# Onyx Knowledge Base

> Use this tool when you need to integrate AI-powered semantic search and chat capabilities into your organization's knowledge base, enabling teams to access relevant documents and receive comprehensive answers without switching contexts. The Onyx Knowledge Base tool solves problems of information retrieval and knowledge management, providing a bridge between clients and knowledge bases through a configurable interface. It accepts environment variables as inputs and outputs relevant documents and answers, making it ideal for use cases where seamless access to organizational knowledge is crucial.

Canonical page: https://skillsregistry.net/skills/lupuletic-onyx-knowledge-base  
JSON: https://api.skillsregistry.net/v1/skills/lupuletic-onyx-knowledge-base

## Description

Onyx MCP Server provides a bridge between MCP-compatible clients and Onyx knowledge bases, enabling powerful semantic search and chat capabilities. Developed by lupuletic, this TypeScript implementation offers two main tools: a search tool for retrieving relevant documents with configurable context windows, and a chat tool that leverages Onyx's RAG capabilities for comprehensive answers. The server connects to the Onyx API using environment variables for configuration, making it particularly valuable for teams who need to access their organizational knowledge through AI assistants without switching contexts.

## Trust

- **Trust score (0–1):** 0.64
- **Verification tier:** scanned
- **Last scanned:** 2026-09-02

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** ai-ml
- **Updated:** 2026-09-02

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/lupuletic-onyx-knowledge-base)
- **Repository:** <https://github.com/lupuletic/onyx-mcp-server>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "lupuletic-onyx-knowledge-base"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/lupuletic-onyx-knowledge-base` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/lupuletic-onyx-knowledge-base/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt