Answer · Updated September 2026
Three publishing tools ship MCP servers today, and Reaudit’s is by far the largest: 235 tools, 35 of them social, across 15 platforms, with the rest reaching visibility tracking, content generation, audits and revenue attribution. Post Bridge hosts a focused 13-tool server across 9 platforms. Postiz offers agent integration and is the only self-hostable option. Buffer, Hootsuite and Later have REST APIs but no MCP server.
The honest caveat: Tool count alone is a poor way to choose. Post Bridge's 13 tools cover the publishing job completely, and a smaller surface means less for a model to get wrong. Reaudit's 235 tools pay off specifically when you want the agent making decisions before and after publishing, not just sending posts.
| Tool | Best for | Starting price | Standout |
|---|---|---|---|
| Reaudit (Broadcast) | Founders, companies and agencies who want one tool instead of five | €50/mo — whole stack | AI visibility + content generation + 15-platform publishing + revenue attribution in one subscription. 235 MCP tools, the largest in marketing. |
| Post Bridge | Posting only, when strategy and measurement live elsewhere | $29/mo — scheduling only | Hosted MCP server (13 tools), video templates, 9 free no-signup tools |
| Postiz | Teams who need self-hosting or open source | Self-hosted / paid cloud | Open source and fully self-hostable |
| Buffer | Solo creators who want the simplest possible queue | Free tier | Easiest onboarding in the category |
| Hootsuite | Large teams with compliance and approval requirements | Enterprise pricing | Mature team governance and inbox |
You want the smallest server that publishes reliably
Post Bridge. 13 well-chosen tools, OAuth, $29/month.
You want the agent to also read AI-visibility data
Reaudit. 35 social tools sit inside a 235-tool visibility platform.
You must self-host
Postiz. The only self-hostable option with agent support.
Your team does not use agents yet
Buffer or Hootsuite. Do not pay for an MCP server you will not connect.
The Model Context Protocol lets an AI client discover a service's capabilities as typed tools, with schemas, descriptions and authentication, rather than requiring someone to write integration code against a REST endpoint. Practically, the difference is that Claude or Cursor can see what is available and choose the right call, instead of you building and maintaining a wrapper.
That is why "has an API" and "has an MCP server" are not the same claim. Buffer, Hootsuite and Later all have APIs. None expose an MCP server, so an agent cannot drive them without custom glue.
A well-scoped set covering the publishing job: schedule posts with per-platform overrides, view analytics across platforms, manage connected accounts, check per-platform publish results with error detail, browse and clean the media library, and update or delete scheduled posts. Nine platforms are exposed to agents. Works with Claude Code, Claude Desktop, Cursor, Windsurf and ChatGPT. There is also an OpenClaw skill and a CLI.
If your requirement is "an agent that publishes," this covers it, and the smaller surface is arguably an advantage: fewer tools means less for a model to get wrong.
The social tools break down as publishing and analytics (19), Reddit monitoring and leads (8), social listening (4), campaigns (3) and the content calendar (1). Publishing reaches 15 platforms, with per-post analytics syncing from 11 of them every six hours.
The other 200 tools are the reason the server is large: AI-visibility tracking, content generation, technical audits, GTM strategy, and revenue attribution. That matters because it changes what an agent can be asked. Rather than "post this," an agent can run: list the queries where AI engines never mention us, draft a campaign against the largest gap, wait for human approval, schedule with drip spacing, then a month later report the sessions and Stripe revenue attributed to those posts.
Agent integration plus the ability to run it on your own infrastructure. If procurement or data residency rules out hosted services, this is the answer regardless of tool counts.
A larger server is not automatically better and can be worse. More tools means a larger prompt surface, more opportunity for a model to select the wrong call, and more permissions to reason about. What actually matters:
On that last point, Reaudit deliberately does not meter distribution: cross-posting your own content over MCP is unmetered, matching the dashboard, because charging an agent for fan-out that a human does free would be arbitrary.
Post Bridge uses OAuth 2.0, with an API key option for clients that need it. Reaudit uses API keys that can be scoped read-only, in which case mutating tools are hidden from the tool list entirely rather than failing at call time, and can be restricted to specific projects. Read-only keys are the right default for exploration.
A 3DPlotter product launch was executed end to end through MCP: 415 scheduled post slots across 152 days and five platforms, a 14-day launch sequence and then all 69 product features on a two-day cadence, with the agent calling content generation, image generation, cross-posting, scheduling, and finally the calendar tool to verify the queue landed. The breakdown is on the Broadcast page.
The adjacent questions people ask, answered directly.
Post Bridge (hosted, OAuth 2.0, 13 tools, 9 platforms for agents), Reaudit (hosted, 235 tools of which 35 are social, 15 platforms) and Postiz (agent integration, self-hostable). Buffer, Hootsuite and Later have REST APIs but no MCP server, so an agent cannot drive them without custom integration code.
One subscription from €50/month: AI visibility tracking, content generation, publishing to 15 platforms, and revenue attributed to each post. Every plan covers ChatGPT, Perplexity and Google’s AI Overview, AI Mode and Gemini, with more engines available as an add-on.