ollama_write_tests

THE RISK

Medium Risk

Why ollama_write_tests needs a policy

Generating unit tests produces new code artifacts that are written to disk or version control, making this a Write operation (creates/modifies data reversibly). The severity is medium because test generation is typically non-critical code that can be reviewed, edited, or deleted before deployment.

From the tool's definition Tool named 'ollama_write_tests' with description 'Generate unit tests for code using Ollama' — creates new test files/content that modifies the codebase.

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

POLICY

How to control ollama_write_tests

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "ollama_write_tests": {
      "limits": [
        {
          "counter": "ollama_write_tests_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

ollama_write_tests 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.

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

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Ollama MCP Server tools

Execute ollama_general_task Execute any general coding task using Ollama. Use this for tasks that don Execute ollama_fix_code Fix bugs or errors in code using Ollama. Provide the broken code and error details. Execute ollama_generate_code Generate code using Ollama. Use this for writing new functions, classes, or code snippets. Execute ollama_generate_code_with_context Generate code using Ollama with context from existing files. Reads reference files to unde Write ollama_refactor_code Refactor code to improve quality, readability, or structure using Ollama. Read ollama_analyze_files Analyze multiple files together using Ollama. Useful for understanding relationships betwe Read ollama_explain_file Explain a file by path using Ollama. The MCP server reads the file directly, reducing toke Read ollama_review_file Review a file by path using Ollama. The MCP server reads the file directly, reducing token

All 11 Ollama MCP Server tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about ollama_write_tests

What does the ollama_write_tests tool do? +

Generate unit tests for code using Ollama. It is categorised as a Write tool in the Ollama MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on ollama_write_tests? +

Register the Ollama MCP Server MCP server in PolicyLayer and add a rule for ollama_write_tests: 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 Ollama MCP Server. Nothing to install.

What risk level is ollama_write_tests? +

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

Can I rate-limit ollama_write_tests? +

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

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

ollama_write_tests is provided by the Ollama MCP Server MCP server (jadael/ollamaclaude). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Ollama MCP Server tool call.

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

CHECK YOUR STACK →