Build on HLD
Everything you need to integrate HLD into your stack — APIs, SDKs, documentation, and tools. Go from zero to production in minutes.
50+
API Endpoints
6
SDK Languages
99.99%
Uptime SLA
<100ms
Avg Response
Explore Resources
Documentation
Comprehensive guides, tutorials, and references for every HLD product and API.
Learn moreAPI Reference
Complete REST API documentation with request/response examples for all endpoints.
Learn moreOpenAI-Compatible API
Drop-in replacement for OpenAI. Change the base URL, keep your existing code.
Learn moreSDKs & Libraries
Official SDKs for Python, JavaScript, Go, and more. Install and start building in seconds.
Learn moreStatus Page
Real-time service availability, uptime metrics, and incident history for all systems.
Learn moreChangelog
Product updates, new features, breaking changes, and deprecation notices.
Learn moreQuick Start
Make your first API call in under 60 seconds. HLD is OpenAI-compatible — swap the base URL and you're live.
curl
curl https://api.highlimitdesigns.com/v1/chat/completions \
-H "Authorization: Bearer $HLD_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "glm-5.1",
"messages": [{"role": "user", "content": "Hello!"}]
}'Python
from openai import OpenAI
client = OpenAI(
api_key=os.environ["HLD_API_KEY"],
base_url="https://api.highlimitdesigns.com/v1"
)
response = client.chat.completions.create(
model="glm-5.1",
messages=[{"role": "user", "content": "Hello!"}]
)JavaScript
import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.HLD_API_KEY,
baseURL: "https://api.highlimitdesigns.com/v1",
});
const response = await client.chat.completions.create({
model: "glm-5.1",
messages: [{ role: "user", content: "Hello!" }],
});Ready to start building?
Get started for free