list_repository_branches

THE RISK

Low Risk

Why list_repository_branches needs a policy

This tool queries and returns information about repository branches without modifying, creating, or deleting any data. It is a straightforward read operation consistent with listing/fetch patterns that have no capability to alter state or trigger external operations.

From the tool's definition Tool name 'list_repository_branches' and description 'List branches in a repository' indicate a data retrieval operation with no side effects.

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

POLICY

How to control list_repository_branches

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_repository_branches": {}
  }
}

list_repository_branches is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register AtomGit 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.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 22 AtomGit MCP Server tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about list_repository_branches

What does the list_repository_branches tool do? +

List branches in a repository. It is categorised as a Read tool in the AtomGit MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_repository_branches? +

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

What risk level is list_repository_branches? +

list_repository_branches is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_repository_branches? +

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

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

list_repository_branches is provided by the AtomGit MCP Server MCP server (kaiyuanxiaobing/atomgit-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 AtomGit MCP Server tool call.

Start from AtomGit 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 →