post_social_media · Personal Knowledge Assistant MCP

WHAT IT DOES

What post_social_media does on Personal Knowledge Assistant

AI agents use post_social_media to create or update resources in Personal Knowledge Assistant — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Personal Knowledge Assistant environment.

WHY IT NEEDS A POLICY

Why post_social_media needs a policy

This tool creates and modifies data (social media posts) on external platforms. While posts can be deleted, the act itself is a write operation. Severity is medium because misuse could damage reputation or spread misinformation, but the effects are not irreversible (posts can be deleted) and do not involve financial transactions or system-level code execution.

From the tool's definition Tool name 'post_social_media' and description 'Create and post content to various social media platforms' directly indicate creation and publication of content, which is a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

post_social_media Rate-limited

post_social_media 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "post_social_media": {
      "limits": [
        {
          "counter": "post_social_media_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Personal Knowledge Assistant, so you can run agents against it safely.

FAQ

Questions about post_social_media

What does the post_social_media tool do? +

Create and post content to various social media platforms with optimal timing. It is categorised as a Write tool in the Personal Knowledge Assistant MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on post_social_media? +

Register the Personal Knowledge Assistant MCP server in PolicyLayer and add a rule for post_social_media: 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 Personal Knowledge Assistant. Nothing to install.

What risk level is post_social_media? +

post_social_media is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit post_social_media? +

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

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

post_social_media is provided by the Personal Knowledge Assistant MCP server (vitalune/nexus-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.