claim_docx_region
[MAINTENANCE] f7ee1ba7 — Model B scoped-region claiming for .docx files. Claim a specific paragraph/element by its durable element_id (the w14:paraId surfaced by get_document_structure / update_paragraph) so another session cannot overwrite it concurrently. Two sessions can hold NON-OVERLAPPING e...
This record as markdown: /tools/io-github-ajc3xc-meridian/claim-docx-region.md
What claim_docx_region does on Meridian
AI agents call claim_docx_region 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 |
|---|---|---|---|
file_path | string | Yes | The .docx source path (the same value as the `doc` arg to update_paragraph / ingest_document). |
element_id | string | Yes | The target element's durable id (w14:paraId or p{index} fallback) as surfaced by get_document_structure. |
session_id | string | Yes | The calling session. |
Parameters from the server's own tool schema.
Why claim_docx_region is rated Critical
An AI agent that decides to call claim_docx_region 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.
Risk signalsAccepts file system path (file_path)
Attacks that exploit this kind of access
The rule that runs claim_docx_region 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 claim_docx_region, this is the rule to start with:
claim_docx_region 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 claim_docx_region call is checked against it from then on.
Questions about claim_docx_region
[MAINTENANCE] f7ee1ba7 — Model B scoped-region claiming for .docx files. Claim a specific paragraph/element by its durable element_id (the w14:paraId surfaced by get_document_structure / update_paragraph) so another session cannot overwrite it concurrently. Two sessions can hold NON-OVERLAPPING element claims on the SAME file — the real precision benefit vs. a whole-file lock. An edit to a claimed element_id by another session is REJECTED structurally (not just advisory) at the update_paragraph level. A whole-file lock by another session blocks this claim. Returns {claimed: true, file_path, session_id, element_id} on success or {claimed: false, reason, message, conflicts} on conflict. 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.
claim_docx_region accepts 3 parameters: file_path, element_id, session_id. Required: file_path, element_id, session_id. 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 claim_docx_region: 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.
claim_docx_region 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 claim_docx_region 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 claim_docx_region. 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.
claim_docx_region 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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