Filesystem connector for agentmemory. Watches one or more directories and emits an observation to the running agentmemory server every time a file changes.

Part of the data-source-connectors effort tracked in issue #62.

Install

npm install -g @agentmemory/fs-watcher

Or run without installing:

npx @agentmemory/fs-watcher ~/work/my-repo

Usage

# CLI args win over env.
agentmemory-fs-watcher ~/work/my-repo ~/notes

# Or set env once in your shell.
export AGENTMEMORY_FS_WATCH_DIRS=~/work/my-repo,~/notes
export AGENTMEMORY_URL=http://localhost:3111
export AGENTMEMORY_SECRET=...   # only if the server requires auth
agentmemory-fs-watcher

Every file change inside the watched roots becomes a post_tool_use observation whose data.changeKind is file_change or file_delete. The first 4 KB of each text file is included as data.content so retrieval can match by substring; larger files are truncated with data.truncated: true. Binary files are not read (set AGENTMEMORY_FS_WATCH_ALLOW_BINARY=1 to override).

Session id and project are required by the observe endpoint — set them via env, or the watcher generates a per-process fs-watcher-<ts>-<rand> session id and uses the first root's directory name as the project.

Requires Node.js >=20 LTS. Recursive fs.watch needs Node 19.1.0+ on Linux; Node 20 is the minimum supported LTS line.

Configuration

Variable	Default	Meaning
`AGENTMEMORY_FS_WATCH_DIRS`	—	Comma-separated list of directories to watch
`AGENTMEMORY_FS_WATCH_IGNORE`	—	Comma-separated regex patterns to ignore (applied to relative paths)
`AGENTMEMORY_FS_WATCH_ALLOW_BINARY`	`0`	`1` to include binary files in the preview read
`AGENTMEMORY_URL`	`http://localhost:3111`	agentmemory server URL
`AGENTMEMORY_SECRET`	—	Bearer token, required if the server has `AGENTMEMORY_SECRET` set
`AGENTMEMORY_PROJECT`	—	Optional project label attached to each observation
`AGENTMEMORY_SESSION_ID`	—	Optional session id to attribute observations to

Defaults

Ignored out of the box: .git/, node_modules/, dist/, build/, .next/, .turbo/, coverage/, .DS_Store, *.log, *.lock. Extend with AGENTMEMORY_FS_WATCH_IGNORE.

Text extensions read for preview: common source, config, and docs (.ts/.js/.py/.go/.rs/.md/.yaml/...). Unknown extensions are recorded as a path-only observation without content.

Writes are debounced 500 ms per path so a stream of saves from your editor becomes a single observation.

Notes

Uses Node's built-in fs.watch with { recursive: true }. Works natively on macOS, Linux, and Windows 10+. No native deps.
If fs.watch errors on a specific root (permission, platform quirk), the watcher logs and continues on the others.
The process must keep running. Use a process manager (launchd, systemd, pm2) to supervise it.
This connector is intentionally one-way: it writes observations and never reads the agentmemory store.