Rerun

• Having an executive-assistant coworker sort the inbox, clear the calendar and send a morning brief every weekday at 7am
• Chaining coworkers so one finds prospects, the next writes each a first email and a third files the results in the CRM, with approval before anything is sent
• Chasing late invoices on a schedule and handling Stripe events through a webhook trigger
• Drafting a week of social posts per network that publish only after you approve them
• Running client automations for several clients from one agency workspace, grouped into Boxes
• Building and versioning coworkers from Claude Code or Cursor through Rerun's MCP endpoint

Rerun's appeal is that it removes two common objections to hosted AI employees at once. Model cost can ride on a Claude, ChatGPT or OpenCode plan you already pay for, and lock-in is reduced by an AGPL-3.0 codebase you can run yourself. The design choices behind it are sensible for business work: an always-on machine per workspace, approvals that pause even 3am scheduled runs, secrets kept out of the model's context, and pricing per coworker rather than per seat or per run. The documentation is also frank about the gaps. Self-hosting is real but not complete, because the template library, paid data, LinkedIn and WhatsApp apps and email notifications stay on Rerun Cloud, and Google and Microsoft apps need your own Composio setup. Inside a workspace, coworkers share one machine and database, and they may edit their own prompts and install tools unless you switch that off. It suits small teams and agencies that want several coworkers on recurring tasks and are willing to review approvals. Teams that need strict isolation, mature governance or a long vendor track record should pilot it carefully.

About Rerun

Rerun is built around three ideas: a workspace, a Box and a coworker. A workspace is your account, and it runs on one private computer in the cloud (in Europe, per Rerun's FAQ) that every coworker in it shares, along with a shared folder, a shared database and the credentials of connected apps. Boxes are free groupings on the isometric board, by team, client or project. A coworker is an AI worker with a name, a markdown system prompt Rerun calls its soul, a model, its own memory, skills, files and SQLite database, and a set of tool families you can switch off (files, shell, web, browser, scheduling, webhooks, delegation and so on). You start by telling the Foreman, Rerun's built-in guide, what you need: it interviews you, proposes a team and builds it, or you install a ready-made template (executive assistant, SDR, social media manager, collections and more) or describe a single coworker and let it write its own prompt. Coworkers run on a cron, on a public webhook URL, when another coworker calls them by @handle, or when you chat with them, and they can split work into up to four parallel sub-coworkers. Since October 2026 each coworker also works on a screen of its own, with a browser, files and a terminal, so it can click through sites that have no connector while you watch or take over. Apps come from Rerun's catalog or from any MCP server you register: Rerun's site advertises 3,000+ apps and MCPs, while the open-source catalog seed lists 216 services, with Composio adding 2,000+ more apps by OAuth. Human-in-the-loop is built in: a coworker can pause mid-run, including at 3am on a scheduled run, to ask a question, request approval for a list of actions, ask you to connect an app, or collect an API key through a masked form whose value never reaches the model. The model layer is unusually open: Rerun's hosted Fast, Balanced and Smart tiers paid from included credits, a Claude Pro or Max or ChatGPT Plus or Pro plan (the engine ships the Claude Code and Codex CLIs to use them), an OpenCode key, API keys for Anthropic, OpenAI, Google or OpenRouter, or any OpenAI-compatible endpoint such as Ollama or vLLM. Rerun Cloud costs $29 a month for five coworkers with unlimited seats and 500 credits, after a 5-day card-required trial, with extra coworkers sold in packs of five. On November 3, 2026, the two-founder team open-sourced the app and engine under AGPL-3.0 with a Docker Compose install that needs a Supabase project. The tradeoffs: the self-hosted build drops the template library, included credits, LinkedIn and WhatsApp Pro apps, paid data, email notifications and the iOS app, and Google and Microsoft apps there need your own Composio setup; coworkers in a workspace share one machine and database, so Boxes are not a security boundary; coworkers may rewrite their own prompt and install tools unless you turn that off; and the product is young.