# Arc UI (remote · uiarc.dev)

React components and blocks with motion. Search docs, props and shadcn install commands.

- Trust score: 32/100 (low)
- Change this week: −31
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-07

## Components

- remote · `uiarc.dev`: 32/100 (this document), [markdown](https://verifymcp.io/servers/dev-uiarc-arc/api-mcp.md), [page](https://verifymcp.io/servers/dev-uiarc-arc/api-mcp)

## Channel facts

- Endpoint: `https://uiarc.dev/api/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-07.

- **Endpoint Security**: 81/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - The endpoint enforces authorisation, advertised via RFC 9728 protected-resource metadata.
  - HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
  - The authorisation server supports Client ID Metadata Documents, the current MCP client-registration mechanism.
- **Transport & Reachability**: 0/100
  - Transport blocked by authentication: the endpoint requires auth we don't have to verify streamable-http.
- **Schema Quality & AI Usability**: 0/100
  - Schema blocked by authentication: the endpoint requires auth we don't have to read it.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 0/100
  - Tool coverage blocked by authentication: the endpoint requires auth we don't have to read its tools.
- **Tool Safety**: 0/100
  - Tool safety blocked by authentication: the endpoint requires auth we don't have to read its tools.
- **Capabilities**: 0/100
  - Capabilities blocked by authentication: the endpoint requires auth we don't have to read them.

**Unverified: 6 categories.** Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

### How do I install the Arc UI MCP server?

Arc UI is a hosted endpoint at https://uiarc.dev/api/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http dev-uiarc-arc 'https://uiarc.dev/api/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "dev-uiarc-arc": {
      "url": "https://uiarc.dev/api/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "dev-uiarc-arc": {
      "type": "http",
      "url": "https://uiarc.dev/api/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.dev-uiarc-arc]
url = "https://uiarc.dev/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dev-uiarc-arc": {
      "type": "remote",
      "url": "https://uiarc.dev/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add dev-uiarc-arc --url 'https://uiarc.dev/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  dev-uiarc-arc:
    url: "https://uiarc.dev/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "dev-uiarc-arc": {
      "Transport": "http",
      "Url": "https://uiarc.dev/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add dev-uiarc-arc -t streamable-http -u 'https://uiarc.dev/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "dev-uiarc-arc": {
      "type": "http",
      "url": "https://uiarc.dev/api/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-03 (score 32, −32)

- [security regression] Endpoint reachability: reachable → behind authorisation
- [security regression] Tool safety: pass → unverified
- [security regression] Stability: 0.07 → unverified
- [security regression] Transport: pass → unverified
- [security improvement] Authorization: partial → pass
- [security] First check of Authorization: pass
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-10-01 (score 64, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-09-30 (score 63)

First indexed and scored.

## MCP tools (5)

### `list_components` (~116 tokens)

List Arc components

List Arc components and blocks with name, description, tier, and links. Filter by category (Actions, Inputs, Disclosure, Feedback, Data, Text, Special, Blocks), tag, tier (free or pro), or kind (component or block).

Input parameters:

- `category` (string): One of: Actions, Inputs, Disclosure, Feedback, Data, Text, Special, Blocks
- `kind` (string)
- `tag` (string): A tag such as motion, form, menu, or overlay
- `tier` (string)

### `search_components` (~79 tokens)

Search Arc components

Search Arc components and blocks by intent, e.g. "confirm destructive action", "date range", or "pricing page". Returns the best matches first.

Input parameters:

- `kind` (string)
- `limit` (integer)
- `query` (string, required): What you want to build or the component you are looking for
- `tier` (string)

### `get_component` (~130 tokens)

Get an Arc component

Get full documentation for one Arc component or block: when to use it, when not to (with the better alternative), usage and extra examples, props, keyboard, accessibility, motion, responsive behavior, performance, keywords, related items, and the install command. structuredContent.api carries the same fields as JSON. With an Arc Pro token (Authorization header), Pro items also include their full source files in structuredContent.files.

Input parameters:

- `id` (string, required): Component or block id, e.g. button, date-picker, or signup-form
- `kind` (string): Only needed when an id exists as both

### `get_install_command` (~77 tokens)

Get the Arc install command

Get the shadcn CLI command that installs one or more Arc components or blocks, including shared foundation tokens and Arc dependencies, plus setup notes. Free items always; Pro items (@uiarc-pro registry) when the connection carries an Arc Pro token.

Input parameters:

- `ids` (array, required): Component or block ids
- `runner` (string)

### `get_skill` (~371 tokens)

Get an Arc skill

Get one Arc skill file as markdown: rules for building with Arc. Free skills: SKILL (entry point: workflow, principles, never-do list, and quick decisions); INSTRUCTIONS (short always-on rules for agents.md, claude.md, or cursor rules); checklist (the review loop to run before finishing, with grep sweeps); components (choosing the right component or block by job, with ids); composition (page containers, dashboards, marketing sections, states, react correctness); copy (sentence case, no eyebrows or em dashes, verbs on buttons, honest claims); design (color, type, surfaces, concentric radii, spacing, and icons); motion (motion tokens, spring choice, patterns with code, reduced motion); accessibility (focus without rings, semantics, keyboard, and announcements); responsive (widths to check, overflow, tables, and touch targets); example-settings (a worked account settings page); example-pricing (a worked pricing section with plans, comparison, and faq); example-dashboard (a worked analytics overview with kpis, chart, and table). Pro skills (arc-pro, full-page-generation, page-composition, design-system-generation, refactor-to-arc, motion-recommendations, responsive-optimization, accessibility-audit) are returned in full when the connection carries an Arc Pro token (otherwise signed-in Pro members download them at /api/skills and this tool returns where).

Input parameters:

- `id` (string, required): One of: SKILL, INSTRUCTIONS, checklist, components, composition, copy, design, motion, accessibility, responsive, example-settings, example-pricing, example-dashboard, arc-pro, full-page-generation,…

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/dev-uiarc-arc/api-mcp#diagnostics

## Score history

- 2026-10-07: 32
- 2026-10-06: 32
- 2026-10-04: 32
- 2026-10-03: 32
- 2026-10-02: 64
- 2026-10-01: 64
- 2026-09-30: 63

## Common questions

### What is the Arc UI MCP server?

Arc UI is an MCP server listed in the public MCP registry as dev.uiarc/arc. React components and blocks with motion. Search docs, props and shadcn install commands. This page covers its hosted endpoint (https://uiarc.dev/api/mcp).

### Is the Arc UI MCP server safe to use?

Arc UI scores 32 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Arc UI MCP server expose?

Arc UI exposes 5 tools: list_components, search_components, get_component, get_install_command, get_skill. Their descriptions and schemas cost roughly 773 tokens of context every time the server is loaded.

### Does the Arc UI MCP server require authentication?

Yes. Arc UI asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.

### Is the Arc UI MCP server still maintained?

Arc UI is still listed as active in the MCP registry. We last reached this channel on 7 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://uiarc.dev/api/mcp
- Repository: https://github.com/kuratlielia/arc-library
- Website: https://uiarc.dev/
- Changelog RSS feed: https://verifymcp.io/servers/dev-uiarc-arc/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/dev-uiarc-arc/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/dev-uiarc-arc/api-mcp