Integrate Postonce with Mercury to automate workflows, sync data between apps, and eliminate repetitive tasks with AI-powered automation.
Request Money Transfer through Mercury when New Post Created in PostOnce
Get Payment Approval Request by ID from Mercury when New Post Created in PostOnce
Get Users from Mercury when New Post Created in PostOnce
Get Payment Approval Requests from Mercury when New Post Created in PostOnce
Get Cards from Mercury when New Post Created in PostOnce
Start from a real workflow other teams are already running.
Postonce
When this happens...
New Post Created
Mercury
Automatically do this!
Create Virtual Card
Get Recipients
Request Money Transfer
Send Payment to Recipient
Get Payment Approval Requests
Get Payment Approval Request by ID
Get Users
Get Accounts
Get Cards
Request Money Transfer through Mercury when New Post Created in PostOnce
Use this flowGet Payment Approval Request by ID from Mercury when New Post Created in PostOnce
Use this flowGet Users from Mercury when New Post Created in PostOnce
Use this flowGet Payment Approval Requests from Mercury when New Post Created in PostOnce
Use this flowGet Cards from Mercury when New Post Created in PostOnce
Use this flowGet Recipients from Mercury when New Post Created in PostOnce
Use this flowSend Payment to Recipient via Mercury when New Post Created in PostOnce
Use this flowGet Accounts from Mercury when New Post Created in PostOnce
Use this flowCreate Virtual Card in Mercury when New Post Created in PostOnce
Use this flowEverything you can automate between Postonce and Mercury.
When this happensTriggers
A trigger is an event that starts a workflow.
Runs when a new post is created. You can filter by account and set the lookback minutes.
Action is the task that follows automatically within your Postonce integrations.
Generate a signed upload URL for a media file by filename; MIME type is auto-detected from the filename extension.
Retrieve a media item's storage path and public URL using its media ID.
Create a post to selected accounts with content, media, scheduling, and platform-specific options.
Retrieve posts or a single post by ID. Leave limit blank to return all posts or set 1-100; supports after cursor.
Cancel a scheduled or pending post by Post ID without deleting its record or published content.
Publish a scheduled or draft Postonce post immediately by specifying the post ID.

Follow a simple walkthrough to create, test, and launch your first automation.
Connect your apps
Link the apps you want to automate.
Configure your workflow
Set up triggers, actions, and map your data.
Test & publish
Test your workflow and publish it.
Recognized by leading review platforms and trusted by 10,000+ businesses worldwide.
Just describe the task in plain English. viaSocket AI selects the right apps, builds the workflow, maps the fields, and prepares everything for review before you publish.

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PostOnce is a social media automation platform that enables creators, teams, and businesses to schedule and crosspost content across platforms including TikTok, Instagram, YouTube, Facebook, LinkedIn, X, Threads, Bluesky, and Pinterest.
Learn moreMercury is an online financial platform that helps startups grow and manage their capital.
Learn moreSign up for a free viaSocket account, then authorize both your Postonce and Mercury accounts. From there, pick a trigger in one app and an action in the other. Your first workflow can be live in under five minutes.
Yes. viaSocket uses instant triggers where available, so data moves between Postonce and Mercury as soon as the event happens. Scheduled polling triggers run at a maximum interval of 15 minutes.
Yes. You can map specific fields, apply filters to skip records that do not match your conditions, and transform values before they reach Mercury. No coding required.
Yes. You can set up a workflow where Postonce triggers actions in Mercury, and a separate workflow where Mercury triggers actions in Postonce. Both run independently and in real time.
viaSocket logs every run so you can see exactly what succeeded and what failed. Failed tasks can be retried from the dashboard without re-configuring the workflow.
Yes, there is a free plan that covers basic workflows between Postonce and Mercury. Paid plans unlock higher task limits, faster polling, and advanced features like multi-step workflows and conditional logic.
No. The entire Postonce and Mercury integration is built through a visual, point-and-click interface. Code blocks are available if you want them, but they are never required.