# Arca

> Use this tool when you need to securely store and manage personal data for AI assistants, solving data privacy and organization challenges. Arca provides a private vault with APIs for structured and semantic data, enabling natural language interaction and automated documentation. Ideal for use cases requiring encrypted data storage and retrieval, such as virtual assistants and personalized AI applications.

Canonical page: https://skillsregistry.net/skills/arca  
JSON: https://api.skillsregistry.net/v1/skills/arca

## Description

Arca provides a private, encrypted vault for storing personal data used by AI assistants. The platform offers Tables API for structured data with SQL queries, Vector API for semantic search with automatic embeddings, and a Skills system that auto-generates documentation. Users can manage structured data and semantic memory through natural language interaction with connected AI assistants.

## Trust

- **Trust score (0–1):** 0.30
- **Verification tier:** unverified
- **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:** [PulseMCP](https://www.pulsemcp.com/servers/arca)

## 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": "arca"
    }
  }
}
```

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