add_to_company_list

Add company IDs to an existing saved company/account list.

SERVERStarfield SOURCE@adrata/starfield-mcp

Medium RISK CLASS

Category Write

Parameters 22 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/adrata-starfield-mcp/add-to-company-list.md

WHAT IT DOES

What add_to_company_list does on Starfield

AI agents use add_to_company_list to create or update resources in Starfield, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Starfield environment.

Parameter	Type	Required	Description
`companyIds`	array	Yes
`companyListId`	string	Yes

Parameters from the server's own tool schema.

RISK

Why add_to_company_list is rated Medium

An AI agent can call add_to_company_list faster than any human can review: one bad instruction and it creates or modifies resources in Starfield by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add_to_company_list safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Starfield, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For add_to_company_list, this is the rule to start with:

add_to_company_list Rate-limited

add_to_company_list stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "add_to_company_list": {
      "limits": [
        {
          "counter": "add_to_company_list_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Starfield, apply this rule, and every add_to_company_list call is checked against it from then on.

FAQ

Questions about add_to_company_list

What does the add_to_company_list tool do? +

Add company IDs to an existing saved company/account list. It is categorised as a Write tool in the Starfield MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does add_to_company_list accept? +

add_to_company_list accepts 2 parameters: companyIds, companyListId. Required: companyIds, companyListId. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on add_to_company_list? +

Register the Starfield MCP server in PolicyLayer and add a rule for add_to_company_list: 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 Starfield. Nothing to install.

What risk level is add_to_company_list? +

add_to_company_list is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit add_to_company_list? +

Yes. Add a rate_limit block to the add_to_company_list 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 add_to_company_list completely? +

Set action: deny in the PolicyLayer policy for add_to_company_list. 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 add_to_company_list? +

add_to_company_list is provided by the Starfield MCP server (@adrata/starfield-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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