sync_base

Synchronize Airtable base with external data

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/sync-base.md

WHAT IT DOES

What sync_base does on Ncp

AI agents use sync_base 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 sync_base is rated Medium

The tool performs data synchronization, which creates or modifies records reversibly in Airtable. This is a Write operation with high severity due to potential for large-scale unintended data modifications if the external data source or sync configuration is malicious or misconfigured.

From the tool's definition Tool description states 'Synchronize Airtable base with external data' — synchronization implies modifying/updating data in the target Airtable base based on external source data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs sync_base 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 sync_base, this is the rule to start with:

sync_base Rate-limited

sync_base 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": {
    "sync_base": {
      "limits": [
        {
          "counter": "sync_base_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 sync_base call is checked against it from then on.

FAQ

Questions about sync_base

What does the sync_base tool do? +

Synchronize Airtable base with external data. 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 sync_base? +

Register the Ncp MCP server in PolicyLayer and add a rule for sync_base: 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 sync_base? +

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

Can I rate-limit sync_base? +

Yes. Add a rate_limit block to the sync_base 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 sync_base completely? +

Set action: deny in the PolicyLayer policy for sync_base. 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 sync_base? +

sync_base 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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