How to Let Hermes Agent or OpenClaw Post to Social Media

Yes, Hermes Agent and OpenClaw can post to social media. Connect either agent to PostPeer's social media MCP server and it can draft, schedule, and publish across X, LinkedIn, Instagram, and the rest.

Without that connection, the agent gets tangled in nine different APIs.

PostPeer gives them that last mile:

Hermes or OpenClaw → PostPeer MCP → your connected social accounts

The agent does the thinking. PostPeer keeps the account connections and handles scheduling and delivery.

It takes a few minutes to wire up.

Before you start

You need:

• A PostPeer access key
• At least one account on the Integrations page
• Hermes Agent or OpenClaw already running

Keep the access key private. Every example below uses YOUR_POSTPEER_API_KEY as a placeholder, not a real key.

Connect Hermes Agent

Hermes reads MCP servers from ~/.hermes/config.yaml. Put the key in ~/.hermes/.env first:

POSTPEER_API_KEY=YOUR_POSTPEER_API_KEY

Then add PostPeer under mcp_servers:

mcp_servers:
  postpeer:
    url: 'https://mcp.postpeer.dev/mcp'
    headers:
      Authorization: 'Bearer ${POSTPEER_API_KEY}'
    enabled: true

If you already have an mcp_servers section, add only the postpeer block. Do not create a second section with the same name.

Test the connection from your terminal:

hermes mcp test postpeer

If Hermes is already open, run /reload-mcp in the chat. Restarting Hermes works too. It should now see PostPeer actions for accounts, posts, scheduling, and analytics.

Connect OpenClaw

OpenClaw can save a remote Streamable HTTP MCP server from the command line:

openclaw mcp add postpeer \
  --url https://mcp.postpeer.dev/mcp \
  --transport streamable-http \
  --header "Authorization: Bearer YOUR_POSTPEER_API_KEY"

Check that OpenClaw can reach the server and discover its tools:

openclaw mcp doctor postpeer --probe

Reload the MCP registry if OpenClaw was already running:

openclaw mcp reload

OpenClaw saves this server definition in its local configuration. The header contains your key, so keep that file out of public repos, issues, and chat messages.

Try one safe workflow

Start by asking the agent which accounts it can use. I would not make the first test a live post. Finding out that it picked your personal X account after publishing is a lousy way to test an integration.

List my connected PostPeer accounts. Tell me the platform, account name, and account ID for each one. Do not create a post yet.

Check the result. If the X and LinkedIn accounts are right, give it a real source such as a changelog entry or blog URL:

Read this release note: [PASTE URL OR TEXT]. Write one X post and one LinkedIn post for the connected accounts I name. Keep the X version under 240 characters. Show me both drafts first. Do not publish immediately. After I approve the copy, schedule both posts for 10:00 AM tomorrow in Asia/Jerusalem and return the PostPeer post ID.

The agent can research and write, but it has to stop before posting. Only your approval lets it schedule the two drafts. That small pause catches bad links, invented claims, and the classic wrong-account mistake.

Open the PostPeer posts page and check the copy, accounts, time, and timezone. If something looks wrong, cancel or reschedule it while it is still in the queue.

If it does not work

• A 401 Unauthorized response usually means the PostPeer key is missing, mistyped, or not being passed in the Authorization header.
• If no PostPeer tools appear, run hermes mcp test postpeer or openclaw mcp doctor postpeer --probe, then reload or restart the agent.
• If the agent chooses the wrong account, ask it to list integrations again and name the exact account ID in your scheduling prompt.

MCP or Agent Skills?

Use MCP when you want the same PostPeer connection in Hermes Agent and OpenClaw. Both agents can connect to the hosted server and discover the available posting tools.

PostPeer also has installable Agent Skills. They are handy when an agent works mainly through shell commands or needs a repeatable API workflow. You do not need both for this setup. The full server reference is in the PostPeer MCP docs.

Create an access key, connect one test account, and schedule something boring for ten minutes from now. Check it in the queue. Cancel it if you want. Once that works, give the agent a real release note and have it prepare tomorrow's posts.