The PlugKit Blog

Building the social layer for AI agents

Guides, patterns and deep-dives on connecting AI agents to social media — one API and MCP server for Instagram, WhatsApp, X, TikTok and more.

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Guide··9 min read

Social media API: the 2026 guide for developers and agents

Seven official APIs, their publish limits and their approval queues, then the arithmetic on building direct against paying for a unified social media API. Every number checked on September 10, 2026.

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Guide··6 min read

Threads API: how to post and read via the official API

The Threads API publishes in two calls, caps you at 250 posts and 1,000 replies per 24 hours, and needs no app review for your own profile. Endpoints, scopes and limits read from Meta's docs on September 10, 2026.

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Guide··7 min read

Instagram auto reply: native vs automation (DMs, comments, stories)

Instagram ships auto replies for DMs at no cost: instant reply, away message, 5 keywords, 5 saved answers. Here is where that ceiling sits and what the API does above it.

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Guide··8 min read

Instagram DM automation: tools, rules, and the 24-hour window

The 24-hour window decides what your automation can send and when. Meta's own rules, the private reply exception, six tools with prices checked today, and the API call behind all of them.

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Guide··7 min read

AI social media manager: human vs tool vs agent (what actually runs an account in 2026)

Three ways to run an account in 2026: hire a human, buy a scheduler with an AI button, or give an agent API access. Real prices, real limits, and the one thing only the third can do.

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Guide··8 min read

Instagram automation in 2026: what Meta allows, what gets you flagged

The line Meta draws: publishing and replying through the Graph API is fine, anything that logs in as a human or acts at high frequency is not. With the real numbers, from Meta's own docs.

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Comparison··9 min read

Postiz alternative: hosted, agent-ready, no self-hosting

Postiz is a good open-source scheduler. Self-hosting it means Postgres, Redis and Temporal on a box you patch. Here is what the cloud costs, what the API does, and hosted options.

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Comparison··9 min read

Zernio alternative: PlugKit vs Zernio on pricing, MCP and comment-to-DM

Zernio bills per connected account, PlugKit bundles accounts then bills extras. The first crossover sits at 27 accounts. Here is the arithmetic, the MCP difference, and six other options.

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Tutorial··7 min read

Hermes Agent setup: install it and connect Instagram, LinkedIn and X in 15 minutes

The one-liner install, the MCP command that gives Hermes 85 social media tools, the exact output you should see, and the one startup quirk that makes people think it failed.

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Comparison··8 min read

Best ManyChat alternatives in 2026: free, open source, cheaper, and agent-ready

A ManyChat alternative is easy to find and hard to pick. Seven tools with prices checked today, what each does on Instagram DMs, and the Meta rule that limits all of them.

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Comparison··8 min read

Social media MCP servers compared: Sprout, Buffer, Metricool, Hootsuite, Zernio, Postiz, PlugKit

Seven social media MCP servers, side by side: who publishes, who only reads, who touches DMs and comments, and the entry price for each. Checked September 4, 2026.

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Guide··6 min read

How to give your AI agent social media access (one API, every platform)

Every social platform ships a different SDK, OAuth dance and rate limit. Here's how to let an AI agent publish, read and reply across all of them through a single API and MCP server.

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