Greene Comply
Greene Comply

Greene Comply + LangChain

Enforce per-agent budgets and human-in-the-loop approvals directly within your LangChain and LangGraph workflows.

Official SDK ShippedREST API · Python SDK · TypeScript SDK · MCP (stdio)
Why it matters

The problem this solves.

LangChain is the standard for building production agents, but teams struggle with cost control. Greene Comply provides official Python and TypeScript wrappers that add a spend-governance layer to any LangChain tool, letting you block or hold actions that exceed policy.
How it works

The integration flow.

  1. 01

    Define Spend Policy

    Create a budget and threshold policy in Greene Comply for your specific agentic chain.

  2. 02

    Wrap Your Tools

    Use the official Greene governor to wrap any LangChain tool (Sync or Async) in one line of code.

  3. 03

    Authorize Before Execution

    The wrapper automatically calls Greene Comply to check budget and identity before the tool runs.

  4. 04

    Safe Tool Execution

    Tools only execute on approval; otherwise, they raise a SpendGovernanceError the agent can read.

What goes where

What Greene controls vs. what LangChain handles.

Greene ComplyGreene Comply
  • Spend limits and policy enforcement
  • Approval queue management
  • Immutable audit logs
LangChain
  • Agent orchestration and routing
  • State management
  • Tool execution memory
In production

Use cases and who benefits.

Use cases
  • LangGraph spend control nodes
  • Human-in-the-loop procurement flows
  • Per-customer agent budget enforcement
  • Automated financial research auditing
Who benefits
Engineering

One-line tool wrappers for Python and TypeScript.

Finance

Granular budget controls for production AI workflows.

Get started

Ship governed agent spend on this stack.

  1. 01Create a Greene Comply sandbox account.
  2. 02Install the greene-langchain-py or greene-langchain-js package.
  3. 03Wrap any spend-capable tool with the GreeneSpendGovernor.
Try sandbox Book a walkthrough