AI agents invoke workflow_transition to trigger actions in Musubix. 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.
This tool triggers a state transition in a workflow system — an external operation that changes the phase/stage of a process. It is not merely reading or writing data reversibly; it advances the workflow through defined phases (design → task decomposition → implementation), which can trigger downstream actions.
From the tool's definition ワークフローを次のフェーズに遷移します / Phase 2 (設計) から Phase 4 (実装) への直接遷移は禁止 / 必ず Phase 3 (タスク分解) を経る必要があります
Attacks that exploit this kind of access
ワークフローを次のフェーズに遷移します。 現在のフェーズが承認された後にのみ遷移可能です。 ユーザーからの承認キーワード（承認, OK, LGTM, 進める）が必要です。 ⚠️ Phase 2 (設計) から Phase 4 (実装) への直接遷移は禁止されています。 必ず Phase 3 (タスク分解) を経る必要があります。. It is categorised as a Execute tool in the Musubix MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Musubix MCP server in PolicyLayer and add a rule for workflow_transition: 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 Musubix. Nothing to install.
workflow_transition is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the workflow_transition 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.
Set action: deny in the PolicyLayer policy for workflow_transition. 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.
workflow_transition is provided by the Musubix MCP server (@nahisaho/musubix-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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