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Webhooks and MCP

The MCP server

The MCP server at /v1/mcp offers the free tools with no credential and every tool with a key. An assistant lists accounts, writes and schedules posts and reads results, with the permissions of the member who connected it. Tools that cancel or reply need confirm: true.

Also:MCP sign-in with OAuthThe free tools over the APIAPI authentication and keys

Updated 2026-10-26

Connect

  • With a key: send it to /v1/mcp as a bearer token.
  • With OAuth: connect to /v1/mcp/oauth and sign in; see MCP authentication.
  • With nothing: call the free tools only.

What the assistant can and cannot do

It acts with the role of the member behind the grant, so a contributor's posts still go to review. Approving needs the owner's approval switch. 1Post never writes for the assistant: it publishes what the assistant sends.

Setup pages for each assistant client are under assistants, and posting examples for each network are under developers.

Try it

Start a trial

7-day trial for $1. Connect your accounts and schedule a week of posts in one sitting.

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Free in your browser

Free tools

Count characters the way each network does, split threads and preview posts. No account needed.

Open the tools
For builders

API and MCP

Post to every network from your own code or assistant with one key, signed webhooks and idempotent requests.

See the API

Questions

Is MCP included in every plan?

Yes. The API, the MCP server and webhooks are on every plan.

MCP sign-in with OAuth: 1Post docsThe free tools over the API: 1Post docsAPI authentication and keys: 1Post docs1Post docs: composer, scheduling, API, webhooks, MCP

From one post to every feed

Plan the week in one sitting, keep your team in the loop, and let 1Post publish on time while you get on with the rest of your day.

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