diff --git a/README.md b/README.md
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@@ -47,4 +47,5 @@ OpenCode auto-discovers all `SKILL.md` files under `~/.opencode/skills/`. No cha
 | [obsidian-bases](skills/obsidian-bases) | Create and edit [Obsidian Bases](https://help.obsidian.md/bases/syntax) (`.base`) with views, filters, formulas, and summaries |
 | [json-canvas](skills/json-canvas) | Create and edit [JSON Canvas](https://jsoncanvas.org/) files (`.canvas`) with nodes, edges, groups, and connections |
 | [obsidian-cli](skills/obsidian-cli) | Interact with Obsidian vaults via the [Obsidian CLI](https://help.obsidian.md/cli) including plugin and theme development |
+| [ob-cli](skills/ob-cli) | Use the `ob` CLI for headless [Obsidian Sync and Publish](https://obsidian.md/) workflows tied to local vault paths |
 | [defuddle](skills/defuddle) | Extract clean markdown from web pages using [Defuddle](https://github.com/kepano/defuddle-cli), removing clutter to save tokens |
diff --git a/skills/ob-cli/SKILL.md b/skills/ob-cli/SKILL.md
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+---
+name: ob-cli
+description: Use the `ob` command line tool to work with Obsidian services for local vaults, especially Obsidian Sync and Obsidian Publish. Use when the user wants to log into Obsidian from the terminal, inspect or configure remote sync/publish targets, sync a vault headlessly, publish vault changes, or automate these service workflows without opening the Obsidian app UI.
+---
+
+# Obsidian `ob` CLI
+
+Use `ob` for headless access to Obsidian services tied to a local vault path.
+
+`ob` is especially useful when the Obsidian desktop app is not running or is not available at all, such as on a VPS, CI runner, remote server, or other headless environment.
+
+## Install and docs
+
+Install `ob` with:
+
+```bash
+npm install -g obsidian-headless
+```
+
+If installation details need verification or the user hits platform-specific issues, use the official headless documentation:
+
+- https://obsidian.md/help/headless
+
+Do not guess alternate package names or unofficial install methods.
+
+Use this skill when the task is about:
+
+- Logging into an Obsidian account from the terminal
+- Connecting a local vault to Obsidian Sync or Obsidian Publish
+- Running or checking sync for a vault
+- Publishing vault changes from the command line
+- Inspecting or changing sync/publish configuration for a vault
+
+Do not use this skill for note editing, search, task management, or plugin/theme debugging inside the app. Use the `obsidian` CLI skill for those workflows when the desktop app is running.
+
+If the desktop app is unavailable, manipulate the vault files directly with standard agent or Unix tools and the `obsidian-markdown` skill as needed. Treat `ob` as the service-side tool for Sync and Publish, not as the primary editor for note contents.
+
+## Quick check
+
+Start with:
+
+```bash
+ob --help
+```
+
+If the user needs the exact flags for a subcommand, prefer `ob <command> --help` over memory.
+
+## Path model
+
+Most `ob` commands target a local vault by filesystem path:
+
+```bash
+ob sync --path "/path/to/vault"
+ob publish --path "/path/to/vault"
+```
+
+If `--path` is omitted, `ob` uses the current directory. Set the shell `workdir` to the vault root when possible.
+
+## Core workflows
+
+### Account login
+
+Check login status or authenticate:
+
+```bash
+ob login
+ob login --email "user@example.com"
+```
+
+Use `--password` and `--mfa` only when the task explicitly requires non-interactive auth handling.
+
+### Sync setup
+
+List available vaults first if needed:
+
+```bash
+ob sync-list-remote
+ob sync-list-local
+```
+
+Connect a local vault to Sync:
+
+```bash
+ob sync-setup --vault "Vault Name or ID" --path "/path/to/vault"
+```
+
+Important setup/config options:
+
+- `--password` for the end-to-end encryption password
+- `--device-name` to label this client in sync history
+- `--config-dir` when the vault uses a nonstandard config folder instead of `.obsidian`
+
+### Run sync
+
+One-shot sync:
+
+```bash
+ob sync --path "/path/to/vault"
+```
+
+Continuous sync:
+
+```bash
+ob sync --path "/path/to/vault" --continuous
+```
+
+Check state first when diagnosing:
+
+```bash
+ob sync-status --path "/path/to/vault"
+```
+
+### Sync configuration
+
+Use `sync-config` when the user wants to change how sync behaves for a vault:
+
+```bash
+ob sync-config --path "/path/to/vault" --mode pull-only
+ob sync-config --path "/path/to/vault" --excluded-folders "Templates,Attachments/tmp"
+```
+
+Notable flags:
+
+- `--conflict-strategy merge|conflict`
+- `--mode bidirectional|pull-only|mirror-remote`
+- `--excluded-folders`
+- `--file-types image,audio,video,pdf,unsupported`
+- `--configs` for Obsidian config categories to sync
+- `--device-name`
+- `--config-dir`
+
+Use extra care with `mirror-remote`, which reverts local changes to match the remote state.
+
+### Publish setup
+
+List sites:
+
+```bash
+ob publish-list-sites
+```
+
+Connect a vault to a Publish site:
+
+```bash
+ob publish-setup --site "site-slug-or-id" --path "/path/to/vault"
+```
+
+### Publish changes
+
+Preview before changing anything:
+
+```bash
+ob publish --path "/path/to/vault" --dry-run
+```
+
+Publish without confirmation only when the task is explicitly automated or unattended:
+
+```bash
+ob publish --path "/path/to/vault" --yes
+```
+
+Include files without a publish flag only when the user asks for a broad publish:
+
+```bash
+ob publish --path "/path/to/vault" --all
+```
+
+### Publish configuration
+
+Configure include/exclude folders:
+
+```bash
+ob publish-config --path "/path/to/vault" --includes "Notes,Docs"
+ob publish-config --path "/path/to/vault" --excludes "Private,Drafts"
+```
+
+Adjust site options:
+
+```bash
+ob publish-site-options --path "/path/to/vault" --site-name "My Site"
+```
+
+Common `publish-site-options` flags:
+
+- `--index-file`
+- `--logo`
+- `--show-navigation`
+- `--show-search`
+- `--show-backlinks`
+- `--show-outline`
+- `--show-hover-preview`
+- `--show-theme-toggle`
+- `--default-theme light|dark`
+- `--nav-order`
+- `--nav-hidden`
+
+## Decision guide
+
+Use `ob` when the task is service-oriented and path-based:
+
+- "Set this vault up with Obsidian Sync"
+- "Run sync for this vault"
+- "Publish these vault changes"
+- "Configure which folders Publish includes"
+- "Check whether this machine is linked to the right remote vault"
+
+Use the `obsidian` CLI instead when the task is app-oriented:
+
+- Read or edit note contents
+- Search notes, backlinks, tags, tasks, or properties
+- Create daily notes
+- Reload plugins or inspect the Obsidian UI
+
+Use direct filesystem tools plus `obsidian-markdown` when the task is content-oriented but the desktop app is not available:
+
+- Editing notes on a VPS or remote shell
+- Creating or reorganizing vault files in CI or automation
+- Bulk-fixing Markdown, wikilinks, frontmatter, or embeds without a running app
+- Preparing vault content locally before running `ob sync` or `ob publish`
+
+## Safety and verification
+
+- Prefer `--dry-run` for publish previews when available.
+- Prefer status/list commands before mutating setup in an already-configured vault.
+- When a vault path is ambiguous, inspect the filesystem first instead of guessing.
+- When a command could change remote state, confirm the target path/site/vault name from command output before proceeding.
+
+## Reference
+
+- Headless Obsidian docs: https://obsidian.md/help/headless