post_to_linkedin

SERVERHermoso SOURCEhttps://app.hermoso.ai/mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/hermoso/post-to-linkedin.md

WHAT IT DOES

What post_to_linkedin does on Hermoso

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

RISK

Why post_to_linkedin is rated Medium

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

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs post_to_linkedin safely

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

post_to_linkedin Rate-limited

post_to_linkedin 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_to_linkedin": {
      "limits": [
        {
          "counter": "post_to_linkedin_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about post_to_linkedin

What does the post_to_linkedin tool do? +

Publish a post to the user’s connected LinkedIn profile — text, and optionally an image (pass its served URL as imageUrl). The image does NOT have to be something Hermoso generated: LinkedIn is served the bytes from us, so the URL must be Hermoso-hosted, and upload_file turns ANY file the user already has into exactly that. This PUBLISHES immediately and PUBLICLY — ALWAYS show the user the exact text and get an explicit yes BEFORE calling. Needs a connected LinkedIn account (Settings > Connectors > LinkedIn). It is categorised as a Write tool in the Hermoso 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_to_linkedin? +

Register the Hermoso MCP server in PolicyLayer and add a rule for post_to_linkedin: 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 Hermoso. Nothing to install.

What risk level is post_to_linkedin? +

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

Can I rate-limit post_to_linkedin? +

Yes. Add a rate_limit block to the post_to_linkedin 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_to_linkedin completely? +

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

post_to_linkedin is provided by the Hermoso MCP server (https://app.hermoso.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Hermoso, and thousands of servers like it.

This server

All 896 Hermoso tools →

Across the catalogue

team_manager_post_blackboard on Team Manager MCP → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →