# OpenCrab

> Use this tool when you need to manage complex knowledge structures and relationships across multiple databases. OpenCrab provides a unified interface for hybrid searches, entity management, and impact analysis, solving problems of data siloing and fragmented knowledge management. It is ideal for use cases requiring integration of graph, vector, and document databases within a multi-space ontological framework.

Canonical page: https://skillsregistry.net/skills/alexai-mcp-opencrab  
JSON: https://api.skillsregistry.net/v1/skills/alexai-mcp-opencrab

## Description

OpenCrab provides an MCP interface for the MetaOntology OS, enabling structured knowledge management across graph, vector, and document databases. It allows agents to perform hybrid searches, manage complex entity relationships, and conduct impact analysis within a multi-space ontological framework.

## Trust

- **Trust score (0–1):** 0.36
- **Verification tier:** scanned
- **Last scanned:** 2026-09-02

## Facts

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

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/qs2hbhi1kj)
- **Repository:** <https://github.com/AlexAI-MCP/OpenCrab>

## 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": "alexai-mcp-opencrab"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/alexai-mcp-opencrab` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/alexai-mcp-opencrab/pull`

---
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