How do I install the Gc City skill?

Run npx skillmds@latest add gastownhall/gc-city in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Gc City skill do?

City lifecycle — status, start, stop, init It is listed under Coding & Dev Tools on SkillMD.

Is Gc City safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Gc City?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Gc City free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Gc City?

gastownhall (@gastownhall) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Gc City by gastownhall — Agent Skill

Name: Gc City
Author: gastownhall

File contents

City Lifecycle

A city is a directory containing city.toml and .gc/ runtime state.

Initialization

gc init                                # Initialize city in current directory
gc init <path>                         # Initialize city at path

Starting and stopping

gc start                               # Start city under the supervisor
gc start <path>                        # Start city at path under the supervisor
gc supervisor run                      # Run the supervisor in the foreground
gc start --dry-run                     # Preview what would start
gc stop                                # Stop the current city
gc restart                             # Stop then start

gc init and gc start register the city with the machine supervisor, ensure it is running, and trigger an immediate reconcile. Interactive sessions are created separately with gc session new <template>.

Status

gc status                              # City-wide overview
gc session list                        # Session / agent status
gc rig status <name>                   # Rig status

Suspending

gc suspend                             # Suspend entire city
gc resume                              # Resume suspended city

Configuration

gc config show                         # Show resolved configuration
gc config explain                      # Show config layering and provenance
gc doctor                              # Run health checks

Events

gc events                              # Tail the event log
gc event emit <type> [data]            # Emit a custom event

Dashboard

See the gc-dashboard skill for full dashboard reference.

Packs

Packs extend Gas City with additional commands, prompts, formulas, and doctor checks. Pack commands appear as top-level gc <pack> <command> subcommands.

gc pack list                           # List installed packs
gc pack fetch                          # Fetch remote packs

---name: gc-citydescription: City lifecycle — status, start, stop, init---# City LifecycleA city is a directory containing `city.toml` and `.gc/` runtime state.## Initialization```gc init # Initialize city in current directorygc init <path> # Initialize city at path```## Starting and stopping```gc start # Start city under the supervisorgc start <path> # Start city at path under the supervisorgc supervisor run # Run the supervisor in the foregroundgc start --dry-run # Preview what would startgc stop # Stop the current citygc restart # Stop then start````gc init` and `gc start` register the city with the machine supervisor,ensure it is running, and trigger an immediate reconcile. Interactivesessions are created separately with `gc session new <template>`.## Status```gc status # City-wide overviewgc session list # Session / agent statusgc rig status <name> # Rig status```## Suspending```gc suspend # Suspend entire citygc resume # Resume suspended city```## Configuration```gc config show # Show resolved configurationgc config explain # Show config layering and provenancegc doctor # Run health checks```## Events```gc events # Tail the event loggc event emit <type> [data] # Emit a custom event```## DashboardSee the gc-dashboard skill for full dashboard reference.## PacksPacks extend Gas City with additional commands, prompts, formulas, anddoctor checks. Pack commands appear as top-level `gc <pack> <command>`subcommands.```gc pack list # List installed packsgc pack fetch # Fetch remote packs```

Frequently asked questions

Gc City