Retorna cotações atualizadas de ativos e moedas acompanhados pela Meelion, como dólar, euro, ouro, prata e Bitcoin. Use quando o usuário perguntar sobre câmbio, cotação atual, variação de moedas, metais ou criptoativos usados como referência de mercado. English keywords: USD/BRL, EUR/BRL, dollar,...
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AI agents call get_quotes to retrieve information from Meelion MCP without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though get_quotes only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"get_quotes": {}
}
}See the full Meelion MCP policy for all 5 tools.
These attack patterns abuse exactly the kind of access get_quotes gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Retorna cotações atualizadas de ativos e moedas acompanhados pela Meelion, como dólar, euro, ouro, prata e Bitcoin. Use quando o usuário perguntar sobre câmbio, cotação atual, variação de moedas, metais ou criptoativos usados como referência de mercado. English keywords: USD/BRL, EUR/BRL, dollar, euro, gold, silver, Bitcoin, BTC, market quotes.. It is categorised as a Read tool in the Meelion MCP MCP Server, which means it retrieves data without modifying state.
Register the Meelion MCP server in PolicyLayer and add a rule for get_quotes: 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 Meelion MCP. Nothing to install.
get_quotes is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_quotes 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.
Set action: deny in the PolicyLayer policy for get_quotes. 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.
get_quotes is provided by the Meelion MCP server (https://mcp.meelion.com/). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 5 Meelion MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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