api_nfd_browse_nfds

THE RISK

Low Risk

Why api_nfd_browse_nfds needs a policy

This tool retrieves and filters data about NFDs (Algorand Name Service domains) without altering state, executing commands, or moving assets. It is a read-only query operation with minimal risk if misused by an AI agent.

From the tool's definition Tool name 'browse_nfds' and description 'Browse NFDs with various filters' indicate a query/retrieval operation. No modifications, deletions, or financial transactions are implied.

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

POLICY

How to control api_nfd_browse_nfds

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

policy.json

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

api_nfd_browse_nfds 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 Algorand MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Go deeper

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
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 →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about api_nfd_browse_nfds

What does the api_nfd_browse_nfds tool do? +

Browse NFDs with various filters. It is categorised as a Read tool in the Algorand MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on api_nfd_browse_nfds? +

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

What risk level is api_nfd_browse_nfds? +

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

Can I rate-limit api_nfd_browse_nfds? +

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

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

api_nfd_browse_nfds is provided by the Algorand MCP server (goplausible/algorand-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Algorand MCP tool call.

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

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