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OpenClaw Joins OpenAI

Hacker News - Sun, 02/15/2026 - 4:44pm
Categories: Hacker News

Show HN: AgentKV – SQLite for AI agent memory (MMAP vector+graph DB)

Hacker News - Sun, 02/15/2026 - 4:42pm

Hi HN! I built AgentKV — an embeddable vector + graph database for AI agents.

The problem: I was building a local LLM assistant and needed to store conversation history + RAG documents. ChromaDB/Pinecone require running servers. FAISS has no persistence. I wanted something that just works like SQLite.

AgentKV is a single-file mmap database with: • Vector search (HNSW index) + graph relations • Crash recovery with CRC-32 checksums • Zero servers, zero config files • Thread-safe concurrent reads • pip install agentkv (Python 3.9+) Real examples in the repo: • Local RAG with Ollama (10 lines) • Multi-turn chatbot with memory • Agent coordination with context graphs

Built in C++20 with mmap + nanobind Python bindings. Benchmarked against FAISS — competitive throughput with built-in persistence.

Open to feedback on the API design and any use cases I'm missing!

PyPI: https://pypi.org/project/agentkv/

Comments URL: https://news.ycombinator.com/item?id=47027887

Points: 1

# Comments: 0

Categories: Hacker News

Rendering the Visible Spectrum

Hacker News - Sun, 02/15/2026 - 4:42pm

Article URL: https://brandonli.net/spectra/doc/

Comments URL: https://news.ycombinator.com/item?id=47027879

Points: 1

# Comments: 0

Categories: Hacker News

Show HN: DetectZeStack – Tech stack detection API with 4 detection layers

Hacker News - Sun, 02/15/2026 - 4:40pm

I built a REST API that detects what technologies any website is running. You give it a URL, it gives you back the full stack: frameworks, CMS, CDNs, analytics, payment processors, etc.

What makes it different from BuiltWith/Wappalyzer:

- 4 detection layers running simultaneously: Wappalyzer fingerprinting (3,500+ signatures), DNS CNAME analysis (29 infrastructure signatures), TLS certificate inspection (8 issuer patterns), and custom HTTP header matching. Most tools only do one of these.

- Batch endpoint: analyze up to 10 URLs in a single request with concurrent processing.

- Compare endpoint: pass 2-10 URLs, get back shared vs unique technologies.

- CPE identifiers on every detected technology, so you can map directly to the NVD vulnerability database for security audits.

- 24-hour smart cache: cached responses return in <5ms and don't count against your quota.

Tech stack: Go, chi router, SQLite, wappalyzergo. Runs on a single Fly.io machine.

Free tier is 100 requests/month. Pro is $29.99 for 25K requests — significantly cheaper than BuiltWith ($295/mo minimum).

Try the live demo on the homepage, or check the API spec: https://detectzestack.fly.dev/openapi.yaml

Happy to answer questions about the detection approach or the architecture.

Comments URL: https://news.ycombinator.com/item?id=47027865

Points: 1

# Comments: 0

Categories: Hacker News

Deep Blue

Hacker News - Sun, 02/15/2026 - 4:38pm
Categories: Hacker News

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