kv2-metadata-and-versions
AI agents call kv2-metadata-and-versions to retrieve information from Vault MCP Server (mschuchard) without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name pattern follows Vault's convention for read operations on secret metadata and versioning information. KV v2 metadata queries retrieve secret version history, rotation dates, and access patterns without modifying or destroying data. However, confidence is moderate-to-good (0.72) rather than high because the description is empty, creating minor ambiguity.
From the tool's definition Tool name 'kv2-metadata-and-versions' indicates retrieval of metadata and version information from Vault's KV v2 secrets engine. The 'metadata-and-versions' suffix strongly suggests a query/retrieval operation rather than modification or deletion.
Attacks that exploit this kind of access
kv2-metadata-and-versions. It is categorised as a Read tool in the Vault MCP Server (mschuchard) MCP Server, which means it retrieves data without modifying state.
Register the Vault MCP Server (mschuchard) MCP server in PolicyLayer and add a rule for kv2-metadata-and-versions: 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 Vault MCP Server (mschuchard). Nothing to install.
kv2-metadata-and-versions 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 kv2-metadata-and-versions 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 kv2-metadata-and-versions. 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.
kv2-metadata-and-versions is provided by the Vault MCP Server (mschuchard) MCP server (mschuchard/vault-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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