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What is UseMerlin?
UseMerlin is an AI tool from Lovin, LLC that turns Claude Code and Codex into a team member inside Slack, Linear and GitHub. Its product, Merlin, lets anyone on the team hand off a task in a thread or an issue and get progress and results back in the same place. It is aimed at small AI-native teams that want to share their coding agents.
How does Merlin work in Slack, Linear and GitHub?
Install the desktop app or CLI on one machine, log in to Claude Code and Codex, and invite Merlin to the Slack channels you choose. Then just ask in plain language: "why did checkout conversion drop this week?", "fix this Linear bug" or "address the feedback on this pull request". Merlin dispatches the work to the agent, which runs on your own devices with the MCP servers and skills you already have, and returns commits, replies or a PR link. It can respond only when mentioned or proactively in channels you pick.
Why use Merlin as a team?
Everyone sees the same runs and can steer the task in the thread. What one person sets up, everyone gets: shared skills, shared machines, automations for recurring work and shared memory holding decisions and history. Model usage stays on your existing Claude or Codex accounts, with no API keys and no extra per-token fees.
Who is UseMerlin for?
- Engineering teams delegating bugs, red CI runs or small features.
- Product, marketing or support teams needing answers grounded in data and code.
- Solo founders who already live in Claude Code or Codex.
UseMerlin pros and cons
It shines by working where the conversation already happens and by reusing the agent accounts you have. On the downside, it needs at least one machine running Claude Code or Codex, inherits those providers' usage limits, only integrates with Slack, Linear and GitHub for now, and the interface is English only.
UseMerlin features and use cases
How to use UseMerlin
UseMerlin FAQ
What is UseMerlin?
UseMerlin is the site for Merlin, an AI agent that brings Claude Code and Codex into Slack, Linear and GitHub so the whole team can hand it tasks.
Is UseMerlin free?
It is not free, but every new workspace gets a 14-day Team trial with no card (see pricing).
Does Merlin include AI model usage?
No, it uses your own Claude Code and Codex accounts, with no API keys or extra per-token fees, and your provider's limits apply.
Where does Merlin run tasks?
Tasks run on your team's own computers with their files, MCP servers and skills, not in Merlin's cloud.
Can Merlin read all my Slack channels?
No, it only sees channels it is invited to, and you choose whether it replies on mention or proactively.
What counts as a request in UseMerlin?
Every task it runs: a Slack mention or DM, a Linear or GitHub request, a thread follow-up or an automation run.
Is UseMerlin only for engineers?
No, its use cases cover product, design, marketing, sales, support, finance, data, IT and legal teams too.
Does UseMerlin have an API or CLI?
It offers a CLI and a desktop app to connect machines; no separate public API is advertised.
What do I need to get started with Merlin?
One computer with Claude Code or Codex logged in, the Merlin app or CLI, and a Slack workspace.
What are the best UseMerlin alternatives?
In our directory you can compare using Claude Code or OpenAI Codex directly, or CodeRabbit for GitHub code reviews.
UseMerlin pricing and plans
Reference price: 9 USD / month. Source · Verified: November 12, 2026
UseMerlin pricing (Checked on: 12/11/2026), in USD per workspace per month, with no per-seat fees. Model usage stays on your own Claude Code or Codex accounts. Every new workspace starts with a 14-day Team trial, no card:
- Starter: $9/month. Up to 3 active users per the plan table (the FAQ says 5) and 1,000 requests and automation runs a month.
- Team: $59/month. Up to 50 active users, 5,000 requests a month and priority support.
- Scale: $99/month. Up to 200 active users and unlimited requests.
- More than 200 people: contact sales.
UseMerlin Screenshots
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