Get all messages in a thread
AI agents call get_thread to retrieve information from Follow Plan 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 messages from a thread without side effects. It is a read-only query operation that fetches and returns data. No data is created, modified, deleted, or executed. The blast radius of misuse is minimal—an AI agent could only retrieve information already stored in the system.
From the tool's definition Tool name 'get_thread' and description 'Get all messages in a thread' indicate retrieval of existing data with no modification, creation, or deletion.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Get all messages in a thread. It is categorised as a Read tool in the Follow Plan MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Follow Plan MCP Server MCP server in PolicyLayer and add a rule for get_thread: 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 Follow Plan MCP Server. Nothing to install.
get_thread 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 get_thread 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 get_thread. 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.
get_thread is provided by the Follow Plan MCP Server MCP server (vibeclasses/follow-plan-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 →