Assay Python Bindings
assay-it is the Python package for the assay import namespace.
It currently provides a small, bounded surface on top of Assay core:
AssayClientfor writing JSONL trace records from PythonCoveragefor policy coverage analysis against trace/tool-call inputsExplainerfor rule-by-rule explanation of a single trace- a
pytestfixture plugin exposed asassay_client
Install
pip install assay-it
CPython 3.12, 3.13, and 3.14 on macOS x86_64/arm64 and Linux x86_64; other interpreters and platforms are not claimed.
Import path:
from assay import AssayClient, Coverage, Explainer, validate
What It Is
This package is for Python-side trace capture and lightweight policy-analysis helpers. It is useful when you want to:
- append structured trace events to a JSONL file from Python
- analyze tool-call traces against an Assay policy
- explain why a given trace matched or violated policy rules
- use a simple pytest fixture around the Python client
What It Is Not
This package is not the full Assay CLI or the full trust-compiler surface. It does not replace:
assay mcp wrapand runtime MCP enforcement- evidence bundle generation and verification workflows
- Trust Basis / Trust Card generation
- the GitHub Action or release-binary install path
Those outward-facing product surfaces live in the main Assay CLI and repository docs.
Example
from assay import AssayClient, Coverage, Explainer
client = AssayClient("traces.jsonl")
client.record_trace({"tool": "ToolA", "args": {"q": "weather"}})
coverage = Coverage("assay.yaml")
report = coverage.analyze([[{"tool": "ToolA", "args": {"q": "weather"}}]])
explainer = Explainer("assay.yaml")
details = explainer.explain([{"tool": "ToolA", "args": {"q": "weather"}}])
Repository
- Main project: https://github.com/Rul1an/assay
- Current CLI and trust-compiler docs: https://github.com/Rul1an/assay/blob/main/README.md
1 maintainer
Release files for assay-it 6.6.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Built distributions (wheels)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| assay_it-6.6.0-cp312-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl | CPython 3.12 | abi3 | Linux glibc 2.17+ x86-64 | Details |
| assay_it-6.6.0-cp312-abi3-macosx_11_0_arm64.whl | CPython 3.12 | abi3 | macOS 11.0+ ARM64 | Details |
| assay_it-6.6.0-cp312-abi3-macosx_10_12_x86_64.whl | CPython 3.12 | abi3 | macOS 10.12+ x86-64 | Details |
Total release size: 3.6 MB
Release files / assay_it-6.6.0-cp312-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
| Download URL | assay_it-6.6.0-cp312-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
|---|---|
| Size | 1.2 MB |
| Tags | CPython 3.12 Linux glibc 2.17+ x86-64 abi3 |
|
SHA-256 checksum How to use checksums |
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Transparency logRelease files / assay_it-6.6.0-cp312-abi3-macosx_11_0_arm64.whl
| Download URL | assay_it-6.6.0-cp312-abi3-macosx_11_0_arm64.whl |
|---|---|
| Size | 826.3 kB |
| Tags | CPython 3.12 abi3 macOS 11.0+ ARM64 |
|
SHA-256 checksum How to use checksums |
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Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
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Signed by GitHub Actions, verified by PyPI on Sep 18, 2026.
Transparency logRelease files / assay_it-6.6.0-cp312-abi3-macosx_10_12_x86_64.whl
| Download URL | assay_it-6.6.0-cp312-abi3-macosx_10_12_x86_64.whl |
|---|---|
| Size | 1.6 MB |
| Tags | CPython 3.12 abi3 macOS 10.12+ x86-64 |
|
SHA-256 checksum How to use checksums |
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| Upload date | |
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Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
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