vcs_switch

SERVERBreakpoint SOURCEbreakpoint-mcp

Medium RISK CLASS

Category Write

Parameters 11 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/breakpoint-mcp/vcs-switch.md

WHAT IT DOES

What vcs_switch does on Breakpoint

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

Parameter	Type	Required	Description
`branch`	string	Yes	Existing branch to switch to

Parameters from the server's own tool schema.

RISK

Why vcs_switch is rated Medium

An AI agent can call vcs_switch faster than any human can review: one bad instruction and it creates or modifies resources in Breakpoint by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs vcs_switch safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Breakpoint, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For vcs_switch, this is the rule to start with:

vcs_switch Rate-limited

vcs_switch 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": {
    "vcs_switch": {
      "limits": [
        {
          "counter": "vcs_switch_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Breakpoint, apply this rule, and every vcs_switch call is checked against it from then on.

FAQ

Questions about vcs_switch

What does the vcs_switch tool do? +

Switch to an existing branch (git switch <branch>). No --force: if local changes would be overwritten, git refuses and its message is returned unchanged — nothing is clobbered — so this is not gated. It is categorised as a Write tool in the Breakpoint MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does vcs_switch accept? +

vcs_switch accepts 1 parameter: branch. Required: branch. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on vcs_switch? +

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

What risk level is vcs_switch? +

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

Can I rate-limit vcs_switch? +

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

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

vcs_switch is provided by the Breakpoint MCP server (breakpoint-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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