// SCAN REPORT

Abacus

22 tools. 10 can modify or destroy data without limits.

1 destructive tool with no built-in limits. Policy required.

Last updated: 12 Jun 2026

10 can modify or destroy data

12 read-only

22 tools total

Community server · catalogue entry verified 12/06/2026

How to control Abacus ↓

TOOL MAP

What Abacus exposes to your agents

Read (12) Write / Execute (9) Destructive / Financial (1)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

Critical Risk

The most dangerous Abacus tools

Destructive · High cancel_calculation Cancelling a running calculation is an irreversible action — the computation state and any intermediate results are lost. Execute · High run_md This tool triggers execution of an external computational process (ABACUS MD engine) with side effects that persist in the system state and outputs. Execute · High run_optimization This tool executes a computationally intensive external operation (ABACUS geometry optimization) that runs code and triggers external processes. Execute · High run_scf This tool triggers execution of an external computational engine (ABACUS) to perform quantum chemistry calculations.

10 of Abacus's 22 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control Abacus

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

Deny destructive operations

{
  "cancel_calculation": {
    "deny_if": [
      {
        "conditions": [],
        "on_deny": "Blocked by default. Requires approval."
      }
    ]
  }
}

Destructive tools should never be available to autonomous agents without human approval.

Rate limit write operations

{
  "run_phonon_preparation": {
    "limits": [
      {
        "counter": "run_phonon_preparation_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "calculate_charge_density": {
    "limits": [
      {
        "counter": "calculate_charge_density_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register Abacus — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON ABACUS →

Free to start. No card required.

FULL CATALOGUE

All 22 Abacus tools

DESTRUCTIVE 1 tools

Destructive cancel_calculation Request cancellation of a calculation task (simplified).

EXECUTE 6 tools

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_band_structure Calculate ABACUS band structure. Execute calculate_dos Calculate ABACUS Density of States (DOS). Execute optimize_structure Alias for run_optimization tool. Performs geometry optimization.

WRITE 3 tools

Write run_phonon_preparation Prepare input files for ABACUS DFPT phonon calculation. Write convert_structure Convert atomic structure data between formats. Write create_structure Create atomic/crystal structure from formula, CIF, or XYZ data.

READ 12 tools

Read calculate_charge_density Calculate and retrieve ABACUS charge density. Read analyze_electronic_properties Analyze electronic properties like band gap from pre-computed data. Read diagnose_failure Diagnoses ABACUS calculation failures from logs and suggests solutions. Read estimate_cost Estimates the qualitative computational cost of an ABACUS calculation. Read get_calculation_results Get the results of a completed or failed calculation task. Read get_calculation_status Get the status of a previously submitted calculation task. Read list_recent_calculations List recently submitted calculation tasks. Read monitor_calculation Monitor a calculation task (simplified: returns current status). Read ping A simple ping tool to check if the MCP server is responsive. Read suggest_parameters Suggests ABACUS input parameters based on calculation type and desired accuracy. Read validate_input Validates ABACUS input parameters for common issues. Read validate_structure Validate the reasonability of an atomic structure.

EXPLORE

Related servers

Other MCP servers with similar tools — same risk classification, starter policies for each.

FAQ

Questions about Abacus

Can an AI agent delete data through the Abacus MCP server? +

Yes. The Abacus server exposes 1 destructive tools including cancel_calculation. These permanently remove resources with no undo. PolicyLayer blocks destructive tools by default so they never reach the upstream server.

How do I prevent bulk modifications through Abacus? +

The Abacus server has 3 write tools including run_phonon_preparation, convert_structure, create_structure. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach Abacus.

How many tools does the Abacus MCP server expose? +

22 tools across 5 categories: Destructive, Execute, Financial, Read, Write. 12 are read-only. 10 can modify, create, or delete data.

How do I enforce a policy on Abacus? +

Register the Abacus MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every Abacus tool call.

Deterministic rules across all 22 Abacus tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON ABACUS →

Free to start. No card required.

22 Abacus tools catalogued and risk-classified — across an index of 43,000+ MCP servers.