write_bp_program · UOFast MCP: Risk & Policy

WHAT IT DOES

What write_bp_program does on UOFastMCP

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

WHY IT NEEDS A POLICY

Why write_bp_program needs a policy

This tool falls under Write category as it creates or modifies data (BP program source code) reversibly—the changes can be undone or overwritten. Severity is high because: (1) UniData/UniVerse databases are typically used in critical enterprise systems, (2) malicious BP programs could access or manipulate database records, run arbitrary logic, or interfere with business operations, and (3) an AI agent could inject…

From the tool's definition Tool explicitly 'Creates or overwrites the program' source code in a UniData BP file, which is a reversible modification operation. The use of 'write' and 'creates or overwrites' confirms data modification capability.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

write_bp_program Rate-limited

write_bp_program 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": {
    "write_bp_program": {
      "limits": [
        {
          "counter": "write_bp_program_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about write_bp_program

What does the write_bp_program tool do? +

Write source code to a UniData BP (Basic Program) file. Creates or overwrites the program. It is categorised as a Write tool in the UOFastMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on write_bp_program? +

Register the UOFast MCP server in PolicyLayer and add a rule for write_bp_program: 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 UOFastMCP. Nothing to install.

What risk level is write_bp_program? +

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

Can I rate-limit write_bp_program? +

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

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

write_bp_program is provided by the UOFast MCP server (rokipark/uofastmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.