Obsidian Link

obsidian-link

Connect a project's Claude Code configuration (agents, skills) to an Obsidian vault for browsing, searching, and cross-referencing.

Directionality:

• Global agents/skills: Obsidian is source of truth, symlinked into ~/.claude/
• Per-project agents/skills: Project repo is source of truth, symlinked into Obsidian

Mode Dispatch

Parse the user's input to determine mode:

• /obsidian-link or /obsidian-link link → Link mode (default)
• /obsidian-link status → Status mode
• /obsidian-link unlink <project> → Unlink mode
• /obsidian-link init → Init mode (configure plan frontmatter)

Configuration

Resolving the vault path

Check in order:

1. OBSIDIAN_VAULT environment variable
2. ~/.obsidian-vault file (single line, absolute path)

If found, confirm with the user. If not found, ask. Once confirmed, offer to save to ~/.obsidian-vault.

Directory structure

<vault>/ClaudeCode/
  ├── README.md           # Auto-generated index (wikilinks)
  ├── Agents/
  │   ├── global/
  │   └── <project>/
  ├── Skills/
  │   ├── global/
  │   └── <project>/
  └── Plans/              # ~/.claude/plans → here

Preflight (runs before every mode)

Before executing any mode, silently check the current setup state. This takes a few seconds and informs how you interact with the user.

Checks

Behaviour

Summarise the setup state in a compact block before proceeding with the requested mode:

obsidian-link preflight:
  Vault:       /path/to/vault (OK)
  Plans:       ~/.claude/plans → vault (OK)
  Frontmatter: configured in CLAUDE.md (OK) | not configured
  Project:     <project> linked (6 agents, 2 skills) | not linked

Then, based on state and requested mode:

• If vault path is missing → Ask the user before continuing with any mode. Cannot proceed without it.
• If frontmatter is not configured and mode is link or status → Append a suggestion after the mode completes:

  Tip: Run /obsidian-link init to configure plan frontmatter in your CLAUDE.md — plans will then be browsable in Obsidian with Dataview, tags, and graph view.

• If frontmatter is not configured and mode is init → Expected, proceed normally.
• If frontmatter is already configured and mode is init → Show current config in preflight, then Step 2 of Init mode handles the replace-or-keep flow.
• If project is not linked and mode is status → Note it in the status report, suggest running /obsidian-link to link.

The preflight should be lightweight and informational — never block a mode from running (except when vault path is missing). Its purpose is context, not gatekeeping.

Link Mode (default)

Step 1: Resolve vault + ensure directories

Confirm vault path, then: mkdir -p "<vault>/ClaudeCode/{Agents/global,Skills/global,Plans}"

Step 2: Plans symlink

Check ~/.claude/plans:

• Missing → ln -sf "<vault>/ClaudeCode/Plans" "$HOME/.claude/plans"
• Exists, target matches vault → skip (OK)
• Exists, points elsewhere → warn and skip (do not overwrite)

Step 3: Detect project

git rev-parse --show-toplevel → basename, lowercased. If not in a git repo, ask for project name and root path.

Step 4: Link project agents (idempotent)

If <repo>/.claude/agents/ exists, mkdir -p "<vault>/ClaudeCode/Agents/<project>".

For each .md file, before creating a symlink, check existing state:

target="<vault>/ClaudeCode/Agents/<project>/<file>"
expected="<repo>/.claude/agents/<file>"
current=$(readlink "$target" 2>/dev/null)

if [ "$current" = "$expected" ]; then
  # already_linked — skip
elif [ -L "$target" ]; then
  # wrong target — overwrite (count as updated)
  ln -sf "$expected" "$target"
else
  # new — create
  ln -sf "$expected" "$target"
fi

Track counts: new, already_linked, updated.

Step 5: Link project skills (idempotent)

Same pattern as Step 4, but for each skill directory in <repo>/.claude/skills/.

Step 6: Sync global skills into ~/.claude

For each skill directory in <vault>/ClaudeCode/Skills/global/ (must contain SKILL.md):

• If ~/.claude/skills/<name> doesn't exist → create symlink
• If it exists and points to vault → skip
• If it exists and points elsewhere → skip (never overwrite non-Obsidian skills)

Step 7: Sync global agents into ~/.claude

• ~/.claude/agents doesn't exist → ln -sf "<vault>/ClaudeCode/Agents/global" "$HOME/.claude/agents"
• Exists as symlink to vault → skip
• Exists as real directory or wrong symlink → warn, skip

Step 8: Broken symlink detection

After all linking:

find "<vault>/ClaudeCode/Agents" "<vault>/ClaudeCode/Skills" -type l ! -exec test -e {} \; -print

Report broken links with their targets. Suggest cleanup but never auto-delete.

Step 9: Generate index note

Write <vault>/ClaudeCode/README.md (fully regenerated each run):

---
type: index
title: Claude Code Hub
updated: <YYYY-MM-DD>
tags:
  - claude-code
  - index
---

# Claude Code Hub

## Projects

| Project | Agents | Skills | Status |
|---------|--------|--------|--------|
| <name> | <count> | <count> | OK / N broken |

## Global

| Type | Name | Link |
|------|------|------|
| Agent | <name> | [[<name>]] |
| Skill | <name> | [[<name>]] |

## Plans

<count> plan files in ClaudeCode/Plans/

Use [[wikilinks]] for all agent and skill names so Obsidian's graph view connects them. Scan Agents/ and Skills/ subdirs (excluding global/) for project names.

Step 10: Report

obsidian-link: <project>

  Vault:   <vault-path>
  Project: <project> (<repo-root>)

  Agents: <N> new, <N> already linked
  Skills: <N> new, <N> already linked
  Broken: none | <N> broken (listed above)
  Plans:  ~/.claude/plans → vault (OK) | WARNING: points elsewhere | created

  Global: <N> skills synced, agents symlink OK
  Index:  ClaudeCode/README.md updated

Status Mode

Scans the vault's ClaudeCode/ directories (not the filesystem) to report health of all linked projects.

Steps

1. Resolve vault path (same as Link mode Step 1)
2. Scan <vault>/ClaudeCode/Agents/ and Skills/ for project subdirs (excluding global/)
3. For each project: count symlinks, count broken symlinks, report health
4. Check global sync: agents symlink target, skills presence
5. Check Plans symlink
6. Regenerate index note (Step 9 from Link mode)

Report format

obsidian-link status

  Vault: <vault-path>

  Projects:
    project-a  — 16 agents, 1 skill, 0 broken
    project-b  — 4 agents, 2 skills, 1 broken
      broken: project-b/old-agent.md → /path/that/moved

  Global: agents OK, 3 skills synced
  Plans:  ~/.claude/plans → vault (OK)
  Index:  ClaudeCode/README.md updated

Unlink Mode

Removes a project's symlinks from the vault. Never deletes repo files.

Steps

1. Resolve vault path
2. Validate <project> exists in <vault>/ClaudeCode/Agents/<project> or Skills/<project>
3. Show what will be removed (counts per directory)
4. Ask for explicit user confirmation before proceeding
5. Remove the project's directories:

   rm -rf "<vault>/ClaudeCode/Agents/<project>"
   rm -rf "<vault>/ClaudeCode/Skills/<project>"
   

   These dirs contain only symlinks — repo source files are untouched.
6. Regenerate index note

Report format

obsidian-link unlink: <project>

  Removed: 16 agent links, 1 skill link
  Source files in <repo-root> are untouched.
  Index: ClaudeCode/README.md updated

Init Mode

Interactively configures ~/.claude/CLAUDE.md so that Claude always adds Obsidian-friendly frontmatter when creating plan files. This is a one-time setup — safe to re-run (idempotent).

Step 1: Resolve vault path

Same as Link mode. Needed to generate the correct ~/.claude/plans symlink path in instructions.

Step 2: Check for existing frontmatter instructions

Search ~/.claude/CLAUDE.md for a ## Plan Files section (or similar frontmatter block referencing plans/).

• Found → Show the user the current config, ask if they want to replace or keep it.
• Not found → Proceed to Step 3.

Step 3: Ask the user about their frontmatter fields

Present a conversational prompt like:

I'll add instructions to your global CLAUDE.md so plan files always get Obsidian-friendly frontmatter.

Here are some common fields — which would you like?

Default fields (always included unless explicitly removed):

Optional fields (suggest these, let user pick):

Let the user add, remove, or rename fields freely. They may also suggest entirely custom fields — accept any valid YAML key.

Step 4: Ask about filename convention

Present the current convention (or a sensible default):

Filename format: <project>-<kebab-slug>.md (3–6 words) e.g. myapp-user-auth-oauth-flow.md, backend-stripe-billing-integration.md

Want to adjust this? (e.g. date prefix, different separator, no project prefix)

Accept the user's preference or confirm the default.

Step 5: Generate the CLAUDE.md section

Build a ## Plan Files section containing:

1. The filename convention
2. A YAML frontmatter template with the chosen fields
3. Brief inline comments showing example values

Example output (will vary based on user choices):

## Plan Files

When writing plan files (in `~/.claude/plans/`, which symlinks to `ObsidianVault/Plans/`), always include this frontmatter so they're browsable in Obsidian:

Filename should be kebab-case, prefixed with the project name, 3-6 words total, reflecting the plan content. E.g. `myapp-user-auth-oauth-flow.md`, `backend-stripe-billing-integration.md`.

\```yaml
---
type: plan
id: <project>-<kebab-slug>
title: <human-readable title>
status: draft | approved | done
projects:
  - <project ID>
tags:
  - plan
  - <project tag>
created: "<YYYY-MM-DD>"
---
\```

Step 6: Preview and confirm

Show the user the exact block that will be inserted (or will replace the existing block). Ask for confirmation before writing.

Step 7: Write to CLAUDE.md

• If replacing an existing ## Plan Files section: replace from ## Plan Files to the next ## heading (or end of file).
• If inserting new: add before the first --- horizontal rule after the initial sections, or append before # Code Style if that heading exists. Use best judgement to place it logically.
• Never overwrite unrelated sections.

Step 8: Report

obsidian-link init: complete

  CLAUDE.md: ~/.claude/CLAUDE.md updated
  Section:   ## Plan Files (inserted | replaced)
  Fields:    type, title, status, created, tags, id, projects
  Filename:  <project>-<kebab-slug>.md

  Plans will now include Obsidian frontmatter automatically.

Notes

• Never auto-delete broken symlinks — report them and let the user decide
• Never overwrite non-Obsidian configs — if ~/.claude/agents is a real directory, warn and skip
• Idempotent by design — running Link mode repeatedly produces the same result with accurate counts
• Index note is disposable — fully regenerated each run, safe to delete manually