Operates Weaviate Cloud or self-hosted collections with weaviate-client v4: list/create, import, semantic/hybrid/keyword search, Query Agent. Use when the user names Weaviate. Not for local Chroma (chroma), Pinecone serverless (pinecone), or FAISS-only kNN. Never hardcode WEAVIATE_API_KEY.
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Operates Weaviate Cloud or self-hosted collections with weaviate-client v4: list/create, import, semantic/hybrid/keyword search, Query Agent. Use when the user names Weaviate. Not for local Chroma (chroma), Pinecone serverless (pinecone), or FAISS-only kNN. Never hardcode WEAVIATE_API_KEY.
Comprehensive access to Weaviate vector databases: search operations, natural language queries, schema inspection, data exploration, filtered fetching, collection creation, and data imports.
When to Use
Inspect Weaviate collections, schemas, or data distribution.
Run semantic, hybrid, keyword, filtered, or Query Agent searches against Weaviate.
Import CSV, JSON, JSONL, or PDF data into a Weaviate collection.
Create example data or a new collection for a Weaviate-backed workflow.
If the user does not have an instance yet, direct them to the cloud console to register and create a free sandbox: Weaviate Cloud.
Prerequisites
Environment Variables
Required (must be set before any script runs):
Variable
Purpose
WEAVIATE_URL
Weaviate Cloud cluster URL
WEAVIATE_API_KEY
Weaviate API key
External Provider Keys (auto-detected — set only the keys your collections use):
See references/environment_requirements.md for the full list of supported providers and their variable names. Common ones include OPENAI_APIKEY, COHERE_APIKEY, ANTHROPIC_APIKEY, and AWS_ACCESS_KEY / AWS_SECRET_ACCESS_KEY for the text2vec_weaviate vectorizer.
HARD RULE: Never hardcode secrets in scripts or commit them to version control. Use environment variables or a .env file. All examples in this skill use YOUR_KEY placeholders.
Windows Host (PowerShell)
The primary host is Windows with PowerShell. When setting environment variables in the current session:
All uv run commands below work identically in PowerShell and bash. Multi-line commands using \ (backslash continuation) should be replaced with backtick ` in PowerShell, or run as a single line.
Python / uv
Scripts are executed via uv run from this skill's scripts/ directory. Ensure uv is installed and available on PATH.
Procedure
Step 0 — Load the right reference before acting
Each operation has a dedicated reference file under references/. Load the reference file that matches the operation before running the corresponding script. This ensures you pass correct flags and understand output shape.
Operation
Script
Reference to load first
List collections
scripts/list_collections.py
references/list_collections.md
Get collection details
scripts/get_collection.py
references/get_collection.md
Explore collection data
scripts/explore_collection.py
references/explore_collection.md
Create collection
scripts/create_collection.py
references/create_collection.md
Import data
scripts/import.py
references/import_data.md
Create example data
scripts/example_data.py
references/example_data.md
Query Agent — Ask
scripts/ask.py
references/ask.md
Query Agent — Search
scripts/query_search.py
references/query_search.md
Hybrid search
scripts/hybrid_search.py
references/hybrid_search.md
Semantic search
scripts/semantic_search.py
references/semantic_search.md
Keyword search
scripts/keyword_search.py
references/keyword_search.md
Fetch & filter
scripts/fetch_filter.py
references/fetch_filter.md
Also load references/environment_requirements.md whenever you need to configure or troubleshoot provider API keys.
Step 1 — Discover available collections
Always start here if you don't know what exists:
uv run scripts/list_collections.py
Load references/list_collections.md for flag details and output format.
Step 2 — (Optional) Create example data if the instance is empty
If no collections exist and the user wants toy data to experiment with, ask the user first, then:
uv run scripts/example_data.py
Load references/example_data.md before running.
Step 3 — Inspect a collection's schema
uv run scripts/get_collection.py --name "COLLECTION_NAME"
Load references/get_collection.md for property-level details, vectorizer config, replication factor, and multi-tenancy status.
Step 4 — Explore data distribution and content
uv run scripts/explore_collection.py "COLLECTION_NAME"
Load references/explore_collection.md to understand top values, data distribution, and sample objects.
Step 5 — Create a collection (required before importing CSV/JSON/JSONL)
HARD RULE: Do not specify a vectorizer unless the user explicitly requests one. The default text2vec_weaviate is used automatically.
Load references/create_collection.md for full property type reference and options.
Step 6 — Import data into an existing collection
uv run scripts/import.py "data.csv" --collection "CollectionName"
Supported formats: CSV, JSON, JSONL, PDF.
HARD RULE: For PDF imports, the collection is created automatically — skip Step 5. For all other formats, the collection must already exist.
Load references/import_data.md for format-specific flags, batch sizing, and error handling.
Step 7 — Choose and run the right search
User intent
Script
Reference
AI-powered direct answer with source citations across multiple collections
scripts/ask.py
references/ask.md
Browse/explore raw objects across multiple collections
scripts/query_search.py
references/query_search.md
General search (default when unsure)
scripts/hybrid_search.py
references/hybrid_search.md
Conceptually similar content (intent > keywords)
scripts/semantic_search.py
references/semantic_search.md
Exact terms, IDs, SKUs, specific text patterns
scripts/keyword_search.py
references/keyword_search.md
Retrieve specific objects by ID or strict filtered subsets
scripts/fetch_filter.py
references/fetch_filter.md
Default choice:hybrid_search.py — provides the best balance of semantic understanding and exact keyword matching. Use this when unsure which search type to pick.
Load the matching reference file before running any search script to confirm required flags (e.g., --query, --collection, --limit, --json).
Output Formats
All scripts support:
Markdown tables — default and recommended for interactive use.
JSON — pass --json flag for programmatic consumption.
Pitfalls
WEAVIATE_URL not set → Set the environment variable (see Prerequisites). In PowerShell, confirm with $env:WEAVIATE_URL.
Collection not found → Run scripts/list_collections.py to see available collections. Collection names are case-sensitive.
Authentication error → Check both WEAVIATE_API_KEY and any vectorizer provider keys (e.g., OPENAI_APIKEY, COHERE_APIKEY). See references/environment_requirements.md.
Importing into a non-existent collection → For CSV/JSON/JSONL, create the collection first (Step 5). Only PDF import auto-creates the collection.
Specifying a vectorizer when not asked → HARD RULE: Never set a vectorizer unless the user explicitly requests one. The default text2vec_weaviate is used.
Wrong search type → If results are poor, switch to hybrid_search.py as the safe default. Use keyword_search.py only for exact matches; semantic_search.py only for conceptual similarity.
Multi-line commands in PowerShell → Backslash \ line continuation is bash syntax. In PowerShell use backtick ` or run as a single line.
Data exposure risk → Data import, collection creation, and Query Agent operations can change or expose user data. Always confirm the target instance and collection name before running scripts.
No backup coverage → These scripts do not replace broader data-governance, backup, or production migration procedures.
Verification
Verify environment is configured
uv run scripts/list_collections.py
Expected: a markdown table (or JSON with --json) listing collections, or an empty result if the instance is new. No WEAVIATE_URL not set or authentication errors.
Verify a collection exists and has data
uv run scripts/get_collection.py --name "COLLECTION_NAME"
uv run scripts/explore_collection.py "COLLECTION_NAME"
Expected: schema details (properties, data types, vectorizer config) from get_collection.py, and data distribution / sample objects from explore_collection.py.
Verify a search returns results
uv run scripts/hybrid_search.py --collection "COLLECTION_NAME" --query "example query" --limit 5
Expected: a markdown table with result rows containing object properties and a score/distance column. If using --json, valid JSON array output.
Verify import succeeded
uv run scripts/explore_collection.py "COLLECTION_NAME"
Expected: object count and sample rows reflecting the imported data.
Related Skills
databases category siblings — for other vector and relational database operations.
data-import tagged skills — for ETL pipelines feeding Weaviate.