Running an online reselling business often feels like a race against the clock. You spend endless hours relisting items, sending offers to likers, and crossposting across multiple marketplaces. This repetitive work steals the time you should be using to find new items to resell and grow your profits.
Most sellers are now looking for a smarter way to handle these boring daily chores. Reseller automation apps promise to take over the hard work so you can focus on making more money. One name that keeps popping up in every reselling group is Sidekick Tools.
Is the Sidekick Tools app really the secret weapon your reselling business needs, or is it just another monthly bill? We spent weeks testing every aspect of this app to see if it actually lives up to the hype. You deserve to know the truth before you spend your hard-earned profits on a new subscription.
What is Sidekick Tools?
Sidekick Tools is an all-in-one marketplace automation and crosslisting app designed specifically for resellers. Originally launched as a Poshmark-centric tool, it has evolved into a powerhouse that now supports 7 marketplaces, including:
- Poshmark
- eBay
- Mercari
- Depop
- Etsy
- WhatNot
- Grailed
Now, Sidekick Tools is both a crosslisting and reselling automation software, ideal for those marketplace resellers who manage mid-to-large inventories and want to automate repetitive tasks like sharing listings, following users, sending offers, relisting, and crosslisting items across multiple marketplaces in seconds.
What Does “Safe” Actually Mean for a Reseller Automation App?
To judge Sidekick Tools fairly, we have to define what “safety” looks like for a reseller automation app. It generally falls into four buckets:
- Account Safety: The risk of getting “shadowbanned,” put in “share jail,” or having your account suspended by the marketplace.
- Data Security: How the app handles your sensitive login credentials and personal information.
- Platform Compliance: Whether the tool respects the Terms of Service (TOS) of the platforms it operates on.
- Payment Safety: Ensuring your subscription and financial data are processed securely.
How Sidekick Tools Works (From a Safety Perspective)
Sidekick Tools doesn’t just “spam” the marketplaces. It uses a sophisticated cloud-based system that mimics human behavior. Here’s why that matters:
- Human-Like Behavior: Instead of firing off 500 shares in 60 seconds (a major red flag for Poshmark), Sidekick Tools uses randomized intervals and moderate speeds to simulate a real person clicking buttons.
- Cloud Usage: Because the automation happens on Sidekick Tools’ secure servers (not just a local script on your laptop), the service can run 24/7 without you needing to keep a browser tab open.
- Smart Limits: The Sidekick Tools app includes built-in safeguards to stay within the “unspoken” daily activity limits of marketplaces, helping you avoid the dreaded “Share Jail.”
Does Sidekick Tools Violate Marketplace Rules?
Let’s be direct: almost every marketplace, including Poshmark, Mercari, eBay, and Depop, officially states in their TOS that they “prohibit” the use of automation tools and bots.
However, there is a massive gap between “allowed” and “tolerated.” Marketplaces want active, high-volume sellers because that’s how they make their commissions.
Sidekick Tools operates in the “tolerated” zone by focusing on cautious automation. By keeping actions within human limits, Sidekick Tools allows you to reap the benefits of visibility without triggering the “bot-detection” alarms that more aggressive, cheaper bots often do.
Sidekick Tools Controversy: What Actually Happened?
You may have heard rumors about Poshmark account issues or “mass delistings” linked to Sidekick Tools. In late 2025, a wave of concern hit the Poshmark community after some users reported “suspicious login” emails from Poshmark.
The Reality:
The controversy was fueled by a mix of system-wide glitches on Poshmark’s end and a targeted security incident.
Sidekick Tools’ team was transparent, noting that while Poshmark’s own updates caused some login loops, they also took immediate steps to enhance their own encryption and security protocols.
Much of the drama was amplified by “fear of the unknown” in reseller Facebook groups and Subreddits, where news travels fast but context often gets lost.
Is There Proof Sidekick Tools Caused Account Issues?
When a seller gets their account locked, the first instinct is to blame the bot. However, data tells a different story:
- Widespread Glitches: During the height of the controversy, even sellers who never used the Sidekick Tools app reported the same “suspicious login” errors. This points to platform-side updates rather than a specific app.
- Correlation vs. Causation: If 15,000 people use Sidekick and 100 people have an account issue, is it the app? Or is it because those 100 people were also using multiple other tools, VPNs, or violating other policies?
- Verified Success: The overwhelming majority of Sidekick users—thousands of them—report record-breaking sales and zero account issues.
Final Verdict: Is Sidekick Tools App Worth It?
Yes, Sidekick Tools is one of the best automation apps for online resellers.
While no third-party app is 100% risk-free, Sidekick Tools is one of the most stable and security-focused reselling automation apps available.
It is built for those who understand that scaling a reselling business requires calculated risks and that the benefits of consistent, multi-platform activity far outweigh the localized glitches of the past.
One-sentence takeaway: Sidekick Tools provides high-level, human-like automation that secures your time and increases your marketplace sales while maintaining a focus on account longevity.
Frequently Asked Questions (FAQs)
What Makes Sidekick Tools Different from Other Reseller Automation Apps?
Unlike other marketplace automation apps, Sidekick Tools combines automation and crosslisting in one platform. It also uses AI-powered tools to mimic human behavior, helping resellers stay visible in marketplace algorithms while reducing repetitive work.
How Much is Sidekick Tools?
Sidekick Tools starts at $9.99/month for a basic crosslisting-only plan, while the popular “Sidekick Starter” package with Poshmark automation costs $29.99/month. Higher-tier professional and enterprise plans with more automation features range from $44.99 to $99.99/month.
Does Sidekick Tools Offer a Free Trial?
Yes. Sidekick Tools currently offers a 7-day free trial. You can test the full suite of automation and crosslisting tools without entering payment details.