# Usefulapi Crowdin MCP server

Source: https://glimind.com/server/mcp-registry%2Fio.usefulapi%2Fcrowdin
Registry id: `mcp-registry/io.usefulapi/crowdin`
Status: auth-required (checked 2026-10-27T02:29:58.336Z)

## Verdict

Usefulapi Crowdin MCP server answered 100% of Glimind's liveness checks over 30 days, better than 42% of MCP servers, with 60 ms median handshake and 0 outages in 90 days. Its agent-readiness grade is A (96/100) across 12 tools, costing an agent about 2,627 tokens to load. Checked every few minutes; no tool is ever called.

## Measurements (30 days)

| Metric | Value | Better than |
|---|---|---|
| Uptime, 30 days | 100% | 42% of MCP servers |
| Median handshake latency | 60 ms | 88% of MCP servers |
| p95 handshake latency | 263 ms | — |
| Checks in 30 days | 215 | — |
| Outages, 90 days | 0 | — |
| Median recovery | — | — |
| Agent-readiness score | 96/100 (A) | 82% of MCP servers |
| Tools | 12 | — |
| Tool-list size for an agent | ~2,627 tokens | 48% of MCP servers |
| Days observed | 28 | — |

## Install

```json
{
  "mcpServers": {
    "usefulapi-crowdin-mcp-server": {
      "type": "http",
      "url": "https://crowdin.usefulapi.io/mcp"
    }
  }
}
```

Claude Code:

```sh
claude mcp add --transport http usefulapi-crowdin-mcp-server https://crowdin.usefulapi.io/mcp
```

## Tools (12)

- `crowdin_add_string`: Adds a source string to a file in a Crowdin project (additive). Crowdin API: POST /projects/{projectId}/strings.
- `crowdin_add_translation`: Adds a translation for a source string in a target language (additive). Crowdin API: POST /projects/{projectId}/translations.
- `crowdin_get_language_progress`: Per-target-language translation & approval completion percentages for a project — the headline localization status. Crowdin API: GET /projects/{projectId}/langu
- `crowdin_get_project`: Get a single project's details by id (settings, languages, counts). Crowdin API: GET /projects/{projectId}.
- `crowdin_list_branches`: List version branches in a project (id, name, title). Crowdin API: GET /projects/{projectId}/branches.
- `crowdin_list_directories`: List directories (folders) in a project (id, name, path). Crowdin API: GET /projects/{projectId}/directories.
- `crowdin_list_files`: List source files in a project (id, name, path, type, status). Crowdin API: GET /projects/{projectId}/files.
- `crowdin_list_members`: List members of a project (id, username, role, permissions). Crowdin API: GET /projects/{projectId}/members.
- `crowdin_list_projects`: List projects the token can access (id, name, sourceLanguageId, targetLanguageIds). Good first call to discover project ids. Crowdin API: GET /projects.
- `crowdin_list_strings`: List source strings in a project (id, text, identifier, context). Crowdin API: GET /projects/{projectId}/strings.
- `crowdin_list_supported_languages`: Crowdin's catalog of supported languages (id, name, locale, twoLettersCode). Crowdin API: GET /languages.
- `crowdin_list_tasks`: List translation/proofreading tasks in a project (id, title, status, assignees). Crowdin API: GET /projects/{projectId}/tasks.

Measured by Glimind (https://glimind.com): MCP handshake + tool list only, no tool is ever called. CC BY 4.0.