search_masterdata

THE RISK

Low Risk

Why search_masterdata needs a policy

The tool performs a search operation on master data documents, which is a read-only retrieval action. Master data typically contains reference information (customers, products, accounts), and searching it has no side effects. Even in a payment protocol context, searching master data does not execute transactions, modify financial records, or delete data.

From the tool's definition Tool name 'search_masterdata' and description 'Search documents in a Master Data entity' indicate a query/retrieval operation with no modification capability.

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

POLICY

How to control search_masterdata

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for search_masterdata:

policy.json

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

search_masterdata 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 Mcp Ap2 — 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 →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 1300 Mcp Ap2 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 search_masterdata

What does the search_masterdata tool do? +

Search documents in a Master Data entity. It is categorised as a Read tool in the Mcp Ap2 MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_masterdata? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for search_masterdata: 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 Mcp Ap2. Nothing to install.

What risk level is search_masterdata? +

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

Can I rate-limit search_masterdata? +

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

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

search_masterdata is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Ap2 tool call.

Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →