Add image watermark to PDF pages. Supports PNG and JPG images with custom opacity and position.
Part of the Parseflow server.
Free to start. No card required.
AI agents use add_image_watermark to create or modify resources in Parseflow. 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 add_image_watermark 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 Parseflow.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"add_image_watermark": {
"limits": [
{
"counter": "add_image_watermark_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Parseflow policy for all 23 tools.
These attack patterns abuse exactly the kind of access add_image_watermark 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.
Add image watermark to PDF pages. Supports PNG and JPG images with custom opacity and position.. It is categorised as a Write tool in the Parseflow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Parseflow MCP server in PolicyLayer and add a rule for add_image_watermark: 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 Parseflow. Nothing to install.
add_image_watermark 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 add_image_watermark 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 add_image_watermark. 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.
add_image_watermark is provided by the Parseflow MCP server (parseflow-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 23 Parseflow 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.