Shogo API

Shogo exposes an OpenAI-compatible REST API so you can call Shogo models from any OpenAI client library, your backend, or curl. You authenticate with a Shogo API key (shogo_sk_…), and usage is billed to your workspace just like usage inside the app.

The current model available on the public API is Hoshi 2.0 (hoshi-2-0), backed by DeepSeek-V4.1-Flash with thinking enabled. Hoshi 1.0 (hoshi-1-0) remains available as a legacy model during the migration window.

Base URL

https://studio.shogo.ai/api/v1

Because the API follows the OpenAI wire format, you only need to change the base URL and API key in any existing OpenAI integration.

note

A shorter https://api.shogo.ai/v1 alias is planned. Until it ships, use the https://studio.shogo.ai/api/v1 base URL above — the endpoints, request, and response shapes are identical.

Authentication

Send your Shogo API key as a bearer token:

Authorization: Bearer shogo_sk_your_key_here

Create and manage keys from Settings → API Keys in the Shogo app. Treat a key like a password — it grants access to your workspace's usage and billing. Revoke a key from the same screen if it leaks.

note

The public API accepts only Shogo API keys (shogo_sk_…). Internal credentials such as runtime tokens are not valid here.

Models

Hoshi 2.0 is served under the stable id hoshi-2-0. The dotted spelling hoshi-2.0 is accepted as an alias. List the models available to your key:

curl https://studio.shogo.ai/api/v1/models \
  -H "Authorization: Bearer $SHOGO_API_KEY"

{
  "object": "list",
  "data": [
    {
      "id": "hoshi-2-0",
      "object": "model",
      "owned_by": "shogo",
      "display_name": "Hoshi 2.0"
    }
  ]
}

Chat completions

curl

curl https://studio.shogo.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $SHOGO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "hoshi-2-0",
    "messages": [
      { "role": "user", "content": "Write a haiku about debugging." }
    ]
  }'

OpenAI SDK (Python)

from openai import OpenAI

client = OpenAI(
    base_url="https://studio.shogo.ai/api/v1",
    api_key="shogo_sk_your_key_here",
)

resp = client.chat.completions.create(
    model="hoshi-2-0",
    messages=[{"role": "user", "content": "Write a haiku about debugging."}],
)
print(resp.choices[0].message.content)

OpenAI SDK (JavaScript / TypeScript)

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://studio.shogo.ai/api/v1",
  apiKey: process.env.SHOGO_API_KEY,
});

const resp = await client.chat.completions.create({
  model: "hoshi-2-0",
  messages: [{ role: "user", content: "Write a haiku about debugging." }],
});
console.log(resp.choices[0].message.content);

Streaming

Set "stream": true to receive server-sent events in the standard OpenAI chunk format:

curl https://studio.shogo.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $SHOGO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "hoshi-2-0",
    "stream": true,
    "messages": [{ "role": "user", "content": "Count to five." }]
  }'

Errors

Errors use the OpenAI error envelope:

{
  "error": {
    "message": "The model 'foo' does not exist or you do not have access to it.",
    "type": "invalid_request_error",
    "code": "model_not_found"
  }
}

Status	code	Meaning
401	invalid_api_key	Missing or invalid shogo_sk_ key.
404	model_not_found	The requested model is not available on the public API.
402	usage_limit_reached	Your workspace is out of included usage; enable usage-based pricing or upgrade.
403	model_tier_restricted	Your plan does not include access to this model tier.
429	rate_limited	Too many requests; retry after the Retry-After header.

Billing

Calls are metered to the workspace that owns the API key, using the same usage windows and limits as the Shogo app. See Billing for how included usage and usage-based pricing work.