Create a curated set of custom fields in your workspace in one call. Either by
AI agents use plutio_apply_custom_fields_bundle to create or update resources in Plutio — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Plutio environment.
This tool creates new custom fields in a workspace, which is a reversible write operation. It modifies the configuration/schema of the workspace by adding custom fields, but does not delete data, execute arbitrary code, or move money. The blast radius is medium because misconfiguration of custom fields could impact data organization and workflows, but changes can be undone or modified later.
From the tool's definition Tool name 'plutio_apply_custom_fields_bundle' and description indicating it will 'Create a curated set of custom fields in your workspace in one call', which is a data creation operation.
Documented attack patterns abuse exactly the kind of access plutio_apply_custom_fields_bundle gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Plutio, and nothing reaches the server without passing your rules. This is the rule we recommend for plutio_apply_custom_fields_bundle:
{
"version": "1",
"default": "deny",
"tools": {
"plutio_apply_custom_fields_bundle": {
"limits": [
{
"counter": "plutio_apply_custom_fields_bundle_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}plutio_apply_custom_fields_bundle 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.
Free to start. No card required.
Create a curated set of custom fields in your workspace in one call. Either by. It is categorised as a Write tool in the Plutio MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Plutio MCP server in PolicyLayer and add a rule for plutio_apply_custom_fields_bundle: 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 Plutio. Nothing to install.
plutio_apply_custom_fields_bundle 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 plutio_apply_custom_fields_bundle 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 plutio_apply_custom_fields_bundle. 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.
plutio_apply_custom_fields_bundle is provided by the Plutio MCP server (thecreativelabs/plutio-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Plutio, 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.
16 Plutio tools catalogued and risk-classified — across an index of 43,000+ MCP servers.