Submit a new URL for scanning (requires key).
Risk signalsAccepts URL/endpoint input (url)
Part of the Urlscan Io server.
Free to start. No card required.
AI agents use submit to create or modify resources in Urlscan Io. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call submit repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Urlscan Io.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"submit": {
"limits": [
{
"counter": "submit_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Urlscan Io policy for all 25 tools.
These attack patterns abuse exactly the kind of access submit gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Submit a new URL for scanning (requires key).. It is categorised as a Write tool in the Urlscan Io MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Urlscan Io MCP server in PolicyLayer and add a rule for submit: 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 Urlscan Io. Nothing to install.
submit 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 submit 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 submit. 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.
submit is provided by the Urlscan Io MCP server (https://gateway.pipeworx.io/urlscan-io/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 25 Urlscan Io tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.