The open-source collaboration system for people and AI agents. Share context, coordinate tasks, and work in parallel with your team, cloud agents, Codex, Claude Code, Grok, Grok Bot, OpenCode, Antigravity, and Cursor.
OpenTag connects Slack with coding agents running on a computer controlled by the user, so channel mentions can queue work and return status, decisions, and evidence in the same thread. It is for engineering teams that want to run agents such as Claude Code, Codex, or Cursor against local checkouts through the Agent Client Protocol.
This repository also configures its own agents. See what opentag tells them →
Agent Claude Code
Read-only evidence collector for fan-out audits — doc health sweeps, dead-code hunts, contract-drift checks, multi-file inventories. Use PROACTIVELY when a question needs facts gathered across many files and only the conclusion matters. Reports facts with file:line evidence; never proposes fixes.
Agent Claude Code
Adversarial final reviewer for a completed work order or diff — checks the change against its acceptance criteria and the scoped developing/ owner documents, hunting for ship-blockers. Use when a batch of work needs a PASS/FAIL verdict with evidence before merge or deploy.