# Contextcore

> Contextcore — lucifer-ux-contextcore. Use this tool when you need to optimize AI model performance and reduce token usage. ContextCore solves the problem of excessive token consumption by leveraging hybrid search capabilities that combine BM25 and embeddings, enabling efficient information retrieval. It takes in AI model queries as input and outputs relevant search results, making it ideal for use cases where token savings are crucial, such as large-scale AI deployments.

Canonical page: https://skillsregistry.net/skills/lucifer-ux-contextcore  
JSON: https://api.skillsregistry.net/v1/skills/lucifer-ux-contextcore

## Description

ContextCore: An MCP server for Claude (or any AI tool) that enables massive token saving through hybrid search (BM25 + Embeddings)

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **Category:** ai-ml
- **Updated:** 2026-09-20

## Source

- **Source listing:** [GitHub](https://github.com/lucifer-ux/Contextcore)

## 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": "lucifer-ux-contextcore"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/lucifer-ux-contextcore` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/lucifer-ux-contextcore/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