tool_with_context
AI agents call tool_with_context to retrieve information from MCP NIF PT without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The server's stated purpose is querying and analyzing public company information from the NIF.PT API. All named sibling tools perform read-only operations (search, get, check status). No sibling tools suggest write, delete, or execute capabilities. The empty description reduces confidence, but the server's overall design pattern indicates this tool likely retrieves or filters company data without side effects.
From the tool's definition Tool is part of a MCP server described as 'querying and analyzing information about Portuguese companies' with sibling tools like 'find_nif_by_name', 'get_company', 'search_companies_by_name_and_city', and 'is_active' that are all data retrieval operations.
Attacks that exploit this kind of access
tool_with_context. It is categorised as a Read tool in the MCP NIF PT MCP Server, which means it retrieves data without modifying state.
Register the MCP NIF PT MCP server in PolicyLayer and add a rule for tool_with_context: 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 NIF PT. Nothing to install.
tool_with_context 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 tool_with_context 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 tool_with_context. 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.
tool_with_context is provided by the MCP NIF PT MCP server (ruicarvalho1/mcp_nif). 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.
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