Upload a new screenshot to a screenshot set. Provide the local file path, and this tool will handle the multi-step upload process.
Part of the Asc server.
Free to start. No card required.
AI agents use upload_screenshot to create or modify resources in Asc. 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 upload_screenshot 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 Asc.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"upload_screenshot": {
"limits": [
{
"counter": "upload_screenshot_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Asc policy for all 38 tools.
These attack patterns abuse exactly the kind of access upload_screenshot 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.
Upload a new screenshot to a screenshot set. Provide the local file path, and this tool will handle the multi-step upload process.. It is categorised as a Write tool in the Asc MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Asc MCP server in PolicyLayer and add a rule for upload_screenshot: 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 Asc. Nothing to install.
upload_screenshot 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 upload_screenshot 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 upload_screenshot. 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.
upload_screenshot is provided by the Asc MCP server (asc-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 38 Asc 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.