complete_mention
Mark a mention as completed after finishing the requested work.
This record as markdown: /tools/cowork-os/complete-mention.md
What complete_mention does on CoWork OS
AI agents use complete_mention to create or update resources in CoWork OS, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your CoWork OS environment.
Why complete_mention is rated Medium
This tool creates or modifies data (updates a mention's completion status) in a reversible manner. The operation changes metadata about a mention without deleting data or executing external code. It is a Write operation with low severity because the blast radius of misuse is limited to marking mentions as complete, which can be undone by marking them incomplete again.
From the tool's definition Tool description states 'Mark a mention as completed', which is a state-change operation that modifies the status of a mention record.
Attacks that exploit this kind of access
The rule that runs complete_mention safely
PolicyLayer is an MCP gateway: it sits between your AI agents and CoWork OS, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For complete_mention, this is the rule to start with:
complete_mention stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect CoWork OS, apply this rule, and every complete_mention call is checked against it from then on.
Questions about complete_mention
Mark a mention as completed after finishing the requested work. It is categorised as a Write tool in the CoWork OS MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the CoWork OS MCP server in PolicyLayer and add a rule for complete_mention: 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 CoWork OS. Nothing to install.
complete_mention 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 complete_mention 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 complete_mention. 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.
complete_mention is provided by the CoWork OS MCP server (CoWork-OS/CoWork-OS). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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