mARC (Multi-Agent Relay Control) is an open-source plugin that brings an autonomous team of AI engineering specialists (@techlead, @dev, @sre, @design, @sec, @rev, @research) into terminal harnesses like Claude Code, Google Antigravity, and GitHub Copilot CLI.

How do I install mARC on Claude Code?

Add the marketplace with '/plugin marketplace add NexaDuo/mARC', install with '/plugin install marc@nexaduo', and convene the team with '/marc:tech-lead'.

Which AI harnesses are supported by mARC?

mARC currently supports Claude Code, Google Antigravity (agy), and GitHub Copilot CLI.

How does mARC coordinate tasks across agents?

mARC uses GitHub Projects and Issues as its central source of truth. The @techlead operator coordinates stateless specialist agents in background worktrees with mandatory pre-merge security and correctness gates.

#marc topic: multi-agent relay control · @techlead ops the channel

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Multi-Agent Relay Control is a plugin for Claude Code, Google Antigravity, or GitHub Copilot CLI that runs a complete team of AI engineering agents in your terminal.

You can install the cross-repo team of agents as a user-level plugin. Once installed, running /marc:tech-lead brings in the coordinator, who automatically dispatches specialized agents like @dev, @sre, @design, @sec, @rev, and @research to handle coding, infrastructure setups, research briefs, and pre-merge audits.

▶ /join #marc view source ↗

NAMES #marc · 7 users · 1 operator

@techleadchannel op Leader & router. Reads the request, breaks it down, and convenes exactly the specialists the job needs. The only skill you invoke by hand: /marc:tech-lead.
@devengineering Feature work, refactors, tests. Ships code across repos, including implementation, bug fixes, and the regression tests that keep them fixed.
@srereliability Infra, deploys, observability. Owns runtime health, which includes pipelines, containers, logs/metrics, and self-healing diagnostics.
@designfront-end UI, UX, and the screens. Builds the user-facing surfaces and flows, wired to real APIs, backed by the tests to guard them.
@secsecurity Review & the merge gate. Audits changes before they land, serving as the pre-merge security pass that guards the tree.
@revcode review Correctness & code health. Audits code logic, edge cases, and test completeness before landing; the second half of the mandatory merge gate.
@researchresearch External evidence & citations. Gathers benchmarks, documentation, and technical trade-offs into cited briefs before architectural decisions.

/LIST marc.nexaduo.net · 9 channels

one-command@techlead Running /marc:tech-lead handles the entire lifecycle, including spec validation, project board updates, parallel task execution, and final tracking.
every-repouser-scope You install the team once as a user-scope plugin. The agents will follow you automatically into any workspace you open.
the-boardboard sync Every task maps directly to an issue on your GitHub project board, tracking status categories like todo, in progress, blocked, and done.
zero-configruntime No hardcoded configuration is required. The team finds your repo, organization, and project board at runtime using the gh CLI.
marc-initopt-in Run /marc:init to scaffold your local configuration. The command writes .agents/team.toml on Google Antigravity, or .claude/team.toml on Claude Code. It prints the planned content first so you can review it.
merge-gate@sec + @rev A mandatory dual pre-merge gate: @sec performs security audits while @rev verifies correctness, logic, and test coverage before anything merges.
lessonstwo-tier Two-tier, size-capped memory with pinned invariants ([PINNED]) and ISO-dated decay ([EXPIRES: YYYY-MM-DD]); oversized briefs spill into PR-gated team artifacts.
coordinationpeer ops Cross-harness peer operators coordinate via association-checked ## @techlead claim markers, git worktree list inspection, and safe dead-worktree remedies.
install-shauditable The install script runs completely locally. It outputs every command before running, uses no remote downloads, and relies on built-in plugin mechanisms.

#marc paste these into Claude Code

you (step 1) · add the marketplace

/plugin marketplace add NexaDuo/mARC

you (step 2) · install the plugin (user scope)

/plugin install marc@nexaduo

@techlead has joined · op the channel with

/marc:tech-lead

shell · prefer a terminal? clone and install

git clone https://github.com/NexaDuo/mARC && cd mARC && ./install.sh

The shell path runs the repo's own install.sh. It echoes every command before running it, fetches no remote code, and uses only Claude Code's built-in plugin mechanism. Read it before you run it.

you (step 1) · install the agy CLI tool

bash <(curl -fsSL https://antigravity.google/cli/install.sh)

you (step 2) · clone the repo (agy installs from a local directory)

git clone https://github.com/NexaDuo/mARC.git

you (step 3) · install the mARC plugin from the harness directory

agy plugin install ./mARC/harnesses/antigravity/marc

you (step 4) · invoke the tech-lead skill

agy /marc:tech-lead

This registers the mARC plugin on the Google Antigravity harness. The agent team runs locally in your environment, utilizing the configured workspace directory.

you (step 1) · add the marketplace

copilot plugin marketplace add NexaDuo/mARC

you (step 2) · install the plugin

copilot plugin install marc@nexaduo

@techlead has joined · op the channel with

/marc:tech-lead

Installs the mARC plugin on GitHub Copilot CLI using custom agents (marc:*) and native task dispatch.

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