Use Simple8 in the way that fits your team.

Create ready-to-publish Plain Language and Easy Language in the Editor, through the API, with a website widget, or as automated jobs and batches.

Make your first request View the API reference

Editor · API · Website widget · Jobs · Batches · Webhooks

{
  "text": "Complex source content in the selected language.",
  "locale": "en",
  "mode": "simple-language"
}

SDK and cURL examples available

Start cards

Make the first request

Create a free account, generate an API key, and send one synchronous request.

Open the quickstart

Choose a locale

Copy one of the 24 supported locale codes.

View supported locales

Choose how you want to work

Compare the Editor, synchronous and streaming API calls, background jobs, batches, and webhooks.

Compare delivery patterns

Core contract callout

Every API request starts with the same three content fields.

{
  "text": "Complex source content in the selected language.",
  "locale": "en",
  "mode": "simple-language"
}

locale selects the output language. The source language is detected automatically. mode is either simple-language for Plain Language or easy-language for Easy Language.

API limits

Simple8 uses rolling windows. API limits at the application and network edge apply together. When more than one rule matches a request, the first exhausted limit determines the waiting time. Rate-limited responses use HTTP 429 and provide the waiting time in the Retry-After header.

Per-plan application limits

Plan	Requests per minute per API key	Concurrent processing	Async submissions per minute
Sandbox	5	1	Unavailable
Launch	60	5	Unavailable
Team	300	20	30
Scale	1,000	50	100

Additional API protection limits

Surface	Applied to	Limit
Invalid API credentials	IP address	30 per minute and 100 per hour
Synchronous translation at the network edge	IP address	2,000 per minute and 20,000 per hour
Jobs and batches at the network edge	IP address	200 per minute and 2,000 per hour
Jobs and batches	Organization	Team: 30 per minute; Scale: 100 per minute
Widget visitor	Widget and IP address	30 per minute
Widget site on Launch	Widget	600 per minute
Widget site on Team	Widget	3,000 per minute
Widget site on Scale	Widget	10,000 per minute
Widget requests at the network edge	IP address	120 per minute and 1,000 per hour
API health endpoint	IP address	120 per minute

Monthly character allowances

Plan	Included characters per billing period
Sandbox	15,000
Launch	100,000
Team	1,000,000
Scale	5,000,000

Allowance behavior

If additional usage is unavailable, reaching the monthly character allowance returns HTTP 429. The Retry-After header points to the end of the current billing period.

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