# context-index-mcp

> Use this tool when you need to quickly retrieve context for AI agents by mapping keywords to file paths, solving issues of slow information retrieval and enabling fast data access. It takes in JSON indexes and keyword queries as inputs, and outputs relevant file paths, making it ideal for applications where speed and efficiency are crucial. This tool is particularly useful in contexts where embeddings or vector databases are not feasible or required.

Canonical page: https://skillsregistry.net/skills/butler-kasagi-context-index-mcp  
JSON: https://api.skillsregistry.net/v1/skills/butler-kasagi-context-index-mcp

## Description

A lightweight MCP server that maps keywords to file paths instantly using a JSON index, enabling fast context retrieval for AI agents without embeddings or vector databases.

## Trust

- **Trust score (0–1):** 0.69
- **Verification tier:** scanned
- **Last scanned:** 2026-08-31

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** database
- **Updated:** 2026-08-31

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/glmfc5ymj2)
- **Repository:** <https://github.com/butler-kasagi/context-index-mcp>

## 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": "butler-kasagi-context-index-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/butler-kasagi-context-index-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/butler-kasagi-context-index-mcp/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