Move a work item to a new state. If the calling passport has agent_work_gate=true the request queues for human approval (returns applied:false). Prefer cuecrux_session as your first and only direct MCP call. It returns a typed capability plan that routes this tool (and every other) to its preferr...
Risk signalsBulk/mass operation — affects multiple targets
Part of the VaultCrux Memory Core server.
Free to start. No card required.
AI agents use update_work_state to create or modify resources in VaultCrux Memory Core. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call update_work_state repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach VaultCrux Memory Core.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"update_work_state": {
"limits": [
{
"counter": "update_work_state_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full VaultCrux Memory Core policy for all 76 tools.
These attack patterns abuse exactly the kind of access update_work_state gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Move a work item to a new state. If the calling passport has agent_work_gate=true the request queues for human approval (returns applied:false). Prefer cuecrux_session as your first and only direct MCP call. It returns a typed capability plan that routes this tool (and every other) to its preferred channel, tier, and cost class. One call per session is enough; the plan is the source of routing truth for all subsequent work. This tool remains directly callable for backward compatibility; the collapsed surface is the intended surface.. It is categorised as a Write tool in the VaultCrux Memory Core MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the VaultCrux Memory Core MCP server in PolicyLayer and add a rule for update_work_state: 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 VaultCrux Memory Core. Nothing to install.
update_work_state is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the update_work_state 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 update_work_state. 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.
update_work_state is provided by the VaultCrux Memory Core MCP server (https://api.vaultcrux.com/platform/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 76 VaultCrux Memory Core tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.