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 Claude Desktop 10 tools — connect in under 2 minutes

Name: OFAC Sanctions Service
Availability: InStock
Author: Vinkius

modelcontextprotocol.io/quickstart/user

Built by Vinkius GDPR 10 Tools IDE

Claude Desktop is Anthropic's native application for interacting with Claude AI models on macOS and Windows. It was the first consumer application to ship with built-in MCP support, making it the reference implementation for the Model Context Protocol standard.

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The modern way to manage MCP Servers — no config files, no terminal commands. Install OFAC Sanctions Service and 2,500+ MCP Servers from a single visual interface.

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Classic Setup·json

{
  "mcpServers": {
    "ofac-sanctions-service": {
      // Your Vinkius token. get it at cloud.vinkius.com
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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High SecurityEnterprise-grade

IAMAccess control

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DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* 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.

Claude Desktop is the definitive way to connect OFAC Sanctions Service to your AI workflow. Add Vinkius Edge URL to your config, restart the app, and Claude immediately exposes all 10 tools in the chat interface. ask a question, Claude calls the right tool, and you see the answer. Zero code, zero context switching.

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 Claude Desktop 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 Claude Desktop via MCP

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

Open Claude Desktop Settings

Go to Settings → Developer → Edit Config to open claude_desktop_config.json

Add the MCP Server

Paste the configuration above into the mcpServers section

Restart Claude Desktop

Close and reopen Claude Desktop to load the new server

Start using OFAC Sanctions Service

Look for the 🔌 icon in the chat. your 10 tools are now available

Why Use Claude Desktop with the OFAC Sanctions Service MCP Server

Claude Desktop by Anthropic provides unique advantages when paired with OFAC Sanctions Service through the Model Context Protocol.

Claude Desktop is the reference MCP client. it was designed alongside the protocol itself, ensuring the most complete and stable MCP implementation available

Zero-code configuration: add a server URL to a JSON file and Claude instantly discovers and exposes all available tools in the chat interface

Claude's extended thinking capability lets it reason through multi-step tool usage, chaining multiple API calls to answer complex questions

Enterprise-grade security with local config storage. your tokens never leave your machine, and connections go directly to Vinkius Edge network

OFAC Sanctions Service + Claude Desktop Use Cases

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

Interactive data exploration: ask Claude to query DNS records, look up WHOIS data, and cross-reference results in a single conversation

Ad-hoc security audits: type a domain name and let Claude enumerate subdomains, check DNS history, and flag configuration anomalies. all through natural language

Executive briefings: generate comprehensive domain intelligence reports by asking Claude to compile findings into a formatted summary

Learning and training: new team members can explore API capabilities conversationally without needing to read documentation

OFAC Sanctions Service MCP Tools for Claude Desktop (10)

These 10 tools become available when you connect OFAC Sanctions Service to Claude Desktop 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 Claude Desktop

Ready-to-use prompts you can give your Claude Desktop 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 Claude Desktop

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

Server not appearing after restart

Ensure the JSON is valid (no trailing commas). Check the file path: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\\Claude\\ (Windows).

Authentication error

Verify your Vinkius token is correct. Go to cloud.vinkius.com to regenerate it if needed.

Tools not showing in chat

Click the 🔌 icon at the bottom of the chat input. If it shows 0 tools, the server may still be connecting. wait a few seconds.

OFAC Sanctions Service + Claude Desktop FAQ

Common questions about integrating OFAC Sanctions Service MCP Server with Claude Desktop.

How does Claude Desktop discover MCP tools?

When Claude Desktop starts, it reads the claude_desktop_config.json file and connects to each configured MCP server. It calls the tools/list endpoint to fetch the schema for every available tool, then surfaces them as clickable options in the chat interface via the 🔌 icon.

What happens if the MCP server is temporarily unavailable?

Claude Desktop handles disconnections gracefully. if the server is unreachable at startup, the tools simply won't appear. Once the server becomes available again, restarting Claude Desktop will re-establish the connection. There is no timeout penalty or error loop.

Can I connect multiple MCP servers simultaneously?

Yes. You can add as many servers as you need in the mcpServers section of the config file. Each server appears as a separate tool provider, and Claude can use tools from multiple servers in a single conversation turn.

Is there a limit on the number of tools per server?

Claude Desktop can handle hundreds of tools per server. However, for optimal LLM performance, Vinkius servers are designed to expose focused, well-documented tool sets rather than overwhelming the model with too many options.

Does Claude Desktop support Streamable HTTP transport?

Yes. Claude Desktop supports both SSE (Server-Sent Events) and the newer Streamable HTTP transport that Vinkius uses. Simply provide the server URL. Claude auto-negotiates the transport protocol.