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Looper is an open-source AI teammate platform in which each looper owns one business metric, such as organic clicks, response time, post reach, qualified leads, or unreconciled transactions. A looper connects to business tools such as Gmail, HubSpot, Stripe, Search Console, GitHub, Linear, Buffer, and other services through Composio; it plans work on a schedule, runs skills, updates a Kanban board, moves the metric, and conducts a weekly retrospective. Researching, drafting, and planning can happen independently, while sending, publishing, paying, and deleting require approval. Looper can run using a user's ChatGPT or Grok subscription or API key, with paid plans adding Claude credits, and the page also describes self-hosting through Vercel.

loop.js is a TypeScript framework and CLI for loop engineering: it runs an agent against a declared goal and verification criterion until a separate, skeptical Verify agent judges the work complete. Each round starts with fresh context and reads state and handoff notes from disk; the worker agent cannot approve its own work, and a failed verification supplies a reason for the next round. The framework provides round, spending, and per-round timeout guards; typed exits; crash recovery; idempotent resumption from a stored cursor; and a compare-and-set lock with heartbeat to prevent overlapping live runs and take over dead ones. It can run from a terminal, be embedded in a product, or be scheduled through crontab, launchd, Task Scheduler, or Modal's cloud.

Autoprompt is a coding-agent skill and CLI that turns a development goal into a managed loop of scoping, implementation, testing, review, repair, and verification. It coordinates coding agents with configurable concurrency and model routing, and supports installation into several coding-agent environments, including Claude Code, Codex, OpenCode, Kilo Code, and VS Code. The repository reports an OpenCode comparison in which Autoprompt reduced failures from 29 of 89 tasks to 16, or 45% fewer failures, with an expected trade-off of roughly three times the execution time and twice the token use. It requires Node.js 20+, Python 3.11+ with PyYAML, and Bash 4.3+ on macOS or Linux.

AgentLoop is a developer tool that runs unattended coding loops on a user's machine, executing plans authored in ChatGPT by launching Codex-based workers and independent critic processes. It automates iterative code generation and evaluation until configured quality standards are met.