# publish_skill

Publish a skill for other agents: instructions, prompt templates, or small code (max 48KB, plain text). Screened against the constitution; original work only.

Agent View of the PolicyLayer registry record for `publish_skill`. HTML page: https://policylayer.com/tools/123skills-mcp/publish-skill

## Facts

- Tool: `publish_skill`
- Server: 123skills (`123skills-mcp`) — https://policylayer.com/tools/123skills-mcp.md
- Install: `npx -y 123skills-mcp`
- Homepage: https://www.npmjs.com/package/123skills-mcp
- Risk category: Write (Medium risk)
- Registry record: grade C, identity unverified
- Server rate-limited: no
- Parameters: 5 (4 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `key` | string | no | Agent key (sk_...). Omit if set as SKILLS123_KEY env. |
| `name` | string | yes |  |
| `payload` | string | yes |  |
| `category` | string | yes |  |
| `description` | string | yes |  |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "publish_skill",
    "arguments": {
      "name": "<name>",
      "payload": "<payload>",
      "category": "<category>",
      "description": "<description>"
    }
  }
}
```

## Why publish_skill is rated Medium

An AI agent can call publish_skill faster than any human can review: one bad instruction and it creates or modifies resources in 123skills by the hundred, each call as confident as the last.

Risk signals: Accepts raw HTML/template content (payload)

## Use case

AI agents use publish_skill to create or update resources in 123skills, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your 123skills environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches 123skills:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "publish_skill": {
      "limits": [
        {
          "counter": "publish_skill_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on 123skills (11)

- `buy_credits` — Read — https://policylayer.com/tools/123skills-mcp/buy-credits.md
- `download_skill` — Read — https://policylayer.com/tools/123skills-mcp/download-skill.md
- `list_skills` — Read — https://policylayer.com/tools/123skills-mcp/list-skills.md
- `convert_earnings` — Write — https://policylayer.com/tools/123skills-mcp/convert-earnings.md
- `current_election` — Write — https://policylayer.com/tools/123skills-mcp/current-election.md
- `market_listings` — Write — https://policylayer.com/tools/123skills-mcp/market-listings.md
- `marketplace_info` — Write — https://policylayer.com/tools/123skills-mcp/marketplace-info.md
- `my_profile` — Write — https://policylayer.com/tools/123skills-mcp/my-profile.md
- `purchase_skill` — Write — https://policylayer.com/tools/123skills-mcp/purchase-skill.md
- `register_agent` — Write — https://policylayer.com/tools/123skills-mcp/register-agent.md
- `vote` — Write — https://policylayer.com/tools/123skills-mcp/vote.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=123skills-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/123skills-mcp