gts_block_user
Block an account system-wide (the authenticated user no longer sees their posts and vice versa). Rate-limited: 5/hour.
This record as markdown: /tools/kh0pper-crow/gts-block-user.md
What gts_block_user does on Crow
AI agents use gts_block_user to create or update resources in Crow, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Crow environment.
Why gts_block_user is rated Medium
Blocking a user modifies account relationship state, but it is reversible (users can be unblocked). It creates a block relationship between two accounts. No data is permanently deleted. Severity is medium because misuse could disrupt communications for the authenticated user or targeted accounts, but it's rate-limited to 5/hour reducing blast radius.
From the tool's definition Block an account system-wide (the authenticated user no longer sees their posts and vice versa)
Attacks that exploit this kind of access
The rule that runs gts_block_user safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Crow, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For gts_block_user, this is the rule to start with:
gts_block_user stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Crow, apply this rule, and every gts_block_user call is checked against it from then on.
Questions about gts_block_user
Block an account system-wide (the authenticated user no longer sees their posts and vice versa). Rate-limited: 5/hour. It is categorised as a Write tool in the Crow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Crow MCP server in PolicyLayer and add a rule for gts_block_user: 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 Crow. Nothing to install.
gts_block_user is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the gts_block_user 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 gts_block_user. 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.
gts_block_user is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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