5D for LangGraph interrupt and approval flows

Pain it solves

LangGraph gives you interrupts and durable state, but you still need a policy decision before execution. Otherwise every team reimplements approval logic differently.

Best when you already have interrupt-driven HITL and want a reusable gate node instead of ad-hoc approval checks scattered through the graph.

When to use 5D

Use 5D when your agent can write files, run shell, call external APIs, or touch sensitive tools.

In this setup, 5D returns a normalized runtime decision: allow, review, or deny, plus a tripwire_triggered flag for runtimes that want a simpler guardrail signal.

Install

git clone https://github.com/theDoc001/fivedrisk.git
cd fivedrisk
python3 -m venv .venv
source .venv/bin/activate
pip install -e ".[dev]"

Minimal example

from fivedrisk.langgraph_node import fivedrisk_gate_node, route_by_band

graph.add_node("fivedrisk_gate", fivedrisk_gate_node)
graph.add_edge("builder", "fivedrisk_gate")
graph.add_conditional_edges(
    "fivedrisk_gate",
    route_by_band,
    {"go": "tool_executor", "ask": "hitl_review", "stop": "deny_response"},
)