isw_unblock_card

Unblock a card. Requires confirm: true.

SERVERInterswitch SOURCEinterswitch-mcp-server

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-dairus01-interswitch-mcp-server/isw-unblock-card.md

WHAT IT DOES

What isw_unblock_card does on Interswitch

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

RISK

Why isw_unblock_card is rated Medium

Unblocking a card reverses a security restriction, re-enabling card usage. This is a reversible state change (Write), but carries high severity because it could allow fraudulent transactions if misused — restoring access to a previously blocked payment instrument.

From the tool's definition Unblock a card. Requires confirm: true.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs isw_unblock_card safely

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

isw_unblock_card Rate-limited

isw_unblock_card 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": {
    "isw_unblock_card": {
      "limits": [
        {
          "counter": "isw_unblock_card_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 Interswitch, apply this rule, and every isw_unblock_card call is checked against it from then on.

FAQ

Questions about isw_unblock_card

What does the isw_unblock_card tool do? +

Unblock a card. Requires confirm: true. It is categorised as a Write tool in the Interswitch MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on isw_unblock_card? +

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

What risk level is isw_unblock_card? +

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

Can I rate-limit isw_unblock_card? +

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

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

isw_unblock_card is provided by the Interswitch MCP server (interswitch-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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