AI agents use add_picture to create or update resources in PPTX MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your PPTX MCP Server environment.
This tool creates or modifies presentation content by inserting image data into slides. It is categorized as Write because it adds new elements to a document in a reversible manner. Severity is medium because misuse could result in unwanted modifications to presentations, but the blast radius is contained to the affected file and does not affect system integrity, external systems, or data deletion.
From the tool's definition Tool name 'add_picture' and description 'Adds a picture to a slide from provided image data' indicate creation of new content within a presentation.
Documented attack patterns abuse exactly the kind of access add_picture gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and PPTX MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for add_picture:
{
"version": "1",
"default": "deny",
"tools": {
"add_picture": {
"limits": [
{
"counter": "add_picture_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}add_picture 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.
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Adds a picture to a slide from provided image data. It is categorised as a Write tool in the PPTX MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the PPTX MCP Server MCP server in PolicyLayer and add a rule for add_picture: 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 PPTX MCP Server. Nothing to install.
add_picture 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_picture 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_picture. 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_picture is provided by the PPTX MCP Server MCP server (samos123/pptx-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 11 PPTX MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
11 PPTX MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.