API Reference

Overview

Authentication

All requests must include your API key as a Bearer token in the Authorization header. Generate your key from the Developer settings page.

Authorization: Bearer zlai_xxxxxxxxxxxxxxxxxxxxxxxx

Endpoints

POST /api/v1/chat

Send a conversation and receive a completion. Supports streaming via Server-Sent Events and optional agent context.

Request body

Example request

curl https://zerolimitai.com/api/v1/chat \
  -H "Authorization: Bearer zlai_xxxxxxxxxxxxxxxxxxxxxxxx" \
  -H "Content-Type: application/json" \
  -d '{
    "messages": [
      { "role": "user", "content": "What is the capital of France?" }
    ]
  }'

Example response

{
  "id": "chatcmpl-abc123",
  "object": "chat.completion",
  "model": "mistralai/Mistral-7B-Instruct-v0.3",
  "choices": [
    {
      "index": 0,
      "message": { "role": "assistant", "content": "The capital of France is Paris." },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 14,
    "completion_tokens": 9,
    "total_tokens": 23
  }
}

Streaming example (Python)

import openai

client = openai.OpenAI(
    base_url="https://zerolimitai.com/api/v1",
    api_key="zlai_xxxxxxxxxxxxxxxxxxxxxxxx",
)

stream = client.chat.completions.create(
    model="mistralai/Mistral-7B-Instruct-v0.3",
    messages=[{"role": "user", "content": "Tell me a joke."}],
    stream=True,
)

for chunk in stream:
    print(chunk.choices[0].delta.content or "", end="", flush=True)

GET /api/v1/models

Returns the list of models available to your account based on your plan tier. Response format is compatible with the OpenAI /v1/models endpoint.

Example request

curl https://zerolimitai.com/api/v1/models \
  -H "Authorization: Bearer zlai_xxxxxxxxxxxxxxxxxxxxxxxx"

Example response

{
  "object": "list",
  "data": [
    {
      "id": "anthropic/claude-3.5-sonnet",
      "object": "model",
      "created": 1711929600,
      "owned_by": "anthropic"
    },
    {
      "id": "openai/gpt-4o",
      "object": "model",
      "created": 1711929600,
      "owned_by": "openai"
    }
  ]
}

GET /api/v1/usage

Returns usage statistics for your account: daily message count and monthly token/cost aggregates.

Example request

curl https://zerolimitai.com/api/v1/usage \
  -H "Authorization: Bearer zlai_xxxxxxxxxxxxxxxxxxxxxxxx"

Example response

{
  "today": {
    "used": 42,
    "limit": 500
  },
  "month": {
    "requests": 1204,
    "tokensIn": 892400,
    "tokensOut": 412100,
    "cost": 0.0187
  },
  "plan": "LIFETIMEPRO"
}

Error codes

Rate limits

Rate limits apply per API key. When a limit is exceeded you receive a 429 response with a Retry-After header indicating seconds until the limit resets.

Using with OpenAI SDKs

The API is compatible with the OpenAI client libraries. Just change the base_url to https://zerolimitai.com/api/v1 and use your ZeroLimitAI API key.

# Python
pip install openai

# Node.js
npm install openai

// Node.js
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://zerolimitai.com/api/v1",
  apiKey: "zlai_xxxxxxxxxxxxxxxxxxxxxxxx",
});

const response = await client.chat.completions.create({
  model: "mistralai/Mistral-7B-Instruct-v0.3",
  messages: [{ role: "user", content: "Hello!" }],
});

console.log(response.choices[0].message.content);