make_app_call_txn

Create an application call transaction

SERVERAlgorand MCP SOURCEgoplausible/algorand-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/goplausible-algorand-mcp/make-app-call-txn.md

WHAT IT DOES

What make_app_call_txn does on Algorand MCP

AI agents invoke make_app_call_txn to trigger actions in Algorand MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why make_app_call_txn is rated High

Application call transactions invoke smart contract code on-chain. Depending on the contract logic, this can have wide-ranging effects including state changes, asset transfers, or other irreversible operations. This is an Execute-category action with high severity because misuse could trigger arbitrary on-chain smart contract execution with potentially significant consequences.

From the tool's definition 'Create an application call transaction' — triggers execution of smart contract logic on the Algorand blockchain

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs make_app_call_txn safely

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

make_app_call_txn Rate-limited

make_app_call_txn stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "make_app_call_txn": {
      "limits": [
        {
          "counter": "make_app_call_txn_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about make_app_call_txn

What does the make_app_call_txn tool do? +

Create an application call transaction. It is categorised as a Execute tool in the Algorand MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on make_app_call_txn? +

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

What risk level is make_app_call_txn? +

make_app_call_txn is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit make_app_call_txn? +

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

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

make_app_call_txn is provided by the Algorand MCP server (goplausible/algorand-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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