AI agents use insert_shape to create or update resources in Office Editor — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Office Editor environment.
The tool creates or adds new shapes to office documents, which is a reversible modification of document content. This fits the Write category: it modifies data but does not execute arbitrary code, destroy data irreversibly, or move money. Severity is medium because inserting shapes could be misused to deface or obfuscate document content, but the impact is limited to the specific document and is easily undone.
From the tool's definition Tool name 'insert_shape' indicates adding/modifying document content. Server context shows this is an office document editor ('creating and editing Word, Excel, and PowerPoint documents').
Documented attack patterns abuse exactly the kind of access insert_shape gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Office Editor, and nothing reaches the server without passing your rules. This is the rule we recommend for insert_shape:
{
"version": "1",
"default": "deny",
"tools": {
"insert_shape": {
"limits": [
{
"counter": "insert_shape_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}insert_shape 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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insert_shape. It is categorised as a Write tool in the Office Editor MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Office Editor MCP server in PolicyLayer and add a rule for insert_shape: 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 Office Editor. Nothing to install.
insert_shape 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 insert_shape 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 insert_shape. 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.
insert_shape is provided by the Office Editor MCP server (thewdy/office-editor-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 88 Office Editor tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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88 Office Editor tools catalogued and risk-classified — across an index of 42,500+ MCP servers.