ml_buscar_anuncios
AI agents call ml_buscar_anuncios to retrieve information from Mcp Brazil Marketplaces without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool searches and retrieves public marketplace advertisements. The server description explicitly states it 'search[es] and retrieve[s] public ads' with no mention of creating, modifying, or deleting data. This is a pure read operation with no side effects. The empty description lowers confidence slightly, but the semantic meaning of 'buscar' (search) and marketplace context make intent clear.
From the tool's definition Tool name 'ml_buscar_anuncios' (search ads on Mercado Livre) and server context indicating retrieval of public ads; sibling tools include 'olx_buscar_anuncios' and '*_detalhe_anuncio' (detail tools) which are clearly read operations on public marketplace data.
Attacks that exploit this kind of access
ml_buscar_anuncios. It is categorised as a Read tool in the Mcp Brazil Marketplaces MCP Server, which means it retrieves data without modifying state.
Register the Mcp Brazil Marketplaces MCP server in PolicyLayer and add a rule for ml_buscar_anuncios: 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 Mcp Brazil Marketplaces. Nothing to install.
ml_buscar_anuncios 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 ml_buscar_anuncios 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 ml_buscar_anuncios. 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.
ml_buscar_anuncios is provided by the Mcp Brazil Marketplaces MCP server (rodrigopg/mcp-brazil-marketplaces). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →