Ops Deck Lite

Lightweight agent productivity toolkit: semantic code search with embeddings and a categorized prompt library. Two services, ~200MB RAM, zero cloud dependencies. Your agent searches code by meaning (not grep) and reuses proven prompts instead of writing from scratch every time.

Ops Deck Lite — Code Search + Prompt Library

Two high-impact services that make any AI agent dramatically more efficient: semantic code search and a categorized prompt library. Lightweight (~200MB RAM), local-only, zero cloud costs.

For the full operational stack (agent intel, social pipeline, dev journal, monitoring), see ops-deck.

What You Get

1. Semantic Code Search (:5204)

Search your entire codebase by meaning, not just text matching. Ask "authentication middleware" and find the actual auth code even if it's called verifyToken or checkSession.

• Hybrid search: vector similarity + keyword matching
• Local embeddings: qwen3-embedding:8b via Ollama (free, private)
• Code summaries: each chunk gets a natural language summary for better semantic matching
• Fast: <100ms search across 96K+ code chunks
• Nightly re-index: cron at 4am keeps the index fresh

bash

# Search
curl -s -X POST http://localhost:5204/api/search \
  -H "Content-Type: application/json" \
  -d '{"query":"database connection pooling","mode":"hybrid","limit":10}'

# Health check
curl -s http://localhost:5204/api/health

# Re-index (with summaries)
curl -X POST http://localhost:5204/api/index?summarize=true

# Filter by project
curl -s -X POST http://localhost:5204/api/search \
  -H "Content-Type: application/json" \
  -d '{"query":"error handling","mode":"hybrid","project":"my-api","limit":5}'

Modes:

• hybrid (default, best) — combines vector similarity with text matching
• code — raw code matching only
• summary — search against natural language summaries

2. Prompt Library (:5202)

Categorized, searchable prompt templates. Stop writing the same prompts from scratch every session.

bash

# List all prompts
curl -s http://localhost:5202/api/prompts | python3 -c "
import sys,json
[print(f'{p[\"id\"]}: {p[\"title\"]} [{p[\"category\"]}]') for p in json.load(sys.stdin)]
"

# Get a specific prompt
curl -s http://localhost:5202/api/prompts/<id>

# Create a prompt
curl -s -X POST http://localhost:5202/api/prompts \
  -H "Content-Type: application/json" \
  -d '{"title":"Code Review","category":"coding","content":"Review this code for..."}'

Prerequisites

• Node.js 18+ (for prompt library)
• Python 3.10+ with FastAPI and uvicorn (for code search)
• Ollama with qwen3-embedding:8b model
• PM2 for process management
• SQLite (for code search index, no external DB)

Setup

1. Install dependencies

bash

npm install -g pm2
pip install fastapi uvicorn aiofiles

# Ollama embedding model
ollama pull qwen3-embedding:8b

2. Create the Code Search service

bash

mkdir -p pipeline/work/code-search
cd pipeline/work/code-search

# The server needs:
# - server.py (FastAPI app)
# - code_index.db (SQLite, auto-created on first index)
# - Ollama running locally for embeddings

Key code search server features:

• Walks your project directories, splits code into chunks
• Generates embeddings via Ollama API (localhost:11434)
• Stores chunks + embeddings + summaries in SQLite
• FastAPI with POST /api/search, GET /api/health, POST /api/index

3. Create the Prompt Library

bash

mkdir -p pipeline/work/prompt-library/backend
cd pipeline/work/prompt-library/backend

# Express server with:
# - GET /api/prompts (list all)
# - GET /api/prompts/:id (get one)
# - POST /api/prompts (create)
# - PUT /api/prompts/:id (update)
# - DELETE /api/prompts/:id (delete)
# - SQLite or JSON file storage

4. PM2 config

javascript

// ecosystem.config.cjs
module.exports = {
  apps: [
    {
      name: 'code-search',
      cwd: './pipeline/work/code-search',
      script: 'server.py',
      interpreter: 'python3',
      autorestart: true,
    },
    {
      name: 'prompt-library-api',
      cwd: './pipeline/work/prompt-library/backend',
      script: 'server.js',
      autorestart: true,
    },
  ]
};

5. Start and index

bash

pm2 start ecosystem.config.cjs
pm2 save

# Initial code index (takes a few minutes depending on codebase size)
curl -X POST http://localhost:5204/api/index?summarize=true

# Set up nightly re-index
(crontab -l 2>/dev/null; echo "0 4 * * * curl -s -X POST http://localhost:5204/api/index?summarize=true > /dev/null") | crontab -

Agent Integration

Add to your AGENTS.md or TOOLS.md:

markdown

## Code Search API (USE THIS FIRST)

Before you grep, before you spawn a sub-agent, before you read 10 files: HIT THIS API.

curl -s -X POST http://localhost:5204/api/search \
  -H "Content-Type: application/json" \
  -d '{"query":"your search here","mode":"hybrid","limit":10}'

## Prompt Library

Before writing a prompt from scratch, check if one exists:

curl -s http://localhost:5202/api/prompts

Resource Usage

Service	RAM	CPU	Disk
Code Search	~150MB	<1% idle	~50MB index per 100K chunks
Prompt Library	~50MB	<1% idle	<1MB
Ollama (embedding model)	~4GB	Spikes during indexing	~4GB model

Total: ~200MB for the services (Ollama runs independently and is shared with other tools).

Why Not Just Grep?

Grep finds exact text matches. Code search finds meaning:

Query	Grep finds	Code Search finds
"auth middleware"	Files containing "auth middleware"	verifyToken(), checkSession(), requireAuth()
"database pooling"	Files containing "database pooling"	createPool(), getConnection(), pg.Pool config
"error handling"	Files containing "error handling"	try/catch blocks, error middleware, custom Error classes

The embeddings understand code semantics. That's the whole point.