Stable Developer API v1.10.0

From first request to production, without guesswork.

Build with the stable Developer API v1, official TypeScript and Python SDKs, a safe sandbox, and signed webhooks.

Start in five minutes Open stable reference Try the sandbox

Current stable contract

Developer API: v1.10.0
Operations: 265
Released: 2026-08-09
Runtime paths: /api/...
TypeScript SDK: v1.1.0
Python SDK: v1.1.0

OpenAPI SHA-256: 54e6c9c3390b1137a1a15a8197fee0862b48513e703ee13525aed4aaa055add7

No action is required. API 1.10.0 adds seven OAuth protocol operations while preserving all existing requests, responses, operation IDs, and runtime URLs.

Install an official SDK

TypeScriptnpm install @arcenciel/sdk@1.1.0

Pythonpython3.11 -m pip install arcenciel==1.1.0

npm package homepage · PyPI package homepage

SDK compatibility guide · Source and signed tags

Minimal read workflow

TypeScript

import { ArcEnCielClient } from '@arcenciel/sdk'

const client = new ArcEnCielClient()
const page = await client.call(() =>
  client.models.searchModels({ search: 'landscape', limit: 5 })
)
console.log(page.data)

Python

from arcenciel import ArcEnCielClient

client = ArcEnCielClient()
page = client.call_sync(
    lambda: client.models.search_models_sync(search="landscape", limit=5)
)
print(page.data)

cURL

curl --fail-with-body --get 'https://arcenciel.io/api/models/search' \
  --data-urlencode 'search=landscape' \
  --data-urlencode 'limit=5'

Safe integration testing

The deterministic sandbox mirrors all 265 stable methods and paths without production persistence.

Read the crawlable Sandbox guide · Machine-readable manifest