TranslationOS API
What TranslationOS API is
TranslationOS API provides programmatic access to localization services for content in over 200 languages. It supports human translation requests and Lara AI translation for text and documents, along with document and website translation, translation memory, glossary tools, and API access. Documentation covers string segmentation, extraction, and reinsertion for 71 file formats, plus repetition matching. Workflows can include service-level-agreement quotes, progress monitoring, quality and productivity tracking, custom service types, and webhook notifications. Listed connectors include Contentful, Contentstack, Sanity, Iterable, SendGrid, Marketo Engage, Crowdin, XTM, Phrase, Lokalise, GitHub, Salesforce Knowledge, and Figma. Requests use an x-api-key header over HTTPS with TLS 1.2 or higher. Payloads are limited to 64 MB, and the rate limit is 30 requests per second for a specified source, host, and path combination. Pricing is on request and depends on word count, language pair, and service type.
Who it suits
TranslationOS API suits enterprises managing and scaling localization through software integrations. It fits teams needing human or AI translation, file-format handling, workflow monitoring, and webhooks.
What it does well
- Supports localization into over 200 languages
- Offers human and Lara AI translation
- Handles 71 documented file formats
- Provides connectors for content and business tools
- Uses HTTPS, TLS 1.2+, and signed callbacks
What to know first
- Pricing requires an account manager
- Requests are limited to 64 MB
- Rate limit is 30 requests per second
- API credentials must be requested
Verdict
TranslationOS API combines translation services with integration and workflow controls for enterprise localization. Its documented payload and rate limits should be checked against your implementation needs.
Facts from TranslationOS API's own pages
- Access
- Customers can request API credentials from their account manager or by emailing [email protected]. · os.help.translated.com, 12 Oct 2026
- API access
- To request API credentials, contact an account manager or email [email protected]. · os.help.translated.com, 12 Oct 2026
- API limits
- The API accepts payloads up to 64 MB and allows up to 30 HTTP requests per second for the same source IP, host, and URL path combination. · api.translated.com, 12 Oct 2026
- API security
- The API is served exclusively over HTTPS and supports TLS 1.2 or higher; API requests use an x-api-key header for authentication. · api.translated.com, 12 Oct 2026
- Document translation
- Yes · api.translated.com, 22 Sept 2026
- Features
- The API documentation lists repetition matching, string segmentation and extraction, translation quotes, real-time monitoring, custom service types, and webhook notifications. · os.help.translated.com, 12 Oct 2026
- File formats
- The API documentation lists string segmentation, extraction, and reinsertion for 71 file formats. · os.help.translated.com, 12 Oct 2026
- Founded
- 1999 · api.translated.com, 4 Oct 2026
- Glossary tools
- Yes · api.translated.com, 22 Sept 2026
- Headquarters
- Rome, Italy · api.translated.com, 4 Oct 2026
- Human and AI translation
- The API supports human translation requests and Lara AI text and document translation. · api.translated.com, 12 Oct 2026
- Integrations
- The FAQ says users can connect a CMS through Connectors and can keep multiple connectors active with separate configurations and workflows. · os.help.translated.com, 12 Oct 2026
- Intended users
- Translated describes TranslationOS as a platform that enables enterprises to manage and scale their translation needs through its technology and services. · os.help.translated.com, 12 Oct 2026
- Maker
- Translated says it was founded in 1999 by linguist Isabelle Andrieu and computer scientist Marco Trombetti. · translated.com, 12 Oct 2026
- Notable limits
- The API documentation states a 64 MB maximum request payload and a rate limit of 30 HTTP requests per second for the same source IP, host, and URL path combination. · api.translated.com, 12 Oct 2026
- Pricing
- Pricing is based on word count, language pair, and service type; the FAQ directs customers to their account manager for specific rates. · os.help.translated.com, 12 Oct 2026
- Purpose
- TranslationOS API provides a way to localize content into over 200 languages using Translated’s services. · api.translated.com, 12 Oct 2026
- Security
- The API is available only over HTTPS with TLS 1.2 or higher, and callback events include an RS256-signed JWT that recipients can verify with Translated’s public key. · api.translated.com, 12 Oct 2026
- Security certifications
- Translated’s Trust Center lists GDPR, ISO 9001:2015, ISO/IEC 27001:2013 and 2022, PCI DSS, and SOC 2 Type 1. · trust.translated.com, 12 Oct 2026
- Support
- The API documentation lists [email protected] for API support and [email protected] for general support. · os.help.translated.com, 12 Oct 2026
- Translation memory
- Yes · api.translated.com, 22 Sept 2026
- Translation modes
- It supports human translation requests and Lara AI translation for text and documents. · api.translated.com, 12 Oct 2026
- Website translation
- Yes · api.translated.com, 22 Sept 2026
- What it does
- The API provides access to Translated’s services for localizing content into over 200 languages. · api.translated.com, 12 Oct 2026
Where TranslationOS API stands on Freedom251
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