PostSider vs Ayrshare vs Postiz: API, MCP, pricing and human review

This is a comparison published by PostSider. We have an incentive to make our product look good, so the test is simple: can we describe the situations where Ayrshare or Postiz is the better choice, without pretending that they lack features they clearly offer?

All prices and features below are the vendors’ published claims checked on November 3, 2026, not verified contractual quotes or a hands-on benchmark. Always check the linked pricing before buying. We are comparing three different products for one specific problem: how do I give software or an AI agent controlled access to social publishing?

First, what the products actually are

PostSider is a hosted scheduling workspace with a calendar, channel integrations, team workflows and developer access through REST, a Node SDK and hosted/local MCP. A human can inspect what their agent saves. This is our product; the MCP developer quickstart is a practical way to test the claim.

Ayrshare is a social API platform aimed at products serving their own customers. Its pricing unit is a social profile, for example, one customer’s connected accounts across supported networks. It has moderation, analytics and developer-facing capabilities beyond basic scheduled posts. The Ayrshare API is attractive when your SaaS needs to operate many independent customer identities rather than one shared calendar.

Postiz is an agent-oriented social scheduling platform with a visual calendar, public API, webhooks, a hosted MCP server with OAuth, a CLI, AI-assisted features and a self-hosting option. Postiz openly supports agents such as Claude and Codex. It would be misleading to present PostSider as the only scheduler with MCP.

The pricing models answer different questions

As advertised on November 3, 2026:

• PostSider: Standard $20/month for five channels; Team $35/month for ten, with additional collaboration/approval features depending on plan. Higher plans scale up channel capacity. See PostSider pricing.
• Postiz: Standard $29/month for five channels, Team $39/month for ten, Pro $49/month for thirty, Ultimate $99/month for one hundred. Its Standard plan includes MCP, API and webhooks, plus additional AI/editor functionality. Source: Postiz official pricing.
• Ayrshare: Premium $149/month for one social profile, Launch $299/month for up to ten social profiles, Business from $599/month with thirty included. One social profile can cover multiple connected networks for one customer/brand; volume rates decline at larger scales. Source: Ayrshare official pricing.

These are not apples-to-apples prices. One Ayrshare profile can contain many network accounts. One PostSider/Postiz channel is an individual connected account. Comparing “one profile” directly with “one channel” without noting this distinction would be deceptive. The correct comparison depends on how many customers, brands and social accounts you manage.

AI agent support: do not compare slogans

PostSider’s hosted MCP endpoint is `https://mcp.postsider.com/mcp\`. Compatible clients authenticate with OAuth; local stdio and REST are different setup modes. A safe first check is to list real channels, create one explicitly approved draft, then read the saved post back by its returned ID. Start with the Claude walkthrough or Codex setup.

Postiz also publishes an MCP server guide for hosted OAuth access, alongside its CLI and agent integrations. If your workflow benefits from a combined AI editor, agent integrations and social calendar, Postiz deserves a serious trial.

Ayrshare has an API-first interface for customer-profile operations. For embedding social features within a multi-tenant SaaS, look closely at its profile isolation, customer-facing integrations, moderation and commercial terms. Do not choose a service based on an MCP endpoint count alone.

None of these integrations removes the need to review social-network permissions. A prompt asking an agent to pause is not equivalent to a permission scope, formal approval or proof of publication.

Which one would we choose?

Choose Ayrshare when you are building a multi-tenant product

If you run a SaaS where hundreds of customers connect independent branded social profiles and you need an API abstraction with broad customer-profile support, Ayrshare is an obvious candidate. Check the number of profiles, which networks need advanced moderation, API limits, and commercial support. Budget against your actual active customer profiles, not just today’s team seat count.

Why not PostSider in that situation? A shared calendar and a channel-based plan may be the wrong commercial or isolation model for a product embedding accounts for hundreds of external customers.

Choose Postiz when its editor, agent toolkit or self-hosting matters

Postiz combines the scheduler, AI-assisted content workflows, hosted MCP and CLI. It has a publicly documented self-hosting option. If you want those AI/media features or need to deploy on infrastructure you control, assess Postiz first.

Why not PostSider? If AI creation and built-in media workflows are core requirements, PostSider’s focus on connecting your own agents may not be the right fit. We don’t claim Postiz lacks MCP, SDK or webhooks.

Consider PostSider when you need a smaller hosted publishing surface with control

Our strongest use case is a solo builder, automation team or small agency that already has Claude, Codex or n8n and needs to give it a reliable publishing bridge while keeping visibility in one dashboard. Our starting plan is less expensive than the hosted Postiz entry tier, but price alone doesn’t establish feature superiority.

Try the smallest verifiable action before deciding: list channels, save a draft, read it back and inspect it in the calendar. For n8n, use the manual verified-draft workflow. Human approval workflows require the appropriate plan and configuration; do not assume all accounts have the same enforced approval gate.

The evaluation checklist we’d use even if PostSider lost

Ask each vendor to demonstrate the same sequence on a test account:

1. Connect one social channel; inspect what the app and agent are authorized to do.
2. Have the agent propose a draft; require a human to confirm the exact text and destination.
3. Create one draft; read it back by ID and compare the saved status to the agent’s claim.
4. If you need approval, test an actual reviewer decision and permission boundary, not just a prompt.
5. Simulate a retry with an idempotency key and a failed downstream publishing attempt. Check error states.
6. Compare your real cost for ten accounts across two customer brands, then model growth to 50 and 200 customers.

If the result isn’t verifiable, that’s a product gap regardless of the logo.

Sources and transparency

Vendor references checked November 3, 2026: PostSider plans, PostSider developer setup, Postiz pricing, Postiz MCP, Ayrshare pricing. This article is not sponsored by the competitors. Any price/feature claims here may change; we have not run a timed side-by-side integration benchmark or audited their private internals.