# Smartcat > Smartcat is a hosted AI translation and localisation platform with projects, translation memories, glossaries and a linguist marketplace. Agents reach it through a REST API with webhooks, a real-time translation endpoint and a command-line tool. - Canonical: https://www.anchorterminal.com/tools/smartcat - Pricing: https://www.anchorterminal.com/tools/smartcat#pricing - Reviews: https://www.anchorterminal.com/tools/smartcat#reviews - Markdown: https://www.anchorterminal.com/tools/smartcat.md (~9,050 tokens) - Slim: https://www.anchorterminal.com/tools/smartcat.min.md (~2,130 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/tools/smartcat.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key) - Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data) - Updated: 2026-10-30 ## Overview **Grade C · 54.3/100 · rank #810 of 1223 · #10 in Translation · not agent-ready · confidence medium** ## Assessment Smartcat's REST API covers projects, documents, translation memories, glossaries, webhooks and a real-time translate call, with published rate limits, Retry-After on 429 and an audit log endpoint. Keys are account-wide with no documented scopes, the status page lists two incidents of an hour or more in 90 days, and API access is listed only from the $60,000-a-year Anticipate plan. ## Facts | Field | Value | | --- | --- | | Vendor | Smartcat Platform Inc. (https://www.smartcat.com) | | Kind | HTTP API | | Category | Translation (https://www.anchorterminal.com/categories/translation) | | Transport | HTTP | | Endpoint | `https://smartcat.ai/api/integration` | | Auth | API key · A company account is needed, and freelancer accounts can't use the API. An administrator creates API keys under Settings, API, and several keys can exist. Every call sends HTTP Basic authentication with the account ID as user name and the key as password. No scopes, expiry or read-only keys are documented. The CLI stores the workspace ID and key in a local config file or reads `SMARTCAT_API_TOKEN`. | | Pricing | Paid ($100 / mo) · API access is listed from the Anticipate plan, $60,000 a year with 2,000,000 Smartwords per the help centre (20 October 2026). Adapt is $1,200 and Accelerate $24,000 a year, without API access in the plan table. The pricing page (26 October 2026) shows Adapt from $1,200 and the other plans as custom. Usage is 1 Smartword per source word per target language, with 100 per cent TM matches and repetitions free. A 15-day trial with 15,000 Smartwords needs no card, and the pricing FAQ says it includes API access, which the plan table and trial article don't show (checked 2026-10-29). | | x402 | No · No x402, MPP or L402 in the developer guides, the API reference, the OpenAPI file or the pricing pages (checked 2026-10-29). Plans are billed annually by contract or card. | | Licence | Proprietary service under Smartcat's Terms of Use and Customer Agreement. The PHP client on GitHub is GPL-3.0-or-later, and the CLI ships as closed binaries | | Packages | packagist: `smartcat/smartcat-api` | | Source | https://github.com/smartcatai/SmartCAT-API | | Docs | https://developers.smartcat.com | | llms.txt | not found | | Last release | 2026-10-16 | | GitHub stars | 6 (as of 2026-10-29) | | Surface listed | The REST integration API at `/api/integration/v1` and `/v2`, its real-time translation endpoint and the Smartcat CLI, read from developers.smartcat.com, the OpenAPI file, the help centre and the pricing and legal pages on 29 October 2026. No account was created and no API call was made | | Hosts | Europe `https://smartcat.ai`, Americas `https://us.smartcat.ai`, Asia `https://ea.smartcat.ai`. The account's region is set at signup | | API | OpenAPI 3.0.1, 151 paths and 187 operations, covering accounts, projects, documents, export, files, glossaries and concepts, translation memories, tasks, quotes, invoices, MyTeam, vendors, callbacks, audit logs, Smartwords and smart translation | | Real-time translation | `POST /api/integration/v1/smartTranslation/translate` with `sourceLanguage`, `targetLanguages`, `texts` (with optional `context`), `profile`, `isHtml` and `externalTag`. The profile picks the engine and is made in the web app under Smart translation profiles | | Credentials | HTTP Basic with account ID and API key. Keys are created by an administrator, several per account. No scopes, expiry or read-only keys documented | | Rate limits | 35 requests a second on all `/api/integration/*`, 10 a second on v1 project methods, 5 on v2 project methods, 20 on document export, 30 a minute on translation memory. 429 with Retry-After in seconds | | Pagination | `offset` and `limit` on the v2 project list, `skip` and `limit` on several lists, a cursor (`afterConceptId`, `nextCursor`, `hasMore`) on glossary concepts up to 500 a page, `pageSize` up to 5,000 on audit logs | | Errors | JSON `ErrorResponse` with `type`, `code`, `message` and `requestId`. 400, 403, 404, 409 and 422 documented, 429 with a plain-text body | | Webhooks | One callback URL per account, with events for project status and statistics, document status, XLIFF import, export, LQA report and segment statistics. Best effort, 8 retries with doubling delays from 30 seconds, then dropped. `GET /api/integration/v1/callback/lastErrors` lists failed deliveries | | SDKs and CLI | `smartcat/smartcat-api` 3.0.1 for PHP (14 October 2026, GPL-3.0-or-later). The CLI is downloaded as binaries for Linux, macOS and Windows from S3, with no version shown. A Postman collection on GitHub | | Plans | Adapt $1,200, Accelerate $24,000 and Anticipate $60,000 a year per the help centre, Autonomous custom. API access, the CLI and GitHub integration from Anticipate. 15-day trial with 15,000 Smartwords, no card | | SLA | Standard, Priority and Enterprise SLAs named on the pricing page. No SLA terms or uptime figure found, and the Customer Agreement disclaims all warranties and sells the services as is | | Certifications | SOC 2 Type II claimed on the security programme page (16 August 2024) and the pricing FAQ. No report, trust centre or ISO 27001 certificate found | | Data location | Amazon data centres in the EU, the US and China per the DPA, chosen by the customer's region. Data residency choice is listed on the Autonomous plan | | Status | status.smartcat.ai on Statuspage, with European, American and Asian region components. status.smartcat.com redirects there | | Capabilities | translate.text, translate.documents, translate.glossary | | Tags | hosted, official, closed-source, openapi, webhooks, cli, php, trial, no-card, status-page, soc2, enterprise, sales-led | | JSON | https://www.anchorterminal.com/api/v1/tools/smartcat.json | ## Score breakdown (methodology v0.7, October 2026 research run) Assessed 2026-10-29 from public evidence against the published checklist (https://www.anchorterminal.com/benchmark/#checklist). Confidence: medium. Performance and Task success pending (no score, not in the total); the total is Σ(score × weight) ÷ 80 over the 7 assessed categories. "This run" is each category's share of the 100 points. | Category | Weight | This run | Score (0–100) | Points | | --- | --- | --- | --- | --- | | Reliability | 16% | 20 | 56 | 11.2 | | Performance | 10% | pending | pending | n/a | | Schema & documentation | 13% | 16.2 | 67 | 10.9 | | Agent ergonomics | 13% | 16.2 | 57 | 9.3 | | Security & auth | 14% | 17.5 | 42 | 7.3 | | Payments & pricing | 10% | 12.5 | 25 | 3.1 | | Task success | 10% | pending | pending | n/a | | Maintenance & community | 7% | 8.8 | 69 | 6.0 | | Transparency & trust (editorial 56, provenance 91) | 7% | 8.8 | 74 | 6.5 | | Negative events | up to −15 | up to −15 | none recorded | 0 | | **Total** | | | | **54.3 → C** | ### Why each score - Reliability 56 (checked 2026-10-29): Hosted reading, for the REST API and its real-time translation endpoint. status.smartcat.ai is a Statuspage site with three components, the European, American and Asian regions, and no separate API component (20). Its history lists 11 incidents between 1 August and 29 October 2026. Among them are a 4-hour slowdown on 2 September that could stop changes being saved, an access outage in the Americas from 15:28 to 17:27 UTC on 21 September, and access outages marked critical of 38 minutes on 22 September and about 10 minutes on 10 October. Two incidents of an hour or more count as several majors (0 of 30). Limits are published per method group, 35 requests a second for all integration methods down to 30 a minute for translation memory methods (15). A 429 carries Retry-After in whole seconds, other responses carry `x-rate-limit-remaining` and `x-rate-limit-reset`, and the guide says to wait and retry. Writes take no idempotency key, and the glossary guide warns that a repeated create request makes duplicates (11 of 15). The pricing page names Standard, Priority and Enterprise SLAs, but no SLA document or uptime figure was found, and the Customer Agreement disclaims all warranties and sells the services as is (0). The API is generally available. Only custom document segmentation is labelled experimental (10). - Performance: Pending. Latency is measured per call by our probes, which haven't run yet, so this run doesn't score it. Its weight is shared across the assessed categories until the first probe window closes. - Schema & documentation 67 (checked 2026-10-29): An OpenAPI 3.0.1 file with 151 paths and 187 operations is public at smartcat.com/api/methods/v1/swagger.json behind a Swagger UI. The developer site does not link it, and it declares no security scheme (22 of 25). developers.smartcat.com has no llms.txt or Markdown copies. www.smartcat.com has an llms.txt and Markdown twins of its marketing pages, which don't cover the API (3 of 10). 185 of 187 operations have a one-line summary and 28 a description. The guides explain when to use permanent or temporary projects and the real-time endpoint, with little on when not to call a method (10 of 20). 66 enums and 234 required markers, but four JSON content types per body, multipart uploads whose JSON sits in an unnamed form part, and request bodies marked optional on calls that need them (9 of 15). The guides carry curl examples and a status code table, and 400, 403 and 404 are documented on most operations. The OpenAPI file holds one explicit example and no 429 response (10 of 15). Paths are versioned at v1 and v2, and the changelog is dated with a pending-changes section, though it had no entry between 18 March 2024 and 2 October 2026 (13 of 15). - Agent ergonomics 57 (checked 2026-10-29): API reading of the checklist. `limit`, `skip` and `offset` cap list sizes, the v1 project list has `include` flags for documents, quotes, custom fields and clients, and one translate call takes several texts and target languages. No field selection was found (15 of 25). `offset` and `limit` on the v2 project list, a cursor with `afterConceptId` and `hasMore` on glossary concepts, `pageSize` up to 5,000 on audit logs, and filters by name, creator, assignee, client and `externalTag` (16 of 20). Errors return a JSON `ErrorResponse` with type, code, message and `requestId`, translate marks each failed text with `error`, and a 429 body is plain text (14 of 20). No idempotency keys. Callbacks are retried 8 times over about 2 hours with a `lastErrors` endpoint, and translate charges can be looked up later by `requestUid` (5 of 20). Translate needs a profile ID made in the web app, project creation needs `assignToVendor`, and the only official client is a PHP library besides the CLI binaries and a Postman collection (7 of 15). - Security & auth 42 (checked 2026-10-29): Basic authentication with the account ID and an API key that an administrator creates under Settings, API. Several keys can exist, but no scopes, expiry or per-key permissions are documented, and revocation is not described in the reviewed documentation. No query-string secret option was found (15 of 30). Each key reaches the whole workspace, with no read-only key. Delete calls for projects, documents and translation memories take no confirmation. Sandbox workspaces are listed only from the Anticipate plan (5 of 20). The API returns machine and human translations and strings written by linguists, and no guidance on untrusted content was found (3 of 15). `GET /api/integration/v1/audit/logs` returns events with user, type and payload, filterable by date. The security programme page says user activity logs are kept up to 1 year, and the Smartwords report records each translate call by `requestUid` (12 of 15). No security.txt on www.smartcat.com or developers.smartcat.com, and no disclosure policy, bug bounty or public advisories were found. SOC 2 Type II is claimed on the security programme page and the pricing FAQ, with no report or trust centre found. Penetration test results are available on request under NDA (7 of 20). - Payments & pricing 25 (checked 2026-10-29): No x402, MPP or L402 (0). Plan prices are public. The help centre (20 October 2026) gives Adapt $1,200, Accelerate $24,000 and Anticipate $60,000 a year with 100,000, 1,000,000 and 2,000,000 Smartwords, while the pricing page (26 October 2026) shows Adapt from $1,200 and the rest as custom. No top-up price per Smartword was found, so plan-only credit (10). A 15-day trial with 15,000 Smartwords and no card. The pricing FAQ says the trial includes API access, while the plan table and the help centre list API access only from Anticipate, and the trial article doesn't mention the API, so 5 points are withheld for the conflict (15 of 20). A person signs up in a browser and an administrator creates the key (0). - Task success: Pending. Task success needs the category task suites run through each tool, which haven't run yet, so this run doesn't score it. Its weight is shared across the assessed categories until then. A data provider's data-quality score is published on its listing now and becomes half of this category when it's scored. - Maintenance & community 69 (checked 2026-10-29): The latest API change is the charges method of 16 October 2026 (30). Three dated changelog entries in 90 days, on 2, 14 and 16 October 2026 (20). Closed service with a public changelog, a support address on it and a help centre that says replies come within one business day. On GitHub, the PHP client's issues from 2021 to 2024 and a February 2026 report about the CLI install steps have no reply, while the PHP 8.4 issue was closed on 14 October 2026 (8 of 15). One official client, `smartcat/smartcat-api` 3.0.1 for PHP of 14 October 2026, and CLI binaries with no version number on the download page (8 of 15). The PHP client has no CI workflow in the repository, and Dependabot bumps for guzzle and psr7 from July and August 2026 are still open (3 of 10). - Transparency & trust 74 (checked 2026-10-29): Closed service with published Terms of Use (18 September 2026) and Customer Agreement (22 September 2026). The PHP client is GPL-3.0-or-later and the CLI is a closed binary (15). The DPA (17 September 2025) returns or deletes data within 30 days of a written request and lists subprocessors. The privacy policy (23 June 2026) keeps personal data as long as required or advisable. A help article says Smartcat doesn't share user information with third parties, beside a DPA list of eleven AI, OCR and dubbing providers. The claim that customer content never trains public models appears on the pricing page and llms.txt, not in the agreements we read. Data centres are the EU, the US and China in the DPA and Asia in the help centre (14 of 30). The changelog has a pending-changes section and a 2022 deprecation of `GET /v1/project/list` with a September 2022 date, yet that method is still in the OpenAPI file with no deprecated flag. Experimental segmentation may change without notice, and the terms and DPA can be changed by notice (10 of 20). Subprocessors named with location and purpose, region chosen at signup, data residency choice on Autonomous only, and 24 hours' notice of subprocessor changes under the SCC clause (17 of 20). Fix list for a coding agent, everything this grade says the listing lacks, the biggest gain first (20 items): https://www.anchorterminal.com/fixes/smartcat.md (JSON https://www.anchorterminal.com/fixes/smartcat.json) ### What we couldn't check - Whether a trial or Adapt account can create API keys. The pricing FAQ (26 October 2026) says the 15-day trial includes API access, while the plan table and the help centre plan overview (20 October 2026) list API access only on Anticipate and Autonomous, and the trial article (14 October 2026) doesn't mention it. Not settled without signing up, which we didn't do. - "Sandbox access for testing" on the translation API page has one sentence and no detail. The pricing table lists one sandbox workspace, 'isolated environments to test skills and workflows safely', on Anticipate and Autonomous only. No separate sandbox API host was found. - The OpenAPI file is public at smartcat.com/api/methods/v1/swagger.json, reached through the Swagger UI that the PHP client's composer.json names. The developer docs don't link it. - llms.txt exists on www.smartcat.com for the marketing site, with Markdown twins of its pages. developers.smartcat.com/llms.txt answers 404 and the developer docs list no Markdown copies. - The status page at status.smartcat.ai (status.smartcat.com redirects there) disallows /api/ in robots.txt, so incidents were read from /history and three incident pages, not the JSON feed. - unchecked: the SOC 2 Type II report. No trust centre or report link was found, so it stays Smartcat's claim, as do '20% of the Fortune 500', '100x less cost' and the G2 figures. - Whether API keys can be scoped, expired or revoked. Not described in the developer guides or the help centre API article. - The plan prices differ by page. The help centre gives Accelerate $24,000 and Anticipate $60,000 a year, and the pricing page updated 26 October 2026 shows both as custom. - No MCP server was found in the smartcatai repositories or on the site. The official MCP registry wasn't searched again; the founder's listing check of 29 October found none. - The terms forbid robots, spiders, scrapers or other automated access to the platform without authorisation, which matters before any probe outside the API. Recorded as a fact, with no deduction. - Smartcat doesn't do LocalGhost's or letme's job. Anthropic, whose models wrote this grade, is one of Smartcat's listed AI subprocessors, and a 14 October 2026 commit to the PHP client is co-authored by a Claude model. No score depends on either. - slator.com, which reports the Series B and the Series C participants, disallows anthropic-ai in robots.txt and wasn't read. ### Sources - developer getting started: (seen 2026-10-29) - API guides (auth, rate limits, errors, real-time API, callbacks): (seen 2026-10-29) - API reference: (seen 2026-10-29) - API changelog: (seen 2026-10-29) - CLI guide: (seen 2026-10-29) - software localisation projects guide: (seen 2026-10-29) - OpenAPI file: (seen 2026-10-29) - Swagger UI: (seen 2026-10-29) - pricing page: (seen 2026-10-29) - help centre plan overview: (seen 2026-10-29) - help centre trial plan: (seen 2026-10-29) - help centre API guide: (seen 2026-10-29) - help centre Smartwords: (seen 2026-10-29) - help centre personal data: (seen 2026-10-29) - translation API page: (seen 2026-10-29) - security page: (seen 2026-10-29) - security programme: (seen 2026-10-29) - Terms of Use: (seen 2026-10-29) - Customer Agreement: (seen 2026-10-29) - privacy policy: (seen 2026-10-29) - DPA and subprocessors: (seen 2026-10-29) - llms.txt (marketing site): (seen 2026-10-29) - status page: (seen 2026-10-29) - status history: (seen 2026-10-29) - incident, Americas access, 21 September 2026: (seen 2026-10-29) - incident, slow performance, 2 September 2026: (seen 2026-10-29) - GitHub organisation: (seen 2026-10-29) - PHP client repository: (seen 2026-10-29) ## Score history Every move of a score since the listing was graded, newest first, with its cause. A score can't move without an entry here. JSON: https://www.anchorterminal.com/api/v1/tools/smartcat/history.json - 2026-10-29: graded 54.3 C (methodology 0.7) ## Who's behind it (provenance 91/100, checked 2026-10-29) | Check | Finding | Points | | --- | --- | --- | | Legal entity named | Smartcat Platform Inc. | 20/20 | | Domain age | smartcat.com, registered 1999-11-29 (26 years) | 15/15 | | Endpoint on the vendor's domain | smartcat.ai | 15/15 | | Terms of service | published | 10/10 | | Privacy policy | published | 10/10 | | Status page | status.smartcat.ai | 10/10 | | Changelog | published | 10/10 | | security.txt | not found | 0/10 | | People named | 1 named with their role, 1 with a public profile | 10/10 | | Support route | a support address, help pages, a community | 5/5 | The Terms of Use (last updated 18 September 2026) name Smartcat Platform Inc., registered in the United States, or Smartcat Europe B.V., Strawinskylaan 903, 1077 XX Amsterdam, registration 859832880, depending on the agreement. Personal users contract with Smartcat Platform Inc. The notice address is 2810 N Church St PMB 50985, Wilmington, Delaware. Customer accounts also fall under the Customer Agreement (last updated 22 September 2026) and the DPA (last updated 17 September 2025). The privacy policy was last updated 23 June 2026. The API answers on smartcat.ai, us.smartcat.ai and ea.smartcat.ai. smartcat.ai redirects to smartcat.com, and the Swagger UI and OpenAPI file are on smartcat.com. status.smartcat.com redirects to status.smartcat.ai, a Statuspage site whose robots.txt disallows /api/. www.smartcat.com/.well-known/security.txt and developers.smartcat.com/.well-known/security.txt return 404. RDAP for smartcat.com gives a registration date of 1999-11-29. The domain predates the company, which its CEO dates to 2013. firstReleased is the creation date of the smartcatai/SmartCAT-API PHP client repository, the earliest first-hand sign of the API found. ### Terms and privacy, as read A reading by a fixed set of rules, each answered with the vendor's own sentence. Not legal advice. **Terms of service** (https://www.smartcat.com/legal/terms/), not read yet. **Privacy policy** (https://www.smartcat.com/legal/privacy-policy/), not read yet. ## Humans behind the project (researched 2026-10-29 from public pages, not part of the grade) ### Key people - Ivan Smolnikov, Founder and CEO. LinkedIn: https://www.linkedin.com/in/ivan-smolnikov/ - Note: ivan smolnikov is named founder and ceo on smartcat's blog author record and in the series c release of 10 september 2024; his linkedin link is the one in that author record. the about-us page names no people and no team or leadership page was found in the www.smartcat.com sitemaps, so the roster may be incomplete. investors were looked for on smartcat's blog and news sitemaps, the series c release on pr newswire, siliconangle and fj labs' portfolio. slator, which reports the 2020 series b and the series c participants, disallows anthropic-ai in robots.txt and wasn't read, so series b investors and the total raised are left out. - Smartcat Platform Inc. (Smartcat): LinkedIn https://www.linkedin.com/company/smartcatai X https://x.com/Smartcatai GitHub https://github.com/smartcatai ### Ownership and investors - Backed by: Matrix, FJ Labs, Left Lane Capital ### Getting support - Support email: support@smartcat.ai - Help: https://help.smartcat.com/ - Help: https://developers.smartcat.com/ - Community (PHP client issues): https://github.com/smartcatai/SmartCAT-API/issues - Sources: https://www.smartcat.com/blog/behind-our-7m-in-series-a-how-we-make-translations-better-for-everyone/, https://www.smartcat.com/blog/series-c-funding-press-release/, https://www.prnewswire.com/news-releases/smartcat-raises-43-million-series-c-for-expansion-of-enterprise-language-ai-302242152.html, https://siliconangle.com/2024/09/10/enterprise-focused-ai-translation-platform-marketplace-operator-smartcat-raises-43m-funding/, https://www.fjlabs.com/portfolio/smartcat, https://www.smartcat.com/about-us/, https://www.smartcat.com/llms.txt, https://www.smartcat.com/legal/terms/, https://developers.smartcat.com/changelog/, https://api.github.com/orgs/smartcatai ## Live (updated 2026-10-30 02:14 UTC) - Right now: up, HTTP 401, 80 ms, checked 2026-10-30 02:13 UTC (get on `https://smartcat.ai/api/integration`, asks for auth) - Uptime 24h 100.0% (19 probes) · 30 days 100.0% (19 probes) · p50 81 ms · p95 126 ms - Vendor status page: none, All Systems Operational - Always current: https://www.anchorterminal.com/api/v1/live/smartcat.json ## Probe metrics Not measured yet. Our benchmark probes haven't run, so there's no availability, latency or error rate from a run and Performance is pending. Live uptime, where we poll the endpoint, is under Live and doesn't change the score. ## Prices | Item | Price | Unit | Note | | --- | --- | --- | --- | | Adapt (100,000 Smartwords a year, no API access) | $100 | per month (plan) | $1,200 a year billed annually, help centre and pricing page, checked 29 October 2026 | | Accelerate (1,000,000 Smartwords a year, no API access) | $2000 | per month (plan) | $24,000 a year billed annually per the help centre of 20 October 2026; the pricing page shows custom | | Anticipate (2,000,000 Smartwords a year, API access) | $5000 | per month (plan) | $60,000 a year billed annually per the help centre of 20 October 2026; the pricing page shows custom | Across all listings: https://www.anchorterminal.com/prices/index.md ## Strengths - Rate limits published per method group, with Retry-After on 429 and `x-rate-limit-remaining` and `x-rate-limit-reset` on other responses - A public OpenAPI 3.0.1 file with 187 operations at smartcat.com/api/methods/v1/swagger.json - `POST /api/integration/v1/smartTranslation/translate` returns translations synchronously, and a charges method reports the Smartwords each call cost - Webhooks for project, document, export and report events, retried 8 times over about 2 hours, with a `lastErrors` endpoint - `GET /api/integration/v1/audit/logs` returns account events with user, type and payload, filterable by date ## Weaknesses - API access is listed only from the Anticipate plan, $60,000 a year per the help centre, while the pricing FAQ says the trial includes it - API keys are account-wide, with no scopes, expiry or read-only option in the reviewed documentation - The status page lists a 4-hour slowdown on 2 September 2026 and a 2-hour access outage in the Americas on 21 September - The OpenAPI file isn't linked from the developer docs and declares no security scheme - No security.txt, disclosure policy or bug bounty was found, and SOC 2 Type II is a claim on Smartcat's pages - The only official client is the PHP library, and the developer docs have no llms.txt or Markdown copies ## Before you call it (notes for agents) 1. Send `Authorization: Basic` with base64 of `accountId:apiKey` to the account's region host, https://smartcat.ai, https://us.smartcat.ai or https://ea.smartcat.ai. 2. On 429, wait the seconds in Retry-After before retrying. The 429 itself carries no `x-rate-limit-*` headers. 3. Create a smart translation profile in the web app first and pass its ID as `profile` to `smartTranslation/translate`. 4. Store each `requestUid` and look charges up later with `smartTranslation/charges`, since the translate response doesn't include the cost. 5. Treat callbacks as hints and poll project, document or export status as a fallback, because failed deliveries are dropped after the last retry. ## Connect Install: ```bash composer require smartcat/smartcat-api ``` First request: ```bash curl -X POST https://smartcat.ai/api/integration/v1/smartTranslation/translate -u "$SMARTCAT_ACCOUNT_ID:$SMARTCAT_API_KEY" -H 'Content-Type: application/json' -d '{"sourceLanguage": "en", "targetLanguages": ["de"], "profile": "PROFILE_ID", "texts": [{"text": "Your order has shipped."}]}' ``` Through letme: https://letme.dev/smartcat. letme answers with the pick and how to call it direct. How it works: https://www.anchorterminal.com/letme/index.md ## Similar tools Ranked by shared capabilities, then score. Same-category tools with no shared capability key are listed last. | Tool | Grade | Score | Rank | Shared capabilities | x402 | Markdown | | --- | --- | --- | --- | --- | --- | --- | | DeepL API | BB | 72.1 | 118 | translate.text, translate.documents, translate.glossary | no | https://www.anchorterminal.com/tools/deepl-api.md | | Azure Translator | BB | 72 | 119 | translate.text, translate.documents, translate.glossary | no | https://www.anchorterminal.com/tools/azure-translator.md | | Lokalise | BB | 71.3 | 143 | translate.text, translate.glossary, translate.documents | no | https://www.anchorterminal.com/tools/lokalise.md | | Crowdin | B | 69.6 | 195 | translate.text, translate.documents, translate.glossary | no | https://www.anchorterminal.com/tools/crowdin.md | | Amazon Translate | B | 69.6 | 199 | translate.text, translate.documents, translate.glossary | no | https://www.anchorterminal.com/tools/amazon-translate.md | | Google Cloud Translation | B | 68.1 | 261 | translate.text, translate.documents, translate.glossary | no | https://www.anchorterminal.com/tools/google-cloud-translation.md | ## Panel reviews (0) Reviewed by the Anchor panel (https://www.anchorterminal.com/reviewers/index.md): . Desk reviews, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. For a desk review, the outcome says whether the reviewer's questions could be answered from public material: success, partial or failure. How reviews work: https://www.anchorterminal.com/reviews/how-it-works.md ## Notable - The real-time endpoint `POST /api/integration/v1/smartTranslation/translate` takes texts, a source language, target languages and a smart translation profile ID, and returns translations grouped by language with a `requestUid` (source: ) - `POST /api/integration/v1/smartTranslation/charges`, added on 16 October 2026, reports the Smartwords reserved and charged for up to 100 earlier translate calls (source: ) - Rate limits are 35 requests a second for all integration methods, 10 and 5 a second for v1 and v2 project methods, 20 a second for export and 30 a minute for translation memory methods, with Retry-After on 429 (source: ) - An OpenAPI 3.0.1 file with 151 paths and 187 operations sits behind a Swagger UI at smartcat.com/api/methods/, not linked from the developer site (source: ) - Callbacks for project, document, export and report events are retried up to 8 times over about 2 hours, then dropped (source: ) - The help centre lists API access only on the Anticipate plan at $60,000 a year, while the pricing FAQ says the 15-day trial includes it (source: ) - status.smartcat.ai lists 11 incidents from 1 August to 29 October 2026, including 2 hours without access in the Americas on 21 September (source: ) - The DPA lists Google, Amazon, OpenAI, Microsoft, DeepL, ModernMT and Anthropic Claude as AI translation subprocessors, with hosting on Amazon in the EU, the US and China (source: ) - #10 of 13 in Best machine translation APIs for AI agents: https://www.anchorterminal.com/best/translation/index.md - All 78 translation comparisons: https://www.anchorterminal.com/compare/translation/index.md ## Compare - [Amazon Translate vs Smartcat](https://www.anchorterminal.com/compare/amazon-translate-vs-smartcat.md): B 69.6 vs C 54.3 - [Azure Translator vs Smartcat](https://www.anchorterminal.com/compare/azure-translator-vs-smartcat.md): BB 72 vs C 54.3 - [Crowdin vs Smartcat](https://www.anchorterminal.com/compare/crowdin-vs-smartcat.md): B 69.6 vs C 54.3 - [DeepL API vs Smartcat](https://www.anchorterminal.com/compare/deepl-api-vs-smartcat.md): BB 72.1 vs C 54.3 - [Google Cloud Translation vs Smartcat](https://www.anchorterminal.com/compare/google-cloud-translation-vs-smartcat.md): B 68.1 vs C 54.3 - [Lara Translate API vs Smartcat](https://www.anchorterminal.com/compare/lara-translate-vs-smartcat.md): C 61.5 vs C 54.3 - [LibreTranslate vs Smartcat](https://www.anchorterminal.com/compare/libretranslate-vs-smartcat.md): D 49.9 vs C 54.3 - [Lingo.dev vs Smartcat](https://www.anchorterminal.com/compare/lingo-dev-vs-smartcat.md): B 62.4 vs C 54.3 - [Lingvanex Translation API vs Smartcat](https://www.anchorterminal.com/compare/lingvanex-vs-smartcat.md): F 37.3 vs C 54.3 - [Lokalise vs Smartcat](https://www.anchorterminal.com/compare/lokalise-vs-smartcat.md): BB 71.3 vs C 54.3 - [Phrase vs Smartcat](https://www.anchorterminal.com/compare/phrase-vs-smartcat.md): B 64.2 vs C 54.3 - [Smartcat vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/smartcat-vs-systran.md): C 54.3 vs E 40.2 ## Verify this listing For the vendor. The badge or a plain link to this page verifies the listing, from a page on smartcat.com or one of its subdomains, or the README of github.com/smartcatai/SmartCAT-API. It shows the listing is the vendor's and that the vendor knows it's here, and it never changes a grade, rank or review. The vendor sends the page's address to `POST https://www.anchorterminal.com/api/v1/verify` as `{"slug": "smartcat", "url": "…"}`, or calls the `verify_listing` tool at https://www.anchorterminal.com/mcp. We fetch the page once, then again every week; two failed checks in a row and the verification lapses, and a later pass restores it. 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