Kasyana API

Base URL

https://api.kasyana.com/v1

Everything below follows the OpenAI API shape. Authentication is by bearer API key, issued in the platform panel.

Authentication

Authorization: Bearer sk-<your-api-key>

Keys are created in the panel and shown once at creation. Revoking a key stops it immediately.

List models

GET /v1/models

curl https://api.kasyana.com/v1/models \
  -H "Authorization: Bearer sk-<your-api-key>"

Chat completions

POST /v1/chat/completions

curl https://api.kasyana.com/v1/chat/completions \
  -H "Authorization: Bearer sk-<your-api-key>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-v4-flash",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Set "stream": true in the body to receive a Server-Sent-Events stream ending with data: [DONE]. Supported body fields: model, messages, stream, temperature, top_p, max_tokens, stop, presence_penalty, frequency_penalty, response_format, stream_options.

Upstreams & model routing

The API is a general router: attach your provider subscriptions in the panel (LLM → Upstreams) and one unified endpoint serves them all. Model names select the upstream by namespace:

openai/gpt-5.6-sol          # upstream "openai"
deepseek/deepseek-v4-flash   # upstream "deepseek"
deepseek-v4-flash            # no namespace = the default upstream

Webhook-safe rules: namespaces are the first path segment; a model without a namespace goes to the default upstream; unknown namespaces return 400. Credentials are encrypted at rest and never echoed back (GET /panel-api/upstreams omits them).

Anthropic Messages API

For clients that speak the Anthropic protocol (notably Claude Code), an Anthropic-compatible endpoint is served at the same base URL:

POST https://api.kasyana.com/v1/messages
Header: anthropic-version: 2023-06-01

curl https://api.kasyana.com/v1/messages \
  -H "Authorization: Bearer sk-<your-api-key>" \
  -H "anthropic-version: 2023-06-01" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-v4-flash",
    "max_tokens": 1024,
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Claude Code: set ANTHROPIC_BASE_URL=https://api.kasyana.com, ANTHROPIC_AUTH_TOKEN=sk-<your-api-key> and ANTHROPIC_MODEL=deepseek-v4-flash[1m] in ~/.claude/settings.json. Tool calling and image inputs are supported; thinking is forced off at the upstream (stable agent loops); errors are returned in the Anthropic error envelope.

Limits

Requests are rate-limited per key (120 burst, 2/second sustained).

Usage tracking

The panel shows token usage per key and per day.