List Secrets Manager secret groups (stores) in an environment. Returns metadata only — no secret values are ever returned. Use the storeId from this result with secrets_list_secrets.
AI agents call secrets_list_stores to retrieve information from Anypoint MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves organizational metadata about secret stores without exposing sensitive values or modifying any data. It is a pure read operation used to discover available secret management resources. The blast radius is minimal—worst case, an attacker learns the names and IDs of secret stores but cannot access their contents or make changes.
From the tool's definition Tool explicitly returns 'metadata only — no secret values are ever returned' and enables listing/querying of secret groups/stores. The description confirms this is a retrieval operation with no side effects.
Attacks that exploit this kind of access
List Secrets Manager secret groups (stores) in an environment. Returns metadata only — no secret values are ever returned. Use the storeId from this result with secrets_list_secrets. It is categorised as a Read tool in the Anypoint MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Anypoint MCP Server MCP server in PolicyLayer and add a rule for secrets_list_stores: 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 Anypoint MCP Server. Nothing to install.
secrets_list_stores 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 secrets_list_stores 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 secrets_list_stores. 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.
secrets_list_stores is provided by the Anypoint MCP Server MCP server (sravannerella/mulesoft-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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