Crowdin MCP by usefulapi
REMOTE · CROWDIN.USEFULAPI.IO
MCP server for Crowdin — projects, files, strings, translation progress, tasks, and members.
Available components
Last scanned (2 minutes ago)
Scores higher than 4% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Documents and Files
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. How we score → Why this is hard to score →
Endpoint Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not yet verified: we couldn't confirm whether this endpoint requires it. View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability0
- Transport check failed: declared streamable-http, but the endpoint redirected instead of responding directly. See how to fix → View diagnostics → Fail
Schema Quality & AI Usability0
- Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.Unverified
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage0
- Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Tool Safety0
- Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Capabilities0
- Capabilities not yet verified: we couldn't read the endpoint's capabilities.Unverified
Unverified: 5 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.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 1 Nov 26 −62
- Endpoint reachability: reachable → not serving MCP ▼ security
- Stability: pass → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Authorization: pass → unverified ▼ security
- Schema quality: 100 → unverified ▼ functional
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- 31 Oct 26 +3
- Authorization: partial → pass ▲ security
- MCP protocol: fail → pass ▲ functional
- New prompt “add_a_source_string_or_a_translation” functional
- New prompt “browse_the_files_and_branches_of_a_project” functional
- New prompt “check_translation_progress_by_language” functional
- New prompt “review_source_strings_and_their_context” functional
- New prompt “see_open_tasks_and_who_has_them” functional
- MCP protocol version: 2025-06-18 → 2025-11-25 functional
- Server version: 1.31.0 → 1.33.0 functional
- Server version: 1.30.0 → 1.31.0 functional
- Server version: 1.29.2 → 1.30.0 functional
- 30 Oct 26 0
- Server version: 1.29.1 → 1.29.2 functional
- Server version: 1.29.0 → 1.29.1 functional
- 29 Oct 26 0
- Server version: 1.28.0 → 1.29.0 functional
- Server version: 1.27.0 → 1.28.0 functional
- 28 Oct 26 +1
- Stability: 0.97 → pass security
- Server version: 1.25.0 → 1.27.0 functional
- 27 Oct 26 0
- Server version: 1.24.0 → 1.25.0 functional
- 26 Oct 26 −1
- Stability: pass → 0.93 functional
- 25 Oct 26 +1
- Stability: 0.97 → pass security
- Server version: 1.23.0 → 1.24.0 functional
- Server version: 1.22.0 → 1.23.0 functional
- Server version: 1.21.3 → 1.22.0 functional
- Server version: 1.21.2 → 1.21.3 functional
- Server version: 1.21.0 → 1.21.2 functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://crowdin.usefulapi.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=usefulapi.io | CN=WE1,O=Google Trust Services,C=US | 13 Sept 2026 | 12 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | d9be3287b0fde9630e825ba1f79bff3f |
| SANs: usefulapi.io, *.usefulapi.io | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of crowdin.usefulapi.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 38690 | 8 | Verified |
| usefulapi.io. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Inconclusive
We could not reach the endpoint well enough to judge its authorisation posture.
| Result | Inconclusive |
|---|---|
| HTTP status | 302 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://crowdin.usefulapi.io/mcp | Redirected | 302 | https://usefulapi.io/crowdin/ |
| http (plaintext) | http://crowdin.usefulapi.io/mcp | Inconclusive | 302 | http://crowdin.usefulapi.io/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
crowdin_add_string Add source string ~131
Adds a source string to a file in a Crowdin project (additive). Crowdin API: POST /projects/{projectId}/strings.
| Name | Type | Req | Description |
|---|---|---|---|
| context | string | – | Optional context shown to translators. |
| fileId | integer | yes | 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 | yes | Numeric project id (path). |
| text | string | yes | The source string text. |
No output schema declared.
No examples provided.
crowdin_add_translation Add translation ~126
Adds a translation for a source string in a target language (additive). Crowdin API: POST /projects/{projectId}/translations.
| Name | Type | Req | Description |
|---|---|---|---|
| languageId | string | yes | Target language id, e.g. "fr", "de", "uk". |
| pluralCategoryName | string | – | Plural form, e.g. "one", "few", "many", "other". |
| projectId | integer | yes | Numeric project id (path). |
| stringId | integer | yes | Id of the source string to translate. |
| text | string | yes | The translation text. |
No output schema declared.
No examples provided.
crowdin_get_language_progress Language translation progress ~85
Per-target-language translation & approval completion percentages for a project — the headline localization status. Crowdin API: GET /projects/{projectId}/languages/progress.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max rows (max 500, default 25). |
| offset | integer | – | Rows to skip (default 0). |
| projectId | integer | yes | Numeric project id. |
No output schema declared.
No examples provided.
crowdin_get_project Get project ~52
Get a single project's details by id (settings, languages, counts). Crowdin API: GET /projects/{projectId}.
| Name | Type | Req | Description |
|---|---|---|---|
| projectId | integer | yes | Numeric project id (from crowdin_list_projects). |
No output schema declared.
No examples provided.
crowdin_list_branches List branches ~90
List version branches in a project (id, name, title). Crowdin API: GET /projects/{projectId}/branches.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max rows (max 500, default 25). |
| name | string | – | Filter by branch name. |
| offset | integer | – | Rows to skip (default 0). |
| projectId | integer | yes | Numeric project id. |
No output schema declared.
No examples provided.
crowdin_list_directories List directories ~106
List directories (folders) in a project (id, name, path). Crowdin API: GET /projects/{projectId}/directories.
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | Numeric project id. |
No output schema declared.
No examples provided.
crowdin_list_files List files ~118
List source files in a project (id, name, path, type, status). Crowdin API: GET /projects/{projectId}/files.
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | Numeric project id. |
No output schema declared.
No examples provided.
crowdin_list_members List project members ~93
List members of a project (id, username, role, permissions). Crowdin API: GET /projects/{projectId}/members.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max rows (max 500, default 25). |
| offset | integer | – | Rows to skip (default 0). |
| projectId | integer | yes | Numeric project id. |
| search | string | – | Search members by name/username/email. |
No output schema declared.
No examples provided.
crowdin_list_projects List projects ~107
List projects the token can access (id, name, sourceLanguageId, targetLanguageIds). Good first call to discover project ids. Crowdin API: GET /projects.
| Name | Type | Req | Description |
|---|---|---|---|
| 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). |
No output schema declared.
No examples provided.
crowdin_list_strings List source strings ~142
List source strings in a project (id, text, identifier, context). Crowdin API: GET /projects/{projectId}/strings.
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | Numeric project id. |
No output schema declared.
No examples provided.
crowdin_list_supported_languages List supported languages ~68
Crowdin's catalog of supported languages (id, name, locale, twoLettersCode). Crowdin API: GET /languages.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max rows (max 500, default 25). |
| offset | integer | – | Rows to skip (default 0). |
No output schema declared.
No examples provided.
crowdin_list_tasks List tasks ~111
List translation/proofreading tasks in a project (id, title, status, assignees). Crowdin API: GET /projects/{projectId}/tasks.
| Name | Type | Req | Description |
|---|---|---|---|
| assigneeId | integer | – | Filter by assignee user id. |
| limit | integer | – | Max rows (max 500, default 25). |
| offset | integer | – | Rows to skip (default 0). |
| projectId | integer | yes | Numeric project id. |
| status | string | – | Filter by task status. |
No output schema declared.
No examples provided.
How do I install the Crowdin MCP by usefulapi server?
Crowdin MCP by usefulapi is a hosted endpoint at https://crowdin.usefulapi.io/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.
remote · crowdin.usefulapi.io
claude mcp add --transport http io-usefulapi-crowdin 'https://crowdin.usefulapi.io/mcp'
What is the Crowdin MCP by usefulapi server?
Crowdin MCP by usefulapi is listed in the public MCP registry as io.usefulapi/crowdin. MCP server for Crowdin, projects, files, strings, translation progress, tasks, and members. This page covers its hosted endpoint (https://crowdin.usefulapi.io/mcp).
Is the Crowdin MCP by usefulapi server safe to use?
Crowdin MCP by usefulapi scores 18 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 Crowdin MCP by usefulapi server expose?
Crowdin MCP by usefulapi exposes 12 tools: crowdin_list_projects, crowdin_get_project, crowdin_list_files, crowdin_list_branches, crowdin_list_directories, and 7 more. Their descriptions and schemas cost roughly 1,229 tokens of context every time the server is loaded.
Does the Crowdin MCP by usefulapi server require authentication?
Its publisher declares no required credentials for Crowdin MCP by usefulapi. We have not been able to confirm that against the live endpoint, and a server can require authorisation without declaring it here.
Is the Crowdin MCP by usefulapi server still maintained?
Crowdin MCP by usefulapi is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.