Your AI assistant is only as good as what it knows.
General-purpose AI models are trained on everything — which means they're deep experts in nothing. KBrain gives your AI agent access to real, curated, human expertise.
Browse the knowledge marketplace → Explore brainsWhat happens when your AI doesn't know enough
General-purpose LLMs are impressive, but niche requirements, proprietary methodologies, and domain-specific frameworks often cause hallucinations or weak answers.
Fine-tuning and custom RAG can solve this, but both require engineering and ongoing maintenance.
KBrain is the third option: subscribe to an expert knowledge base and plug it into your assistant in minutes.
How it works for AI builders and assistants
Step 1 — Find the right brain
Browse the KBrain marketplace by category, topic, or use case.
Step 2 — Subscribe and get your API key
Subscribe monthly and receive secure credentials tied to your subscribed brain.
Step 3 — Plug it in
Use MCP with Claude, call REST from custom agents, or wire it into your existing workflow.
What you can plug KBrain into
- Claude (Anthropic) — Add KBrain as an MCP server for tool-based retrieval.
- ChatGPT / OpenAI — Use KBrain REST APIs as custom tool/function context.
- LangChain / LlamaIndex — Wrap KBrain as a retriever in existing chains.
- n8n / Zapier — Add expert knowledge lookup steps with no-code automations.
- Custom agents — Any HTTP client can query the brain endpoint.
What makes KBrain different from other knowledge sources
Human-curated, not scraped. Every brain is published by a domain expert.
Retrieval-optimized for AI. KBrain indexes for semantic relevance, not document storage only.
Access-controlled. You subscribe and access via keys; brains are not publicly indexed.
No infrastructure to maintain. No vector DB, embedding pipelines, or re-index cron jobs required.
Use cases
- Security and compliance agents
- Research assistants
- Customer-facing AI tools
- Internal knowledge management
- Developer tools and coding agents
Frequently asked questions
What is a KBrain brain?
A structured, retrieval-optimized knowledge base published by a domain expert and queryable via API.
How is this different from giving my agent a PDF?
A brain is semantically indexed and returns relevant excerpts on demand.
What AI tools does KBrain work with?
Any tool with API/MCP support, including Claude, ChatGPT, LangChain, LlamaIndex, n8n, Zapier, and custom stacks.
How is billing handled?
Monthly subscription per brain. Cancel anytime.
Is the knowledge I query kept private?
Yes. Queries are private and not shared with other subscribers.
What if I need a brain that doesn't exist yet?
Request one on the marketplace or publish a private brain for your own team.
Give your AI agents the expertise they're missing.
Stop patching hallucinations. Start subscribing to knowledge.