helm-langchain
HELM governance adapter for LangChain.
What it does
Wraps LangChain tools with HELM governance:
- Every tool call is evaluated against HELM policy before execution
- Denied calls raise
HelmToolDenyError(fail-closed by default) - Receipts with SHA-256 hashes are collected for every approved execution
Quick start
from helm_langchain import HelmToolWrapper
wrapper = HelmToolWrapper(helm_url="http://localhost:8080")
governed_tools = wrapper.wrap_tools(my_tools)
# Use in a LangChain agent
agent = create_react_agent(llm, governed_tools)
Configuration
| Parameter | Default | Description |
|---|---|---|
helm_url |
http://localhost:8080 |
HELM kernel URL |
api_key |
None |
HELM API key |
fail_closed |
True |
Deny on HELM errors |
collect_receipts |
True |
Keep receipt chain |
timeout |
30.0 |
HTTP timeout seconds |
License
Apache-2.0
1 maintainer
Metadata
1 maintainer
Release files for helm-langchain 0.4.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | |
|---|---|---|---|---|
| helm_langchain-0.4.0.tar.gz | 4.2 kB | Without provenance | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| helm_langchain-0.4.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 8.8 kB
Release files / helm_langchain-0.4.0.tar.gz
| Download URL | helm_langchain-0.4.0.tar.gz |
|---|---|
| Size | 4.2 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
67a5b75642b39906f03c19834d3ca7988138b587ccca7669fb2d92736787f746
|
|
BLAKE2b-256 checksum How to use checksums |
1c5c3a6fbaa80f41ecbf1419adf09fa98d52a65b900d46f93178f482a55c86f5
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
No |
| Uploaded via |
twine/6.2.0 CPython/3.12.11
|
Release files / helm_langchain-0.4.0-py3-none-any.whl
| Download URL | helm_langchain-0.4.0-py3-none-any.whl |
|---|---|
| Size | 4.5 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
72689238f3d845d6f00065e5d99eb37ab381f03dd9ec621fbd592300cb4f635a
|
|
BLAKE2b-256 checksum How to use checksums |
19c38966e100990caaaa17b8617b7e2d2027a7cdd0ccab590196c3add54f7f66
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
No |
| Uploaded via |
twine/6.2.0 CPython/3.12.11
|
Security for helm-langchain 0.4.0
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No provenance found
None of the files in this release were uploaded with provenance metadata.
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