idle_until_all_done
[MAINTENANCE] PARALLEL COORDINATION (d3a3a01d): non-blocking barrier check across sibling sessions. Returns {all_done, pending, statuses}; a session is done when closed/archived/missing. The server can't block, so poll until all_done is true — the A2A 'wait for X, Y, Z to finish' primitive. Persi...
This record as markdown: /tools/io-github-ajc3xc-meridian/idle-until-all-done.md
What idle_until_all_done does on Meridian
AI agents call idle_until_all_done to permanently remove resources in Meridian, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
| Parameter | Type | Required | Description |
|---|---|---|---|
session_ids | array | Yes | Sessions to wait on. |
Parameters from the server's own tool schema.
Why idle_until_all_done is rated Critical
An AI agent that decides to call idle_until_all_done doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from Meridian is gone. There is no undo for destructive operations.
Attacks that exploit this kind of access
The rule that runs idle_until_all_done safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Meridian, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For idle_until_all_done, this is the rule to start with:
idle_until_all_done is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Meridian, apply this rule, and every idle_until_all_done call is checked against it from then on.
Questions about idle_until_all_done
[MAINTENANCE] PARALLEL COORDINATION (d3a3a01d): non-blocking barrier check across sibling sessions. Returns {all_done, pending, statuses}; a session is done when closed/archived/missing. The server can't block, so poll until all_done is true — the A2A 'wait for X, Y, Z to finish' primitive. Persistent-state disclosure: on hosted Meridian, supplied text and project/session metadata -- including task log entries, pinned decisions, sprint items, notes, handoff/goal state, and HITL queue items -- are sent to and stored in Meridian's service, in an isolated per-tenant Postgres database (Neon); self-hosted deployments keep the same categories in the configured local SQLite/Postgres database. This data is visible in the dashboard and API, and may resurface in later project context or handoffs. Notes and pinned decisions can be deleted individually; task log entries and sprint items can be deleted via the dashboard/API (not exposed as an agent-facing tool); HITL queue items and handoff state have no per-record delete. Full removal of any of this data is available via project or account deletion, using the documented controls. Do not include secrets. It is categorised as a Destructive tool in the Meridian MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
idle_until_all_done accepts 1 parameter: session_ids. Required: session_ids. The full parameter table on this page comes from the server's own tool schema.
Register the Meridian MCP server in PolicyLayer and add a rule for idle_until_all_done: 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 Meridian. Nothing to install.
idle_until_all_done is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the idle_until_all_done 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 idle_until_all_done. 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.
idle_until_all_done is provided by the Meridian MCP server (@meridianmcp/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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