Generate a single-use invite code to share with someone. The code expires in 24 hours and can only be used once. Share it via any channel (email, message, in person).
AI agents use crow_generate_invite 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.
This tool creates a new invite code (reversible data creation), which is a Write operation. The severity is low because invite codes are temporary (24-hour expiration), single-use, and represent a standard, low-risk collaborative feature. The action has no destructive, financial, or execution implications. Confidence is high because the function is straightforward and the description is clear.
From the tool's definition Tool generates and creates a single-use invite code artifact. The description explicitly states it "generates" a code that is then "shared", indicating creation of a new resource.
Documented attack patterns abuse exactly the kind of access crow_generate_invite gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Crow, and nothing reaches the server without passing your rules. This is the rule we recommend for crow_generate_invite:
{
"version": "1",
"default": "deny",
"tools": {
"crow_generate_invite": {
"limits": [
{
"counter": "crow_generate_invite_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}crow_generate_invite 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.
Free to start. No card required.
Generate a single-use invite code to share with someone. The code expires in 24 hours and can only be used once. Share it via any channel (email, message, in person). 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 crow_generate_invite: 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.
crow_generate_invite 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 crow_generate_invite 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 crow_generate_invite. 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.
crow_generate_invite 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.
Start from Crow, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
576 Crow tools catalogued and risk-classified — across an index of 43,000+ MCP servers.