🚧 This portal is under construction. More APIs coming soon.
Welcome to LDX hub
LDX hub is an API platform built by Kawamura International — a translation company with 40 years of language expertise. What started as a mission to move text across languages has grown into something broader: a platform that transforms language data in any direction, at enterprise scale.
The APIs in this portal are ready-to-use endpoints that wrap the core LDX hub engine. No infrastructure setup required — bring your API key and start processing.
What You Can Do Here
StructFlow
Turn unstructured text into structured data. At scale.
Free-form text — medical records, contracts, reviews, HR notes — is everywhere. StructFlow takes that text, applies your schema and instructions, and returns clean, validated JSON. Fast. In parallel. With output structure guaranteed by Structured Outputs technology.
- Works with any major AI engine (Claude, Gemini, GPT, Amazon Nova, Grok, and more)
- Define your output schema from a single sample JSON line
- Built for batch: drop a JSONL file, get a JSONL file back
- 5 years of production-hardened parallel processing under the hood
RefineLoop
Machine translation quality, refined until it converges.
RefineLoop takes MT output in XLIFF format and runs it through an AI review loop — checking for mistranslations, omissions, and additions across three axes. It keeps revising until the AI agrees with itself. That's the convergence.
- Drops into any existing translation pipeline as a single XLIFF step
- Compatible with XTM, memoQ, Trados, and other CAT tools
- Revision history recorded in
alt-transtags — fully auditable - Powered by the same parallel processing engine as StructFlow
Getting Started
Head to the API Reference to explore available endpoints, request/response formats, and authentication details.
If you need an API key or have questions, contact us.
Credits & Pricing
LDX hub uses a credit-based billing system. Credits are consumed based on the engine you choose and the volume of data processed.
Use with AI Assistants (MCP)
LDX hub supports the Model Context Protocol (MCP), allowing you to use StructFlow and RefineLoop directly from AI assistants like Claude Desktop.