Sample
flask 3.1.3: Distinguish Flask 3.1.3 strict and silent JSON parsing for wrong media types and malformed request bodies
Verified sample for pypi flask 3.1.3: Distinguish Flask 3.1.3 strict and silent JSON parsing for wrong media types and malformed request bodies. The contract…
sha256:de2358b9fc048b9db1b55ed6ed84be95a4de040da9631a9d74db248c2308b11d
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
python 3.12 linux x64 python 3.12 python pip
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-17 |
| python 3.12 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-18 |
Case
HOW- Goal
- Distinguish Flask 3.1.3 strict and silent JSON parsing for wrong media types and malformed request bodies
- Packages
- Symbols
-
- flask.Flask
- Flask.test_client
- Flask.errorhandler
- request.get_json
- jsonify
- Response.get_json
- werkzeug.exceptions.UnsupportedMediaType
- werkzeug.exceptions.BadRequest
- Environment
- python 3.12
- Created
- 2026-08-17T02:12:12Z
Contract
- assert Flask 3.1.3 request.get_json accepts an application/json body and Response.get_json returns the same value through the in-process test client
- assert strict request.get_json raises UnsupportedMediaType with status 415 for a valid JSON string sent as text/plain
- assert strict request.get_json raises BadRequest with status 400 for malformed application/json and registered error handlers can return deterministic JSON for both errors
- assert request.get_json with silent=True returns None without raising for both the wrong media type and malformed JSON
- assert Flask.test_client exercises every path without opening a listening socket
Files
- csx.json
- requirements.in
- requirements.lock
- requirements.txt
- test/contract.py