProgramming Language :: PythonProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Programming Language :: Python :: Implementation :: CPythonProgramming Language :: Python :: Implementation :: PyPy |
Evidence: jsonpath_rfc9535-1.0.0-py3-none-any.whl
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See also python-jsonpath · jsonpath-ng · jsonpath-rw · jsonpath-python · bc-jsonpath-ng · jsonpath · objectpath · jsonpath-rw-ext · robotframework-jsonlibrary · jq