calculate_band_structure

THE RISK

High Risk

Why calculate_band_structure needs a policy

This tool initiates a computational job (band structure calculation) on an external scientific computing system. It is not merely reading existing data but actively running a calculation. Effects depend on input parameters (structure, k-path, etc.) and consume compute resources.

From the tool's definition 'Calculate ABACUS band structure' — triggers an external quantum chemistry computation using the ABACUS engine

Documented attack patterns abuse exactly the kind of access calculate_band_structure gives an agent:

POLICY

How to control calculate_band_structure

PolicyLayer is an MCP gateway — it sits between your AI agents and Abacus, and nothing reaches the server without passing your rules. This is the rule we recommend for calculate_band_structure:

policy.json

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

calculate_band_structure 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.

Create a free account and register Abacus — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Abacus tools

Destructive cancel_calculation Request cancellation of a calculation task (simplified). Execute run_md Run ABACUS Molecular Dynamics (MD) simulation. Execute run_optimization Run ABACUS geometry optimization. Execute run_scf Run ABACUS Self-Consistent Field (SCF) calculation. Execute calculate_dos Calculate ABACUS Density of States (DOS). Execute optimize_structure Alias for run_optimization tool. Performs geometry optimization. Write run_phonon_preparation Prepare input files for ABACUS DFPT phonon calculation. Write convert_structure Convert atomic structure data between formats.

All 22 Abacus tools →

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Go deeper

High-risk tools in Abacus → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about calculate_band_structure

What does the calculate_band_structure tool do? +

Calculate ABACUS band structure. It is categorised as a Execute tool in the Abacus MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on calculate_band_structure? +

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

What risk level is calculate_band_structure? +

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

Can I rate-limit calculate_band_structure? +

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

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

calculate_band_structure is provided by the Abacus MCP server (phelanshao/abacus-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Abacus tool call.

Start from Abacus, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →