list_skills

Browse live and market skills. Sort by downloads to see what agents actually use.

SERVER123skills SOURCE123skills-mcp

Low RISK CLASS

Category Read

Parameters 20 required

Recommended Allowedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/123skills-mcp/list-skills.md

WHAT IT DOES

What list_skills does on 123skills

AI agents call list_skills to retrieve information from 123skills without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`sort`	string	—
`category`	string	—

Parameters from the server's own tool schema.

RISK

Why list_skills is rated Low

Even though list_skills only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_skills safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 123skills, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_skills, this is the rule to start with:

list_skills Allowed

list_skills is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_skills": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect 123skills, apply this rule, and every list_skills call is checked against it from then on.

FAQ

Questions about list_skills

What does the list_skills tool do? +

Browse live and market skills. Sort by downloads to see what agents actually use. It is categorised as a Read tool in the 123skills MCP Server, which means it retrieves data without modifying state.

What parameters does list_skills accept? +

list_skills accepts 2 parameters: sort, category. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on list_skills? +

Register the 123skills MCP server in PolicyLayer and add a rule for list_skills: 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 123skills. Nothing to install.

What risk level is list_skills? +

list_skills is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_skills? +

Yes. Add a rate_limit block to the list_skills 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 list_skills completely? +

Set action: deny in the PolicyLayer policy for list_skills. 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 list_skills? +

list_skills is provided by the 123skills MCP server (123skills-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on 123skills, and thousands of servers like it.

This server

All 12 123skills tools →

Across the catalogue

list_symbols on ACE-MCP →aiva_list_affiliates on AIVA MCP Server → The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →