This API endpoint returns a list of sanctioned entities for a given sanction source (ofac, uk, eu, au, etc)
AI agents call GetSourceSanctionedEntities to retrieve information from Twelve Data MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves compliance-related reference data (lists of sanctioned entities from public sources like OFAC, UK, EU, Australia sanctions lists). It is a straightforward read operation that queries static or semi-static reference information. While the data itself is sensitive for compliance purposes, the tool performs no write, delete, execute, or financial operations.
From the tool's definition Tool name 'GetSourceSanctionedEntities' and description 'returns a list of sanctioned entities' indicate a retrieval/query operation with no data modification or side effects.
Documented attack patterns abuse exactly the kind of access GetSourceSanctionedEntities gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Twelve Data MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for GetSourceSanctionedEntities:
{
"version": "1",
"default": "deny",
"tools": {
"GetSourceSanctionedEntities": {}
}
}GetSourceSanctionedEntities is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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This API endpoint returns a list of sanctioned entities for a given sanction source (ofac, uk, eu, au, etc). It is categorised as a Read tool in the Twelve Data MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Twelve Data MCP Server MCP server in PolicyLayer and add a rule for GetSourceSanctionedEntities: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Twelve Data MCP Server. Nothing to install.
GetSourceSanctionedEntities is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the GetSourceSanctionedEntities rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for GetSourceSanctionedEntities. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
GetSourceSanctionedEntities is provided by the Twelve Data MCP Server MCP server (twelvedata/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 186 Twelve Data MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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186 Twelve Data MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.