skill_delete

Delete a skill. Only managed and workspace skills can be deleted (not bundled).

SERVERCoWork OS SOURCECoWork-OS/CoWork-OS

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/cowork-os/skill-delete.md

WHAT IT DOES

What skill_delete does on CoWork OS

AI agents call skill_delete to permanently remove resources in CoWork OS, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why skill_delete is rated Critical

The tool irreversibly deletes skills from the CoWork OS system. While scoped to certain skill types (managed and workspace, excluding bundled), deletion is inherently irreversible and cannot be undone.

From the tool's definition Tool description states: 'Delete a skill' - an irreversible deletion operation. Qualifier 'Only managed and workspace skills can be deleted' confirms the tool performs permanent removal of data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs skill_delete 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 skill_delete, this is the rule to start with:

skill_delete Hidden

skill_delete is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "skill_delete"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect CoWork OS, apply this rule, and every skill_delete call is checked against it from then on.

FAQ

Questions about skill_delete

What does the skill_delete tool do? +

Delete a skill. Only managed and workspace skills can be deleted (not bundled). It is categorised as a Destructive tool in the CoWork OS MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on skill_delete? +

Register the CoWork OS MCP server in PolicyLayer and add a rule for skill_delete: 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.

What risk level is skill_delete? +

skill_delete is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit skill_delete? +

Yes. Add a rate_limit block to the skill_delete 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.

How do I block skill_delete completely? +

Set action: deny in the PolicyLayer policy for skill_delete. 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.

What MCP server provides skill_delete? +

skill_delete 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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