insert

Insert data into Supabase table

SERVERNcp SOURCE@portel/ncp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-portel-dev-ncp/insert.md

WHAT IT DOES

What insert does on Ncp

AI agents use insert to create or update resources in Ncp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ncp environment.

RISK

Why insert is rated Medium

The tool creates new records in a Supabase table, which is a reversible data modification operation. It does not delete or irreversibly alter data (Destructive), execute arbitrary code (Execute), move money (Financial), or merely retrieve data (Read).

From the tool's definition Tool name 'insert' combined with description 'Insert data into Supabase table' explicitly indicates creation/modification of data in a database.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs insert safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ncp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For insert, this is the rule to start with:

insert Rate-limited

insert 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "insert": {
      "limits": [
        {
          "counter": "insert_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ncp, apply this rule, and every insert call is checked against it from then on.

FAQ

Questions about insert

What does the insert tool do? +

Insert data into Supabase table. It is categorised as a Write tool in the Ncp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on insert? +

Register the Ncp MCP server in PolicyLayer and add a rule for insert: 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 Ncp. Nothing to install.

What risk level is insert? +

insert is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit insert? +

Yes. Add a rate_limit block to the insert 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.

How do I block insert completely? +

Set action: deny in the PolicyLayer policy for insert. 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.

What MCP server provides insert? +

insert is provided by the Ncp MCP server (@portel/ncp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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