zora_update_coin_uri · Zora Coins MCP Server MCP

WHAT IT DOES

What zora_update_coin_uri does on Zora Coins MCP Server

AI agents use zora_update_coin_uri to create or update resources in Zora Coins MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Zora Coins MCP Server environment.

WHY IT NEEDS A POLICY

Why zora_update_coin_uri needs a policy

This tool creates or modifies data reversibly by updating token metadata. While it requires authentication (owner wallet), an AI agent with access to the owner's credentials could misuse this to alter token properties, misleading users about the coin's attributes, contract details, or branding.

From the tool's definition The tool 'zora_update_coin_uri' modifies the token metadata URI for an existing coin, which is a reversible data mutation operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

zora_update_coin_uri Rate-limited

zora_update_coin_uri 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": {
    "zora_update_coin_uri": {
      "limits": [
        {
          "counter": "zora_update_coin_uri_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Zora Coins MCP Server, so you can run agents against it safely.

FAQ

Questions about zora_update_coin_uri

What does the zora_update_coin_uri tool do? +

Update the token metadata URI for an existing coin. Requires owner wallet. It is categorised as a Write tool in the Zora Coins MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on zora_update_coin_uri? +

Register the Zora Coins MCP Server MCP server in PolicyLayer and add a rule for zora_update_coin_uri: 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 Zora Coins MCP Server. Nothing to install.

What risk level is zora_update_coin_uri? +

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

Can I rate-limit zora_update_coin_uri? +

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

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

zora_update_coin_uri is provided by the Zora Coins MCP Server MCP server (r4topunk/zora-coins-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.