Return full contact details.
AI agents call contacts_get to retrieve information from AIOS Co-Founder MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries contact data without modifying, deleting, or executing operations. It falls squarely within the Read category. Severity is low because contact retrieval has minimal blast radius—it exposes stored contact information but does not enable financial transactions, destructive actions, or arbitrary code execution. Confidence is high given the clear read-only semantics.
From the tool's definition Tool name 'contacts_get' and description 'Return full contact details' indicate retrieval of existing contact information with no modifications, deletions, or side effects.
Attacks that exploit this kind of access
Return full contact details. It is categorised as a Read tool in the AIOS Co-Founder MCP MCP Server, which means it retrieves data without modifying state.
Register the AIOS Co-Founder MCP server in PolicyLayer and add a rule for contacts_get: 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 AIOS Co-Founder MCP. Nothing to install.
contacts_get 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 contacts_get 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 contacts_get. 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.
contacts_get is provided by the AIOS Co-Founder MCP server (varun-b-nagaraj/python-mcp-server). 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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