claude-mem/plugin/skills/mem-search/operations/observations.md

Search Observations (Semantic + Full-Text Hybrid)

Search all observations using natural language queries.

When to Use

• User asks: "How did we implement authentication?"
• User asks: "What bugs did we fix?"
• User asks: "What features did we add?"
• Looking for past work by keyword or topic

Command

curl -s "http://localhost:37777/api/search/observations?query=authentication&format=index&limit=5"

Parameters

• query (optional): Natural language search query - uses semantic search (ChromaDB) for ranking with SQLite FTS5 fallback (e.g., "authentication", "bug fix", "database migration"). Can be omitted for filter-only searches.
• format: "index" (summary) or "full" (complete details). Default: "full"
• limit: Number of results (default: 20, max: 100)
• project: Filter by project name (optional)
• dateRange: Filter by date range (optional) - dateRange[start] and/or dateRange[end]
• obs_type: Filter by observation type: bugfix, feature, refactor, decision, discovery, change (optional)
• concepts: Filter by concept tags (optional)
• files: Filter by file paths (optional)

Important: When omitting query, you MUST provide at least one filter (project, dateRange, obs_type, concepts, or files)

When to Use Each Format

Use format=index for:

• Quick overviews
• Finding IDs for deeper investigation
• Listing multiple results
• Token cost: ~50-100 per result

Use format=full for:

• Complete details including narrative, facts, files, concepts
• Understanding the full context of specific observations
• Token cost: ~500-1000 per result

Example Response (format=index)

{
  "query": "authentication",
  "count": 5,
  "format": "index",
  "results": [
    {
      "id": 1234,
      "type": "feature",
      "title": "Implemented JWT authentication",
      "subtitle": "Added token-based auth with refresh tokens",
      "created_at_epoch": 1699564800000,
      "project": "api-server",
      "score": 0.95
    }
  ]
}

How to Present Results

For format=index, present as a compact list:

Found 5 results for "authentication":

1. **#1234** [feature] Implemented JWT authentication
   > Added token-based auth with refresh tokens
   > Nov 9, 2024 • api-server

2. **#1235** [bugfix] Fixed token expiration edge case
   > Handled race condition in refresh flow
   > Nov 9, 2024 • api-server

Include: ID (for follow-up), type emoji (🔴 bugfix, 🟣 feature, 🔄 refactor, 🔵 discovery, 🧠 decision, ✅ change), title, subtitle, date, project.

For complete formatting guidelines, see formatting.md (documentation coming soon).

Filter-Only Examples

Search without query text (direct SQLite filtering):

# Get all observations from November 2025
curl -s "http://localhost:37777/api/search?type=observations&dateRange[start]=2025-11-01&format=index"

# Get all bug fixes from a specific project
curl -s "http://localhost:37777/api/search?type=observations&obs_type=bugfix&project=api-server&format=index"

# Get all observations from last 7 days
curl -s "http://localhost:37777/api/search?type=observations&dateRange[start]=2025-11-11&format=index"

Error Handling

Missing query and filters:

{"error": "Either query or filters required for search"}

Fix: Provide either a query parameter OR at least one filter (project, dateRange, obs_type, concepts, files)

No results found:

{"query": "foobar", "count": 0, "results": []}

Response: "No results found for 'foobar'. Try different search terms."

Tips

1. Be specific: "authentication JWT" > "auth"
2. Start with format=index and limit=5-10
3. Use project filtering when working on one codebase
4. If no results, try broader terms or check spelling

Token Efficiency:

• Start with format=index (~50-100 tokens per result)
• Use format=full only for relevant items (~500-1000 tokens per result)
• See ../principles/progressive-disclosure.md