Discord MCP server: let Claude or any agent post to your Discord channel

Set it up and post, step by step

1. Add PostWire's MCP server to your agent

   In Claude, open PostWire in the connector directory and press Connect. Anywhere else, add the remote server https://postwire.io/api/mcp (Streamable HTTP; OAuth sign-in or an API key) — in Claude Code: claude mcp add --transport http postwire https://postwire.io/api/mcp. Cursor, VS Code, Windsurf, Codex and Gemini CLI configs: MCP client configs.

2. Sign in with your email

   The first time the agent uses a PostWire tool, a sign-in window asks for your email and a 6-digit code; that also creates a free PostWire account if you have none. No password and no card. Agents that cannot do OAuth send an API key instead (dashboard → API & MCP → Copy key).

3. Copy the channel's webhook URL

   In Discord, open the channel → Edit Channel → Integrations → Webhooks → New Webhook → Copy Webhook URL. You need permission to manage that channel (server owner or admin). The link looks like https://discord.com/api/webhooks/<id>/<token>.

4. Connect Discord

   Ask "connect my Discord". create_connect_link gives you a one-hour link; choose Discord there and paste the webhook URL — there is no sign-in screen. PostWire checks that the link is a Discord webhook and asks Discord whether it exists before saving it, so a link copied without its end is refused on the spot, not at the first post.

5. Let PostWire write the announcement

   "Write the Discord announcement for v2.3 and the LinkedIn post for it." generate_posts returns one draft per network and publishes nothing. Discord's draft is short and friendly, in a community tone, with emojis and links welcome; LinkedIn's is a first-person post with the hook up front.

6. Post it, or schedule it

   After you approve, the agent calls post_to_social (or schedule_post with a run_at time). To show an image or a video, pass its public https link as photo_url or video_url: PostWire puts the link on its own line under the text and Discord embeds it.

   {
     "name": "post_to_social",
     "arguments": {
       "platforms": ["discord", "linkedin"],
       "per_platform": {
         "discord": { "text": "🚀 v2.3 is out! Dark mode, faster sync and 14 fixes. Changelog: https://example.com/changelog" },
         "linkedin": { "text": "We shipped v2.3 today.\n\nThe one change I would point at …" }
       },
       "photo_url": "https://postwire.io/m/…/v2-3.png"
     }
   }

7. Check that it went out

   The result lists each network with ok and the id of the Discord message. list_scheduled_posts shows what is still queued and cancel_scheduled_post removes one before it goes out.

The same call from your own code or from a release pipeline: POST /api/post with {"platforms": ["discord"], "text": "…"} and your API key, or the PostWire node in n8n. Prefer to set it up by hand first? Open the dashboard, connect the account under Accounts and copy your key under API & MCP.