Nitro API

Coding & Development AI Models & APIsPaid

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About Nitro API

Nitro API provides human translation services designed specifically for AI agents. It allows agents to autonomously request translations in over 80 languages without requiring an API key or account setup. The service handles payment through MPP-compatible providers and delivers publication-ready translations from professional native-speaker translators. The workflow involves sending a translation request, obtaining a payment token, retrying the request with payment credentials, and polling for results. Translations are returned with preserved markup for complex formats such as HTML, JSON, XML, and iOS strings. The average turnaround time ranges from 2 to 24 hours, making it suitable for production workflows. The API supports pricing estimation and order management endpoints, enabling agents to calculate costs and retrieve translations programmatically.

Key features

Human translation by professional native speakers
Preserves markup in complex formats
Agent-callable without authentication
Pricing estimation endpoint
Order status polling
Multi-language support
Payment handling via MPP providers
No minimum order quantity

Use cases

Translating marketing content for localized campaigns
Localizing legal or financial documents with domain expertise
Adapting creative content to maintain brand voice across languages

Pros

No API key or account setup required for agent calls
Supports 80+ languages with professional native-speaker translators
Preserves complex markup in HTML, JSON, XML, and iOS strings
Autonomous agent workflow with payment handling via MPP providers
No minimum order quantity

Cons

Payment flow currently supports US-issued cards only
Requires byte-for-byte identical retry body for payment submission
Turnaround time of 2-24 hours may not suit real-time needs

Frequently asked questions about Nitro API

What is Nitro API and who is it designed for?

Nitro API is a human translation service built specifically for AI agents, enabling them to autonomously request professional translations without requiring an API key or account setup. It is designed for AI-driven workflows that need high-quality, culturally fluent translations.

How does the payment process work with Nitro API?

The API uses a payment challenge workflow where the initial translation request returns a 402 Payment Required response. The agent then obtains a payment token from an MPP-compatible provider and retries the request with the payment credential. The service currently supports US-issued cards only.

What languages does Nitro API support?

Nitro API supports over 80 languages for translation, catering to a wide range of linguistic needs for AI agents and their applications.

How long does it take to receive translations from Nitro API?

The average turnaround time for translations ranges from 2 to 24 hours, making it suitable for production workflows where speed and quality are balanced.

Does Nitro API preserve formatting in complex documents?

Yes, Nitro API preserves markup and structure for complex formats such as HTML, JSON, XML, and iOS strings, ensuring that only the content is translated while maintaining the original formatting.

Can Nitro API be used without an API key?

Yes, Nitro API can be used autonomously without an API key or account setup, though it also supports optional API key authentication for additional control.