npm install -g gsd-piRequires Node.js ≥ 22.0.0 (24 LTS recommended) and Git.
command not found: gsd? Your shell may not have npm's global bin directory in$PATH. Runnpm prefix -gto find it, then add$(npm prefix -g)/binto your PATH. See Troubleshooting for details.
GSD checks for updates once every 24 hours. When a new version is available, you'll see an interactive prompt at startup with the option to update immediately or skip. You can also update from within a session with /gsd update.
If you use a non-Anthropic model, you'll need a search API key for web search. Run /gsd config to set keys globally — they're saved to ~/.gsd/agent/auth.json and apply to all projects:
# Inside any GSD session:
/gsd configSee Global API Keys for details on supported keys.
If you want GSD to call local or external MCP servers, add project-local config in .mcp.json or .gsd/mcp.json.
See Configuration → MCP Servers for examples and verification steps.
GSD is also available as a VS Code extension. Install from the marketplace (publisher: FluxLabs) or search for "GSD" in VS Code extensions. The extension provides:
@gsdchat participant — talk to the agent in VS Code Chat- Sidebar dashboard — connection status, model info, token usage, quick actions
- Full command palette — start/stop agent, switch models, export sessions
The CLI (gsd-pi) must be installed first — the extension connects to it via RPC.
Run gsd in any directory:
gsdGSD displays a welcome screen showing your version, active model, and available tool keys. Then on first launch, it runs a setup wizard:
- LLM Provider — select from 20+ providers (Anthropic, OpenAI, Google, OpenRouter, GitHub Copilot, Amazon Bedrock, Azure, and more). OAuth flows handle Claude Max and Copilot subscriptions automatically; otherwise paste an API key.
- Tool API Keys (optional) — Brave Search, Context7, Jina, Slack, Discord. Press Enter to skip any.
If you have an existing Pi installation, provider credentials are imported automatically.
Re-run the wizard anytime with:
gsd configGSD auto-selects a default model after login. Switch later with:
/model
Or configure per-phase models in preferences — see Configuration.
Type /gsd inside a session. GSD executes one unit of work at a time, pausing between each with a wizard showing what completed and what's next.
- No
.gsd/directory → starts a discussion flow to capture your project vision - Milestone exists, no roadmap → discuss or research the milestone
- Roadmap exists, slices pending → plan the next slice or execute a task
- Mid-task → resume where you left off
Step mode is the on-ramp. You stay in the loop, reviewing output between each step.
Type /gsd auto and walk away. GSD autonomously researches, plans, executes, verifies, commits, and advances through every slice until the milestone is complete.
/gsd auto
See Auto Mode for full details.
The recommended workflow: auto mode in one terminal, steering from another.
Terminal 1 — let it build:
gsd
/gsd autoTerminal 2 — steer while it works:
gsd
/gsd discuss # talk through architecture decisions
/gsd status # check progress
/gsd queue # queue the next milestoneBoth terminals read and write the same .gsd/ files. Decisions in terminal 2 are picked up at the next phase boundary automatically.
GSD organizes work into a hierarchy:
Milestone → a shippable version (4-10 slices)
Slice → one demoable vertical capability (1-7 tasks)
Task → one context-window-sized unit of work
The iron rule: a task must fit in one context window. If it can't, it's two tasks.
All state lives on disk in .gsd/:
.gsd/
PROJECT.md — what the project is right now
REQUIREMENTS.md — requirement contract (active/validated/deferred)
DECISIONS.md — append-only architectural decisions
KNOWLEDGE.md — cross-session rules, patterns, and lessons
RUNTIME.md — runtime context: API endpoints, env vars, services (v2.39)
STATE.md — quick-glance status
milestones/
M001/
M001-ROADMAP.md — slice plan with risk levels and dependencies
M001-CONTEXT.md — scope and goals from discussion
slices/
S01/
S01-PLAN.md — task decomposition
S01-SUMMARY.md — what happened
S01-UAT.md — human test script
tasks/
T01-PLAN.md
T01-SUMMARY.md
gsd --continue # or gsd -cResumes the most recent session for the current directory.
To browse and pick from all saved sessions:
gsd sessionsShows each session's date, message count, and first-message preview so you can choose which one to resume.
- Auto Mode — deep dive into autonomous execution
- Configuration — model selection, timeouts, budgets
- Commands Reference — all commands and shortcuts
The oh-my-zsh git plugin defines alias gsd='git svn dcommit', which shadows the GSD binary.
Option 1 — Remove the alias in your ~/.zshrc (add after the source $ZSH/oh-my-zsh.sh line):
unalias gsd 2>/dev/nullOption 2 — Use the alternative binary name:
gsd-cliBoth gsd and gsd-cli point to the same binary.