Encapsulate a shared secret using a KEM public key (key encapsulation)
AI agents invoke pqc_encapsulate to trigger actions in Post-Quantum Cryptography MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
This tool performs a cryptographic key encapsulation operation — it runs a KEM algorithm to generate and wrap a shared secret using a public key. This is an active cryptographic execution (producing ciphertext and a shared secret), not merely reading data or writing stored data.
From the tool's definition Encapsulate a shared secret using a KEM public key (key encapsulation)
Attacks that exploit this kind of access
Encapsulate a shared secret using a KEM public key (key encapsulation). It is categorised as a Execute tool in the Post-Quantum Cryptography MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Post-Quantum Cryptography MCP Server MCP server in PolicyLayer and add a rule for pqc_encapsulate: 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 Post-Quantum Cryptography MCP Server. Nothing to install.
pqc_encapsulate is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the pqc_encapsulate 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 pqc_encapsulate. 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.
pqc_encapsulate is provided by the Post-Quantum Cryptography MCP Server MCP server (scottdhughes/post-quantum-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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