# io.usefulapi/crowdin (remote · crowdin.usefulapi.io)

MCP server for Crowdin — projects, files, strings, translation progress, tasks, and members.

- Trust score: 73/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `crowdin.usefulapi.io`: 73/100 (this document), [markdown](https://verifymcp.io/servers/io-usefulapi-crowdin/crowdin.md), [page](https://verifymcp.io/servers/io-usefulapi-crowdin/crowdin)

## Channel facts

- Endpoint: `https://crowdin.usefulapi.io/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.1`

## 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 2026-08-03.

- **Endpoint Security**: 78/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token.
  - HTTPS not yet verified: we couldn't determine whether a plaintext access path exists.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
  - The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 1229 tokens (~102/item across 12 items; 12 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### Claude

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

### Codex

```toml
[mcp_servers.io-usefulapi-crowdin]
url = "https://crowdin.usefulapi.io/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-usefulapi-crowdin": {
      "type": "remote",
      "url": "https://crowdin.usefulapi.io/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add io-usefulapi-crowdin --url https://crowdin.usefulapi.io/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  io-usefulapi-crowdin:
    url: "https://crowdin.usefulapi.io/mcp"
```

### Other

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

### 2026-08-02 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 72, +3)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 69, −2)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 70, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-07-27 (score 69, +57)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 12)

First indexed and scored.

## MCP tools (12)

### `crowdin_list_projects` (~107 tokens)

List projects

List projects the token can access (id, name, sourceLanguageId, targetLanguageIds). Good first call to discover project ids. Crowdin API: GET /projects.

Input parameters:

- `groupId` (integer): Filter by group id (Enterprise).
- `hasManagerAccess`: 1 = only projects where you are a manager.
- `limit` (integer): Max rows (max 500, default 25).
- `offset` (integer): Rows to skip (default 0).

### `crowdin_get_project` (~52 tokens)

Get project

Get a single project's details by id (settings, languages, counts). Crowdin API: GET /projects/{projectId}.

Input parameters:

- `projectId` (integer, required): Numeric project id (from crowdin_list_projects).

### `crowdin_list_files` (~118 tokens)

List files

List source files in a project (id, name, path, type, status). Crowdin API: GET /projects/{projectId}/files.

Input parameters:

- `branchId` (integer): Filter by branch id.
- `directoryId` (integer): Filter by directory id.
- `filter` (string): Filter files by name substring.
- `limit` (integer): Max rows (max 500, default 25).
- `offset` (integer): Rows to skip (default 0).
- `projectId` (integer, required): Numeric project id.

### `crowdin_list_branches` (~90 tokens)

List branches

List version branches in a project (id, name, title). Crowdin API: GET /projects/{projectId}/branches.

Input parameters:

- `limit` (integer): Max rows (max 500, default 25).
- `name` (string): Filter by branch name.
- `offset` (integer): Rows to skip (default 0).
- `projectId` (integer, required): Numeric project id.

### `crowdin_list_directories` (~106 tokens)

List directories

List directories (folders) in a project (id, name, path). Crowdin API: GET /projects/{projectId}/directories.

Input parameters:

- `branchId` (integer): Filter by branch id.
- `directoryId` (integer): Filter by parent directory id.
- `limit` (integer): Max rows (max 500, default 25).
- `offset` (integer): Rows to skip (default 0).
- `projectId` (integer, required): Numeric project id.

### `crowdin_list_strings` (~142 tokens)

List source strings

List source strings in a project (id, text, identifier, context). Crowdin API: GET /projects/{projectId}/strings.

Input parameters:

- `branchId` (integer): Filter by branch id.
- `croql` (string): Crowdin Query Language filter, e.g. count of words <= 5.
- `fileId` (integer): Filter by source file id.
- `filter` (string): Filter strings by text or identifier substring.
- `limit` (integer): Max rows (max 500, default 25).
- `offset` (integer): Rows to skip (default 0).
- `projectId` (integer, required): Numeric project id.

### `crowdin_get_language_progress` (~85 tokens)

Language translation progress

Per-target-language translation & approval completion percentages for a project — the headline localization status. Crowdin API: GET /projects/{projectId}/languages/progress.

Input parameters:

- `limit` (integer): Max rows (max 500, default 25).
- `offset` (integer): Rows to skip (default 0).
- `projectId` (integer, required): Numeric project id.

### `crowdin_list_tasks` (~111 tokens)

List tasks

List translation/proofreading tasks in a project (id, title, status, assignees). Crowdin API: GET /projects/{projectId}/tasks.

Input parameters:

- `assigneeId` (integer): Filter by assignee user id.
- `limit` (integer): Max rows (max 500, default 25).
- `offset` (integer): Rows to skip (default 0).
- `projectId` (integer, required): Numeric project id.
- `status` (string): Filter by task status.

### `crowdin_list_members` (~93 tokens)

List project members

List members of a project (id, username, role, permissions). Crowdin API: GET /projects/{projectId}/members.

Input parameters:

- `limit` (integer): Max rows (max 500, default 25).
- `offset` (integer): Rows to skip (default 0).
- `projectId` (integer, required): Numeric project id.
- `search` (string): Search members by name/username/email.

### `crowdin_list_supported_languages` (~68 tokens)

List supported languages

Crowdin's catalog of supported languages (id, name, locale, twoLettersCode). Crowdin API: GET /languages.

Input parameters:

- `limit` (integer): Max rows (max 500, default 25).
- `offset` (integer): Rows to skip (default 0).

### `crowdin_add_string` (~131 tokens)

Add source string

Adds a source string to a file in a Crowdin project (additive). Crowdin API: POST /projects/{projectId}/strings.

Input parameters:

- `context` (string): Optional context shown to translators.
- `fileId` (integer, required): Id of the source file to add the string to.
- `identifier` (string): Optional unique string identifier / key.
- `isHidden` (boolean): Hide the string from translators.
- `maxLength` (integer): Max allowed translation length.
- `projectId` (integer, required): Numeric project id (path).
- `text` (string, required): The source string text.

### `crowdin_add_translation` (~126 tokens)

Add translation

Adds a translation for a source string in a target language (additive). Crowdin API: POST /projects/{projectId}/translations.

Input parameters:

- `languageId` (string, required): Target language id, e.g. "fr", "de", "uk".
- `pluralCategoryName` (string): Plural form, e.g. "one", "few", "many", "other".
- `projectId` (integer, required): Numeric project id (path).
- `stringId` (integer, required): Id of the source string to translate.
- `text` (string, required): The translation text.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/io-usefulapi-crowdin/crowdin#diagnostics

## Score history

- 2026-08-03: 73
- 2026-08-02: 73
- 2026-08-01: 72
- 2026-07-31: 72
- 2026-07-30: 69
- 2026-07-29: 71
- 2026-07-28: 70
- 2026-07-27: 69
- 2026-07-26: 12

## Links

- Remote endpoint: https://crowdin.usefulapi.io/mcp
- Repository: https://github.com/m190/usefulapi-mcp
- Changelog RSS feed: https://verifymcp.io/servers/io-usefulapi-crowdin/crowdin/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/io-usefulapi-crowdin/crowdin/changelog.json
- HTML version of this page: https://verifymcp.io/servers/io-usefulapi-crowdin/crowdin