OpenCode cheat sheet

Every command, flag and slash command for opencode — Open-source terminal agent with a slick TUI, 75+ providers via Models.dev, and a headless HTTP server. 13+ commands, verified July 2026.

The GitHub org was renamed sst → anomalyco — github.com/sst/opencode now redirects. Same project; only the brew tap and repo URL changed. This is *not* the unrelated opencode-ai/opencode fork.

Install

curl -fsSL https://opencode.ai/install | bash   # official installer
npm install -g opencode-ai                       # npm (also bun / pnpm / yarn)
brew install anomalyco/tap/opencode              # Homebrew tap (most current)

Start & run

opencode                     # launch the TUI in the current dir
opencode /path/to/project    # TUI in a specific directory
opencode run "<message>"     # headless: run one prompt, print the result
opencode auth login          # add a provider + API key
opencode models [provider]   # list available models
opencode serve               # headless HTTP API server (no TUI)

`run` flags

Flag	What it does
`-c, --continue`	Continue the last session
`-s, --session <id>`	Continue a specific session id
`-m, --model <p/m>`	Model in `provider/model` form
`--agent <name>`	Agent to use
`--format <default\|json>`	`json` emits raw JSON events (scripting)
`--auto`	Auto-approve any permission not explicitly denied

In-session (TUI · `ctrl+p` palette)

Command	What it does
`/init`	Create / update `AGENTS.md` for the project
`/models` · `/sessions`	Browse models / past sessions
`/new` (`/clear`)	Start a fresh session
`/compact` (`/summarize`)	Compress the session to save context
`/undo` · `/redo`	Revert / restore a message + its file changes
`/share` · `/export`	Share the session / save to Markdown
`/editor`	Compose the message in your external `$EDITOR`

Config

// opencode.json (project)  ·  ~/.config/opencode/opencode.json (global)
{
  "$schema": "https://opencode.ai/config.json",
  "model": "anthropic/claude-sonnet-4-5"
}
// AGENTS.md = project rules (/init to generate)
// keys are added with `opencode auth login`, stored separately from config

Common one-liners

opencode run "explain what this repo does and its entry points"
opencode run -c "now add unit tests for the change you just made"
opencode run -m anthropic/claude-sonnet-4-5 "refactor src/auth.ts"
opencode run --format json "list every TODO comment with its file and line"