# Echo

> Echo — huanhuanhuanfff-echo. Use this tool when you need to retrieve specific information from a local Markdown knowledge base, as it solves problems of efficient document search and retrieval by utilizing BM25 and vector hybrid search algorithms. It takes in search queries as input and returns relevant original text, file paths, and line numbers as output. Ideal for use cases where quick access to local documentation and knowledge bases is required.

Canonical page: https://skillsregistry.net/skills/huanhuanhuanfff-echo  
JSON: https://api.skillsregistry.net/v1/skills/huanhuanhuanfff-echo

## Description

本地 Markdown 知识库检索 MCP：BM25 + 向量混合检索，返回原文、路径与行号。Local evidence-based Markdown retrieval with SQLite.

## Trust

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

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** MIT
- **Updated:** 2026-09-27

## Source

- **Source listing:** [GitHub](https://github.com/HuanHuanHuanFFF/Echo)

## 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": "huanhuanhuanfff-echo"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/huanhuanhuanfff-echo` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/huanhuanhuanfff-echo/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