List all currently indexed API files.
AI agents call list_indexed_apis to retrieve information from Code Declaration Lookup MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns information about indexed API files without creating, modifying, deleting, or executing anything. It is a pure read operation with minimal security impact—disclosure of which APIs are indexed poses no direct harm to systems or data integrity.
From the tool's definition Tool name 'list_indexed_apis' and description 'List all currently indexed API files' indicate a retrieval operation with no modification or execution capability.
Attacks that exploit this kind of access
List all currently indexed API files. It is categorised as a Read tool in the Code Declaration Lookup MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Code Declaration Lookup MCP Server MCP server in PolicyLayer and add a rule for list_indexed_apis: 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 Code Declaration Lookup MCP Server. Nothing to install.
list_indexed_apis 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 list_indexed_apis 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 list_indexed_apis. 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.
list_indexed_apis is provided by the Code Declaration Lookup MCP Server MCP server (osinmv/function-lookup-mcp). 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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