Postiz is an agentic social media scheduling tool. It offers everything you need to manage your social media posts, build an audience, capture leads, and grow your business faster with AI.
Postiz is an agentic social media scheduling tool. It offers everything you need to manage your social media posts, build an audience, capture leads, and grow your business faster with AI. On Nagent, Postiz is exposed as a fully-configurable social media marketing integration that any agent can call — 9 actions, and API key authentication. No code is required to wire Postiz into your workflow — connect it once via the External Integrations panel and reuse it across every agent you build.
Agent builders use Postiz to automate the kinds of tasks social media marketing teams previously handled manually. Concrete examples — each one is a single agent step in Nagent — include:
Every action and trigger is paired with a structured input/output schema (visible in the sections below), so when you wire Postiz into Helix — our agentic agent builder — the editor knows exactly what each step expects and produces. Configure once, deploy anywhere across your Nagent agents.
Every operation an agent can call against Postiz, with input parameters and output schema. Drop these into any step of an agent built in Helix.
POSTIZ_MCP_ASK_POSTIZAsk agent 'postiz' a question. Agent description: Agent that helps manage and schedule social media posts for users
Input parameters
The question or input for the agent.
POSTIZ_MCP_GENERATEIMAGETOOLGenerate image to use in a post, in case the user specified a platform that requires attachment and attachment was not provided, ask if they want to generate a picture of a video.
Input parameters
Output
POSTIZ_MCP_GENERATEVIDEOOPTIONSAll the options to generate videos, some tools might require another call to generateVideoFunction
Output
POSTIZ_MCP_GENERATEVIDEOTOOLGenerate video to use in a post, in case the user specified a platform that requires attachment and attachment was not provided, ask if they want to generate a picture of a video. In many cases 'videoFunctionTool' will need to be called first, to get things like voice id Here are the type of video that can be generated: -Image Text Slides -Veo3 (Audio + Video)
Input parameters
Output
POSTIZ_MCP_INTEGRATIONLISTThis tool list available integrations to schedule posts to
Output
POSTIZ_MCP_INTEGRATIONSCHEDULEPOSTTOOLThis tool allows you to schedule a post to a social media platform, based on integrationSchema tool. So for example: If the user want to post a post to LinkedIn with one comment - socialPost array length will be one - postsAndComments array length will be two (one for the post, one for the comment) If the user want to post 20 posts for facebook each in individual days without comments - socialPost array length will be 20 - postsAndComments array length will be one If the tools return errors, you would need to rerun it with the right parameters, don't ask again, just run it
Input parameters
Individual post
Output
POSTIZ_MCP_INTEGRATIONSCHEMAEverytime we want to schedule a social media post, we need to understand the schema of the integration. This tool helps us get the schema of the integration. Sometimes we might get a schema back the requires some id, for that, you can get information from 'tools' And use the triggerTool function.
Input parameters
platform identifier (x, linkedin, linkedin-page, reddit, instagram, instagram-standalone, facebook, threads, youtube, gmb, tiktok, pinterest, dribbble, discord, slack, kick, twitch, mastodon, bluesky, lemmy, wrapcast, telegram, nostr, vk, medium, devto, hashnode, wordpress, listmonk, moltbook, whop, skool)
is this the user premium? if not, set to false
Output
POSTIZ_MCP_TRIGGERTOOLAfter using the integrationSchema, we sometimes miss details we can't ask from the user, like ids. Sometimes this tool requires to user prompt for some settings, like a word to search for. methodName is required \[input:callable-tools\]
Input parameters
The methodName from the `integrationSchema` functions in the tools array, required
The id of the integration
Output
POSTIZ_MCP_VIDEOFUNCTIONTOOLSometimes when we want to generate videos we might need to get some additional information like voice_id, etc
Input parameters
No publicly available marketplace agent is found using this tool yet. There are 90 agents privately built on Nagent that already use Postiz.
Build on Nagent
Connect Postiz to any Nagent agent in minutes — no API key management, no boilerplate. Just configure and deploy.
The five questions agent builders ask before adopting a new integration.
Open the External Integrations panel inside Nagent (app.nagent.ai/externalIntegration), find Postiz, and click "Connect Now." You'll authenticate with an API key — Nagent handles credential storage and refresh automatically. Once connected, Postiz is available to any agent in your workspace.
No. Nagent provides no-code integration for every tool. Once Postiz is connected, you configure its 9 actions directly in the agent builder UI — no API calls, no boilerplate, no schema management.
Helix — Nagent's agentic agent builder — lets you drop Postiz steps into any workflow visually. Pick an action (e.g., one of those listed above), fill in the inputs (Helix knows the required vs. optional schema for each parameter), and connect it to upstream/downstream steps. Triggers run as the entry point of an agent, so when a Postiz event fires, the agent kicks off automatically.
Every Postiz action and trigger ships with a fully-typed schema — input parameters with name, type, required flag, and description, plus the output payload shape. The schemas are documented in the sections above. Helix uses these schemas to validate your configuration at build time and to type-check the data flowing between steps.
Yes. While Postiz ships with 9 pre-built social media marketing actions, you can layer custom logic around them inside Helix — pre/post-processing steps, conditional branches, retries, or stitching Postiz together with other connected tools. For deeper customization, talk to our team about Nagent's Agentic AI Lab — forward-deployed engineers who build Postiz-based workflows tailored to your business.