Adds an embed item (e.g., video, website) to the board.
AI agents use create_embed_item to create or update resources in Miro MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Miro MCP Server environment.
This tool creates and adds new content (embed items) to a Miro board, modifying the board state reversibly. It is a Write operation because it creates data without deletion or irreversible consequences. Severity is medium because malicious agents could clutter boards or embed malicious content, but the effect is reversible and scoped to a single board.
From the tool's definition Tool description explicitly states 'Adds an embed item' which creates new content on the board; grouped with sibling tools like create_app_card_item, create_card_item, create_sticky_note_item, create_text_item that are all creation/write operations.
Documented attack patterns abuse exactly the kind of access create_embed_item gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Miro MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create_embed_item:
{
"version": "1",
"default": "deny",
"tools": {
"create_embed_item": {
"limits": [
{
"counter": "create_embed_item_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_embed_item 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 an embed item (e.g., video, website) to the board. It is categorised as a Write tool in the Miro MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Miro MCP Server MCP server in PolicyLayer and add a rule for create_embed_item: 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 Miro MCP Server. Nothing to install.
create_embed_item 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 create_embed_item 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 create_embed_item. 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.
create_embed_item is provided by the Miro MCP Server MCP server (luotocompany/mcp-server-miro). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Miro MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
30 Miro MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.