device_reauth_start

Start Yaver re-auth on an owned remote machine through the existing /auth/recover path. auto picks the safest mode for the detected state: typically direct for auth-expired, pair for bootstrap.

SERVERYaver SOURCEyaver-cli

High RISK CLASS

Category Execute

Parameters 31 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-kivanccakmak-yaver/device-reauth-start.md

WHAT IT DOES

What device_reauth_start does on Yaver

AI agents invoke device_reauth_start to trigger actions in Yaver. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

Parameter	Type	Required	Description
`mode`	string	—	auto (default), direct, pair, or device-code.
`device_id`	string	Yes	Owned Yaver device ID, unique prefix, or exact device name.
`bootstrap_secret`	string	—	Optional legacy bootstrap secret for secret-based recovery when host-token recovery is not enough.

Parameters from the server's own tool schema.

RISK

Why device_reauth_start is rated High

This tool invokes an authentication recovery process on a remote device, which is an executable action with side effects that depend on the device's state. While not destructive or financial, it exercises control over a remote system's authentication state—a sensitive operation that could allow unauthorized access if misused.

From the tool's definition Tool initiates re-authentication on a remote machine, which triggers an external operation (starting an auth recovery flow).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs device_reauth_start safely

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

device_reauth_start Rate-limited

device_reauth_start stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "device_reauth_start": {
      "limits": [
        {
          "counter": "device_reauth_start_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about device_reauth_start

What does the device_reauth_start tool do? +

Start Yaver re-auth on an owned remote machine through the existing /auth/recover path. auto picks the safest mode for the detected state: typically direct for auth-expired, pair for bootstrap. It is categorised as a Execute tool in the Yaver MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

What parameters does device_reauth_start accept? +

device_reauth_start accepts 3 parameters: mode, device_id, bootstrap_secret. Required: device_id. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on device_reauth_start? +

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

What risk level is device_reauth_start? +

device_reauth_start is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit device_reauth_start? +

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

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

device_reauth_start is provided by the Yaver MCP server (yaver-cli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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