set-api-key

Set an API key for RPC or subgraph services (stored securely)

SERVERHats Protocol MCP Server SOURCEdennisonbertram/mcp-hats

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dennisonbertram-mcp-hats/set-api-key.md

WHAT IT DOES

What set-api-key does on Hats Protocol MCP Server

AI agents use set-api-key to create or update resources in Hats Protocol MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Hats Protocol MCP Server environment.

RISK

Why set-api-key is rated Medium

This tool modifies system state by storing API credentials. While not destructive (reversible), it is a Write operation as it creates/stores configuration data. Severity is high because compromised API key storage or misuse of credentials could enable unauthorized blockchain operations, given the context of managing decentralized organizational roles and permissions.

From the tool's definition Tool description explicitly states it 'Set[s] an API key for RPC or subgraph services (stored securely)'. This is a data modification operation that creates or stores sensitive credentials.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set-api-key safely

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

set-api-key Rate-limited

set-api-key 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": {
    "set-api-key": {
      "limits": [
        {
          "counter": "set-api-key_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 Hats Protocol MCP Server, apply this rule, and every set-api-key call is checked against it from then on.

FAQ

Questions about set-api-key

What does the set-api-key tool do? +

Set an API key for RPC or subgraph services (stored securely). It is categorised as a Write tool in the Hats Protocol 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 set-api-key? +

Register the Hats Protocol MCP Server MCP server in PolicyLayer and add a rule for set-api-key: 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 Hats Protocol MCP Server. Nothing to install.

What risk level is set-api-key? +

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

Can I rate-limit set-api-key? +

Yes. Add a rate_limit block to the set-api-key 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 set-api-key completely? +

Set action: deny in the PolicyLayer policy for set-api-key. 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 set-api-key? +

set-api-key is provided by the Hats Protocol MCP Server MCP server (dennisonbertram/mcp-hats). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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