crypto_verify_algorithm · Js Reverse MCP: Risk & Policy

WHAT IT DOES

What crypto_verify_algorithm does on Js Reverse

AI agents invoke crypto_verify_algorithm to trigger actions in Js Reverse. 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.

WHY IT NEEDS A POLICY

Why crypto_verify_algorithm needs a policy

This tool executes cryptographic operations using a local library, taking plaintext and parameters as input and running them through an encryption process to compare outputs. It triggers actual computation/execution of crypto code rather than merely reading or writing data.

From the tool's definition 使用本地加密库验证猜测的算法是否正确（输入明文+参数，对比是否能得到相同密文）— runs local crypto library operations to verify an algorithm by executing encryption with provided plaintext and parameters

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

crypto_verify_algorithm Rate-limited

crypto_verify_algorithm 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": {
    "crypto_verify_algorithm": {
      "limits": [
        {
          "counter": "crypto_verify_algorithm_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Js Reverse, so you can run agents against it safely.

FAQ

Questions about crypto_verify_algorithm

What does the crypto_verify_algorithm tool do? +

使用本地加密库验证猜测的算法是否正确（输入明文+参数，对比是否能得到相同密文）. It is categorised as a Execute tool in the Js Reverse MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on crypto_verify_algorithm? +

Register the Js Reverse MCP server in PolicyLayer and add a rule for crypto_verify_algorithm: 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 Js Reverse. Nothing to install.

What risk level is crypto_verify_algorithm? +

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

Can I rate-limit crypto_verify_algorithm? +

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

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

crypto_verify_algorithm is provided by the Js Reverse MCP server (jenn619/js-reverse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.