coincap_rates

List crypto and fiat exchange rates from CoinCap.

SERVERUnClick SOURCE@unclick/mcp-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-malamutemayhem-unclick-mcp-server/coincap-rates.md

WHAT IT DOES

What coincap_rates does on UnClick

AI agents call coincap_rates to retrieve information from UnClick without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why coincap_rates is rated Low

This tool queries and returns exchange rate data from CoinCap without creating, modifying, deleting, or executing any operations. It is a pure read operation with minimal security risk. Even if misused by an agent, it only exposes public financial data without enabling financial transactions or destructive actions.

From the tool's definition Tool description explicitly states 'List crypto and fiat exchange rates' — a retrieval operation with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs coincap_rates safely

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

coincap_rates Allowed

coincap_rates is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about coincap_rates

What does the coincap_rates tool do? +

List crypto and fiat exchange rates from CoinCap. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on coincap_rates? +

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

What risk level is coincap_rates? +

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

Can I rate-limit coincap_rates? +

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

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

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

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