Mercury Agent

Mercury Code is a coding agent that runs inside Mercury Agent, invoked with the `/code` command from the terminal, browser, or any of Mercury's other channels. It targets developers who want an autonomous assistant that can plan, edit files, run shells, and push commits without becoming another chat window to babysit. The launch matters now because it ships as part of Mercury Agent v1.2.3, called "Unstoppable Mercury," the first release where the coding loop is meant to reliably finish work instead of stalling mid-task. The release focuses on making agent runs honest and durable. Every task ends in a verdict, either a verified completion with evidence or an honest pause that names its blocker and resumes. A new AUTO mode plans and builds in one flow, a mechanical escalation harness forces action when models narrate, and memory pressure now compacts instead of killing long builds. The release also ships a completion contract that blocks fake "Task complete" outputs, a forced-action escalation harness, a live plan checklist with thinking preview, and an SSRF guard with secret redaction. Around the coding agent sits the broader Mercury runtime, a soul-driven agent with Second Brain memory, a full Skill System, Token Saver Mode, multi-agent orchestration, 40+ permission-hardened tools, and standalone binaries on every major OS that runs 24/7 from your terminal, browser, Telegram, Discord, Slack, or Signal. The built-in toolkit spans filesystem, shell, git, GitHub PRs and issues , which is what lets `/code` behave like a working engineer rather than a suggestion engine. Mercury is developed in the open by Cosmic Stack, whose Cosmic Stack operates as a research lab, an incubator, an open-source org, and an inference cloud , with the source hosted under the cosmicstack-labs organization on GitHub.