identity-oidc-public-keys-read
AI agents call identity-oidc-public-keys-read 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.
This tool retrieves OIDC public keys from Vault's identity engine. Public keys are inherently non-secret and their retrieval has no side effects—no data is modified, deleted, or executed. While the description is missing (lowering confidence slightly), the explicit 'read' verb and 'public-keys' object in the name clearly indicate a Read operation.
From the tool's definition Tool name contains 'read' and is prefixed with 'identity-oidc-public-keys', indicating retrieval of public cryptographic keys. The description is empty, but the naming convention strongly suggests a query operation without side effects.
Attacks that exploit this kind of access
identity-oidc-public-keys-read. 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 identity-oidc-public-keys-read: 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.
identity-oidc-public-keys-read 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 identity-oidc-public-keys-read 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 identity-oidc-public-keys-read. 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.
identity-oidc-public-keys-read 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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