vector-database-engineer

vector-database-engineer is a skill for Claude Code from tranhieutt/software_development_department. It costs 60 tokens per session (600 once invoked), scanned A, original, MIT.

A guide to storing and searching data by meaning, using vector databases such as Pinecone, Weaviate, Qdrant, Milvus, and pgvector. It covers the building blocks behind semantic search, where matching is based on content rather than exact words.

In plain words
What is it for?
Use it to build RAG systems, which retrieve relevant documents before an AI generates an answer, as well as recommendation tools and similarity search for text, images, or audio.
Why use it?
It helps choose and configure a suitable vector database instead of guessing how to store embeddings or tune searches. It also addresses common retrieval issues such as document splitting, filtering, speed, and scaling.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to build RAG systems, which retrieve relevant documents before an AI generates an answer, as well as recommendation tools and similarity search for text, images, or audio.

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Install with agentmods
npx agentmods add skills/tranhieutt/software_development_department/vector-database-engineer
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add tranhieutt/software_development_department --skill vector-database-engineer
Clone the repo
git clone --depth 1 https://github.com/tranhieutt/software_development_department

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Your own site · 80×15
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Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 600 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00060 $0.00600
Opus 5 $0.00030 $0.00300
Sonnet 5 $0.00012 $0.00120
Haiku 4.5 $0.00006 $0.00060

Measured 5d ago against content hash 02002d9f747b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

vector-database-engineer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/vector-database-engineer/SKILL.md · 71 lines

How it starts

The opening of the file, as written. The whole thing — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Vector Database Engineer

Expert in vector databases, embedding strategies, and semantic search implementation. Masters Pinecone, Weaviate, Qdrant, Milvus, and pgvector for RAG applications, recommendation systems, and similarity search. Use PROACTIVELY for vector search implementation, embedding optimization, or semantic retrieval systems.

Do not use this skill when

  • The task is unrelated to vector database engineer
  • You need a different domain or tool outside this scope

Instructions

  • Clarify goals, constraints, and required inputs.
  • Apply relevant best practices and validate outcomes.
  • Provide actionable steps and verification.

Capabilities

  • Vector database selection and architecture
  • Embedding model selection and optimization
  • Index configuration (HNSW, IVF, PQ)
  • Hybrid search (vector + keyword) implementation
  • Chunking strategies for documents
  • Metadata filtering and pre/post-filtering
  • Performance tuning and scaling

Use this skill when

  • Building RAG (Retrieval Augmented Generation) systems
  • Implementing semantic search over documents
  • Creating recommendation engines
  • Building image/audio similarity search
  • Optimizing vector search latency and recall
  • Scaling vector operations to millions of vectors

Workflow

  1. Analyze data characteristics and query patterns
  2. Select appropriate embedding model
  3. Design chunking and preprocessing pipeline
  4. Choose vector database and index type
  5. Configure metadata schema for filtering
  6. Implement hybrid search if needed
  7. Optimize for latency/recall tradeoffs
  8. Set up monitoring and reindexing strategies

Best Practices

  • Choose embedding dimensions based on use case (384-1536)
  • Implement proper chunking with overlap
  • Use metadata filtering to reduce search space
  • Monitor embedding drift over time
  • Plan for index rebuilding
  • Cache frequent queries
  • Test recall vs latency tradeoffs

When to Use

  • Use when Expert in vector databases, embedding strategies, and semantic search implementation. Masters Pinecone, Weaviate, Qdrant, Milvus, and pgvector for RAG applications, recommendation systems, and similar

Read the full file on GitHub · 71 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 71 lines · 60 tokens per session scan A 02002d9f747b

Subscribe to this mod's changes

vector-database-engineer is a skill published in the GitHub repository tranhieutt/software_development_department (72 stars, last pushed 3mo ago), licensed MIT. It adds 60 tokens to every session and 600 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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