Cipher API: OpenAI-Compatible Private LLM Endpoint
Cipher exposes the same private model behind Secrypt chat as POST /v1/chat/completions — so SDKs, Cursor, and agents can talk to Secrypt with a familiar OpenAI client shape.
Key takeaway: Cipher exposes the same private model behind Secrypt chat as POST /v1/chat/completions — so SDKs, Cursor, and agents can talk to Secrypt with a familiar OpenAI client shape.
What Cipher API is
Cipher is Secrypt’s assistant name. The Cipher API is the developer surface: an OpenAI-compatible chat completions endpoint on secrypt.space, authenticated with sk_sec_ keys.
You keep the privacy contract of Secrypt chat while wiring Cipher into scripts, backends, IDE agents, and automation.
Base URL and model id
Base URL: https://secrypt.space/v1
Preferred model id: cipher (alias: secrypt-cloud).
Create a key in Account → API keys, then call /v1/chat/completions with Authorization: Bearer sk_sec_…
Pay-as-you-go pricing
Chat subscriptions and API usage are billed separately. Free and paid chat plans include a daily API allowance. After that, each API request spends prepaid credits at $0.01 per request.
Buy credits from Account or Invite & Earn. This is request-based metering — simple to predict while you prototype.
When to use Cipher API vs chat
Use the chat UI for interactive private conversations. Use the API when you need Cursor, Continue, cron jobs, or your own product backend talking to Cipher programmatically.
Frequently asked questions
Is Cipher API OpenAI-compatible?
Yes for chat completions and models listing. Point an OpenAI SDK base_url at https://secrypt.space/v1 and use model cipher.
How much does API usage cost?
Plans include a daily free API allowance. After that, Secrypt charges $0.01 per API request from prepaid credits.
Related guides
Try Secrypt
Secrypt is private, uncensored AI chat. No training on your messages. Open a thread when you need discretion more than theater.