APort Agent Guardrail for LangChain

APort Agent Guardrail for LangChain/LangGraph — pre-action authorization for AI agents: an AsyncCallbackHandler that verifies every tool call against your passport and policies before execution. On deny, raises GuardrailViolation.

Install

pip install aport-agent-guardrails-langchain

Requires aport-agent-guardrails (core); installs automatically.

Setup

aport-langchain setup

Writes config to ~/.aport/langchain/config.yaml.
Run the passport wizard with: npx @aporthq/aport-agent-guardrails --framework=langchain.

Usage

from aport_guardrails_langchain import APortCallback, GuardrailViolation
from langchain.agents import create_agent

# Add callback to your agent
agent = create_agent(model=model, tools=tools)

try:
    result = await agent.ainvoke(
        {"messages": [{"role": "user", "content": "run the task"}]},
        config={"callbacks": [APortCallback()]},
    )
except GuardrailViolation as e:
    print(f"Blocked: {e.code} - {e}")
    print("Reasons:", e.reasons)

Config is auto-loaded from .aport/config.yaml or ~/.aport/langchain/config.yaml. Override with APortCallback(config_path="/path/to/config.yaml").

Config

mode: local | api
passport_path: path to passport JSON (local mode)
agent_id: ap_xxx (API mode, hosted passport)
api_url: optional; default https://api.aport.io

Tests

cd python/langchain_adapter
pip install -e ".[dev]"
pip install -e ../aport_guardrails
pytest tests/ -v

Metadata

Release files for aport-agent-guardrails-langchain 1.0.35

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for aport-agent-guardrails-langchain 1.0.35
File	Size	Uploaded
aport_agent_guardrails_langchain-1.0.35.tar.gz	6.4 kB	Oct 1, 2026	Details

Built distribution (wheel)

Table of built distributions (wheels) for aport-agent-guardrails-langchain 1.0.35
File	Interpreter	ABI	Platform	Reset
aport_agent_guardrails_langchain-1.0.35-py3-none-any.whl 5.4 kB Oct 1, 2026	Python 3	none	any	Details

Total release size: 11.8 kB

Release files / aport_agent_guardrails_langchain-1.0.35.tar.gz

Download URL	aport_agent_guardrails_langchain-1.0.35.tar.gz
Size	6.4 kB
Tags	Source
SHA-256 checksum How to use checksums	`87d5e75c6c8053a9c2fe03278a507ba6250c5351a0bd84c52f40920346b3c96a`
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Uploaded via	`twine/7.0.0 CPython/3.10.21`

Release files / aport_agent_guardrails_langchain-1.0.35-py3-none-any.whl

Download URL	aport_agent_guardrails_langchain-1.0.35-py3-none-any.whl
Size	5.4 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`1297e11b08afbf36f839a7dbb0b9f88647c1e31c8b1357ca4f2fc5e404ce2a63`
BLAKE2b-256 checksum How to use checksums	`cba968e10229a7e5d7b56bd89e29993cb3048112b6ded3174a12a71c5b14d924`
Upload date	Oct 1, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/7.0.0 CPython/3.10.21`