Session Dir

Bind extra working directories to one opencode session — durably, across restarts. Other sessions never see them.

The agent already works in the session's own directory; anything outside it needs external_directory approval. This plugin lets a session declare the other directories it may work in, and remembers that binding for that session alone. Open a different session and the same path is still gated by the normal permission flow.

Install

Add it to the plugins array in ~/.config/opencode/opencode.json and restart (or /reload) opencode:

{
  "plugins": ["@jeffreyjyz/opencode-session-dir"]
}

For local development point at the checkout instead (an absolute path is treated as a local plugin):

{
  "plugins": ["/Users/you/dev/cmdcode-tools/opencode-session-dir"]
}

After bun run build the root index.js / tui.js shims load dist/.

Commands

Command	Behavior
/session-dir	Browse (or type) a directory and bind it to the current session.
/session-dir-list	Show the directories bound to the current session.
/session-dir-remove	Pick a bound directory and unbind it.

All three require an open session; they act on the active session only.

How it works

Two halves of one package, because they run in different processes:

half	file	job
server	src/index.ts	permission.evaluate grants external_directory for the requesting session's bound dirs; session.context advertises them to the model
TUI	src/tui.tsx	the three slash commands and their dialogs

Both halves meet on the filesystem. Bindings live in $XDG_DATA_HOME/opencode/session-dir/bindings.json (default ~/.local/share/opencode/session-dir/bindings.json) as a map from session id to absolute paths:

{
  "ses_abc123": ["/Users/you/other-project"]
}

The server reads it through a short mtime cache, so a binding added in the TUI takes effect on the next permission check. A configured deny in your permissions always wins — the hook only turns ask into allow.

Set OPENCODE_SESSION_DIR_INJECT_CONTEXT=1 to also fold each bound directory's AGENTS.md / CLAUDE.md / .agents/AGENTS.md into the system prompt.

Difference from opencode-add-dir

opencode-add-dir offers "this session only" (a flat list, cleared when the server restarts and shared by every session in that process) and "remember across sessions" (persisted, but global to all sessions). This plugin is the combination it does not offer: one session, durable.

Development

bun install
bun test
bun run typecheck
bun run build