AI agents call worktree_list to retrieve information from Lockstep 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 active worktrees without modifying state, executing code, or causing side effects. It is a straightforward read operation for project introspection, consistent with the Read category definition (retrieves or queries data; no side effects).
From the tool's definition Tool name 'worktree_list' and description 'List all active lockstep worktrees in the project' indicate a retrieval operation with no data modification, creation, deletion, or execution of external commands.
Attacks that exploit this kind of access
List all active lockstep worktrees in the project. It is categorised as a Read tool in the Lockstep MCP Server, which means it retrieves data without modifying state.
Register the Lockstep MCP server in PolicyLayer and add a rule for worktree_list: 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 Lockstep. Nothing to install.
worktree_list 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 worktree_list 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 worktree_list. 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.
worktree_list is provided by the Lockstep MCP server (tmmoore286/lockstep-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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