Get the trust score and vouch chain for an agent.
AI agents call aip_trust_score to retrieve information from Aip Identity without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves trust metadata (trust score and vouch chain) for an agent without creating, modifying, deleting, or executing any operations. It is purely informational and read-only. The severity is low because even in an agent misuse scenario, reading trust information poses minimal direct harm — it informs decisions but does not execute actions or alter state.
From the tool's definition Tool name 'aip_trust_score' and description 'Get the trust score and vouch chain for an agent' indicate a retrieval operation with no modification or side effects. The verb 'Get' explicitly signals a read-only query.
Attacks that exploit this kind of access
Get the trust score and vouch chain for an agent. It is categorised as a Read tool in the Aip Identity MCP Server, which means it retrieves data without modifying state.
Register the Aip Identity MCP server in PolicyLayer and add a rule for aip_trust_score: 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 Aip Identity. Nothing to install.
aip_trust_score 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 aip_trust_score 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 aip_trust_score. 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.
aip_trust_score is provided by the Aip Identity MCP server (the-nexus-guard/aip-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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