Drill into a specific function from a fullscope_skeleton output. Takes a file path + expand handle (e.g.
AI agents call fullscope_expand to retrieve information from Mcp Agent Opt without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
fullscope_expand performs a retrieval and inspection operation on code structure data. It queries and returns detailed information about a function without altering it, executing it, or causing side effects. This is a read-only data retrieval operation, consistent with the server's stated purpose of 'token-budgeted multi-file reading' for code analysis.
From the tool's definition Tool description states it 'drill[s] into' and retrieves a 'specific function from a fullscope_skeleton output' based on file path and handle. Server description emphasizes 'reading' and 'context compression' with 'symbol searching' capabilities.
Attacks that exploit this kind of access
Drill into a specific function from a fullscope_skeleton output. Takes a file path + expand handle (e.g. It is categorised as a Read tool in the Mcp Agent Opt MCP Server, which means it retrieves data without modifying state.
Register the Mcp Agent Opt MCP server in PolicyLayer and add a rule for fullscope_expand: 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 Mcp Agent Opt. Nothing to install.
fullscope_expand 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 fullscope_expand 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 fullscope_expand. 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.
fullscope_expand is provided by the Mcp Agent Opt MCP server (justguy/fullscope-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.
Teams ship this data inside their own products. See what a licence covers →