Verify an AI agent skill by its canonical SHA-256 hash.
AI agents call mt_skill_verify to retrieve information from MolTrust MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The verb 'verify' combined with 'by its canonical SHA-256 hash' indicates a lookup or validation check against existing data. This is a query operation with no capability to modify, delete, or execute external actions. The low severity reflects that misuse would at worst return incorrect validation results without operational impact.
From the tool's definition Tool description states 'Verify an AI agent skill by its canonical SHA-256 hash' — verify is a read operation that checks/validates without modifying data. No side effects or state changes.
Attacks that exploit this kind of access
Verify an AI agent skill by its canonical SHA-256 hash. It is categorised as a Read tool in the MolTrust MCP Server MCP Server, which means it retrieves data without modifying state.
Register the MolTrust MCP Server MCP server in PolicyLayer and add a rule for mt_skill_verify: 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 MolTrust MCP Server. Nothing to install.
mt_skill_verify 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 mt_skill_verify 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 mt_skill_verify. 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.
mt_skill_verify is provided by the MolTrust MCP Server MCP server (pypi:moltrust-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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