Create a new Dataverse table (entity) with specified attributes
AI agents use create_entity to create or update resources in Dataverse — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Dataverse environment.
Creating a new entity is a Write operation because it creates a persistent data structure in the Dataverse environment. While reversible (the entity could theoretically be deleted), it represents a significant structural modification to the data model and could have broad implications across the system.
From the tool's definition Tool creates a new Dataverse table (entity) with specified attributes. This is a data structure creation operation that modifies the schema of the Dataverse environment.
Documented attack patterns abuse exactly the kind of access create_entity gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Dataverse, and nothing reaches the server without passing your rules. This is the rule we recommend for create_entity:
{
"version": "1",
"default": "deny",
"tools": {
"create_entity": {
"limits": [
{
"counter": "create_entity_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_entity 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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Create a new Dataverse table (entity) with specified attributes. It is categorised as a Write tool in the Dataverse MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Dataverse MCP server in PolicyLayer and add a rule for create_entity: 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 Dataverse. Nothing to install.
create_entity 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_entity 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_entity. 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_entity is provided by the Dataverse MCP server (rededis/dataverse-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Dataverse, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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22 Dataverse tools catalogued and risk-classified — across an index of 43,000+ MCP servers.