get_flow_outputs

THE RISK

Low Risk

Why get_flow_outputs needs a policy

This is a Read operation—it retrieves execution outputs from ServiceNow workflows without modifying or deleting data. However, the severity is medium rather than low because flow outputs in a ticketing/ITSM system may contain sensitive information (credentials, API keys, PII, business logic) depending on what the workflow processed.

From the tool's definition Tool name 'get_flow_outputs' and description 'Retrieve outputs from a completed flow/subflow/action execution' indicates data retrieval with no side effects.

Documented attack patterns abuse exactly the kind of access get_flow_outputs gives an agent:

POLICY

How to control get_flow_outputs

PolicyLayer is an MCP gateway — it sits between your AI agents and Now Sdk Ext, and nothing reaches the server without passing your rules. This is the rule we recommend for get_flow_outputs:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_flow_outputs": {}
  }
}

get_flow_outputs is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Now Sdk Ext — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

Related tools and policies

More Now Sdk Ext tools

Destructive cancel_flow Cancel a running or paused flow execution by its context ID. Destructive query_delete_records Find records matching an encoded query and delete them all. Execute aggregate_grouped Run aggregate functions (COUNT, AVG, MIN, MAX, SUM) grouped by a field on any Execute execute_action Execute a ServiceNow Flow Designer action by scoped name. Execute execute_flow Execute a published ServiceNow Flow Designer flow by scoped name. Execute execute_script Execute JavaScript on a ServiceNow instance using Scripts - Background Execute execute_subflow Execute a ServiceNow Flow Designer subflow by scoped name. Execute run_atf_test Execute a single ServiceNow ATF (Automated Test Framework) test by its sys_id.

All 86 Now Sdk Ext tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about get_flow_outputs

What does the get_flow_outputs tool do? +

Retrieve outputs from a completed flow/subflow/action execution by its. It is categorised as a Read tool in the Now Sdk Ext MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_flow_outputs? +

Register the Now Sdk Ext MCP server in PolicyLayer and add a rule for get_flow_outputs: 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 Now Sdk Ext. Nothing to install.

What risk level is get_flow_outputs? +

get_flow_outputs is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_flow_outputs? +

Yes. Add a rate_limit block to the get_flow_outputs 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.

How do I block get_flow_outputs completely? +

Set action: deny in the PolicyLayer policy for get_flow_outputs. 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.

What MCP server provides get_flow_outputs? +

get_flow_outputs is provided by the Now Sdk Ext MCP server (sonisoft-cnanda/now-sdk-ext-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Now Sdk Ext tool call.

Start from Now Sdk Ext, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →