Is the OFAC SLS API Key required?

No. The SLS API is publicly accessible. However, providing an API key if you have one ensures higher rate limits and consistent access.

What is the difference between SDN and Non-SDN lists?

The SDN (Specially Designated Nationals) list contains individuals and entities whose assets are blocked. Non-SDN lists contain entities subject to other sanctions, such as sector-specific or prohibited accounts.

Can I see aliases for a specific person?

Yes! Use the `get_entity_details` tool with the specific Entity ID. The agent will return the full profile, including all known aliases, addresses, and identifying information.

OFAC Sanctions Service MCP Server for LangChain 10 tools — connect in under 2 minutes

Name: OFAC Sanctions Service
Availability: InStock
Author: Vinkius

python.langchain.com/docs/integrations/tools/mcp

Built by Vinkius GDPR 10 Tools Framework

LangChain is the leading Python framework for composable LLM applications. Connect OFAC Sanctions Service through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

import asyncio
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain_openai import ChatOpenAI
from langgraph.prebuilt import create_react_agent

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    async with MultiServerMCPClient({
        "ofac-sanctions-service": {
            "transport": "streamable_http",
            "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
        }
    }) as client:
        tools = client.get_tools()
        agent = create_react_agent(
            ChatOpenAI(model="gpt-4o"),
            tools,
        )
        response = await agent.ainvoke({
            "messages": [{
                "role": "user",
                "content": "Using OFAC Sanctions Service, show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

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* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About OFAC Sanctions Service MCP Server

Connect to the OFAC Sanctions List Service (SLS) API through your AI agent and explore authoritative data on sanctioned individuals, groups, and entities using natural conversation.

LangChain's ecosystem of 500+ components combines seamlessly with OFAC Sanctions Service through native MCP adapters. Connect 10 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.

What you can do

List Discovery — Retrieve identifiers for all available sanctions lists, including the Specially Designated Nationals (SDN) and Consolidated Non-SDN lists.
Update Monitoring — Check the timestamp of the last update for any sanctions list to ensure you are using the most current data.
Version Tracking — List historical and current versions of sanctions lists and retrieve specific version metadata.
Entity Inspection — Access detailed profile information for specific sanctioned entities, including names, aliases, and addresses.
Deltas & Full Versions — Retrieve metadata for full list versions or just the changes (deltas) between specific versions.
Entry Metrics — Get the total count of entities within a specific list version for audit purposes.
Tag Management — List all descriptive tags and labels associated with list versions.

The OFAC Sanctions Service MCP Server exposes 10 tools through the Vinkius. Connect it to LangChain in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect OFAC Sanctions Service to LangChain via MCP

Follow these steps to integrate the OFAC Sanctions Service MCP Server with LangChain.

Install dependencies

Run pip install langchain langchain-mcp-adapters langgraph langchain-openai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save the code and run python agent.py

Explore tools

The agent discovers 10 tools from OFAC Sanctions Service via MCP

Why Use LangChain with the OFAC Sanctions Service MCP Server

LangChain provides unique advantages when paired with OFAC Sanctions Service through the Model Context Protocol.

The largest ecosystem of integrations, chains, and agents. combine OFAC Sanctions Service MCP tools with 500+ LangChain components

Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step

LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging

Memory and conversation persistence let agents maintain context across OFAC Sanctions Service queries for multi-turn workflows

OFAC Sanctions Service + LangChain Use Cases

Practical scenarios where LangChain combined with the OFAC Sanctions Service MCP Server delivers measurable value.

RAG with live data: combine OFAC Sanctions Service tool results with vector store retrievals for answers grounded in both real-time and historical data

Autonomous research agents: LangChain agents query OFAC Sanctions Service, synthesize findings, and generate comprehensive research reports

Multi-tool orchestration: chain OFAC Sanctions Service tools with web scrapers, databases, and calculators in a single agent run

Production monitoring: use LangSmith to trace every OFAC Sanctions Service tool call, measure latency, and optimize your agent's performance

OFAC Sanctions Service MCP Tools for LangChain (10)

These 10 tools become available when you connect OFAC Sanctions Service to LangChain via MCP:

get_delta_version_metadata

Get delta version metadata

get_entity_details

Get specific entity metadata

get_full_version_metadata

Get full version metadata

get_list_last_updated

Check for list updates

get_sls_about

Get SLS API info

get_version_entry_count

Get total entries in a version

list_list_versions

List versions of a sanctions list

list_sanctions_lists

g. SDN, NONSDN). List available sanctions lists

list_version_entities

List entities in a version

list_version_tags

List tags for a version

Example Prompts for OFAC Sanctions Service in LangChain

Ready-to-use prompts you can give your LangChain agent to start working with OFAC Sanctions Service immediately.

"When was the SDN sanctions list last updated?"

"Get the details for entity ID '12345' in the latest SDN version."

"List all historical versions available for the SDN list."

Troubleshooting OFAC Sanctions Service MCP Server with LangChain

Common issues when connecting OFAC Sanctions Service to LangChain through the Vinkius, and how to resolve them.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

OFAC Sanctions Service + LangChain FAQ

Common questions about integrating OFAC Sanctions Service MCP Server with LangChain.

How does LangChain connect to MCP servers?

Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.

Which LangChain agent types work with MCP?

All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.