AN UNOFFICIAL MOCK · STILL ON THE WAITLIST

You’re not called Ben?
Still on the waitlist?

Try a TypeSafe-like API for people who can’t get past their waiting list.

This is an unofficial mock for those of us not lucky enough to be in the typesafe.ai beta yet. It imitates the API with general-purpose models. Expect much poorer results than TypeSafe—not a preview of their actual model or quality.

Try it with a Cerebras key. Its gpt-oss-120b model is the recommended way to get a feel for this mock’s performance. These timings are not a benchmark of TypeSafe.

Try the playground ↗Explore the smart home →

UNOFFICIAL MOCKOFFICIAL SDKSBRING YOUR OWN KEY

INPUT / 001

“

CUSTOMER MESSAGE

I was charged twice.
Can you help?

{ }

MOCK RESPONSE ✓

{
  "department": "billing",
  "confidence": 0.97
}

ILLUSTRATIVE OUTPUT · NOT TYPESAFE INFERENCE++

01 / THE PLAYGROUND

A little language.
A useful decision.

Pick an example. See what comes back.
Connect a key to make it your own.

YOUR INPUT

STATE The context your questions are about

QUESTIONS Three questions. One request.

↗

department

Which team should handle this request?

choice

◐

urgent

Does the customer need action today?

noul

≋

frustration

How frustrated is the customer?

score

Your provider key. Your live result.

03 / PUT IT IN YOUR CODE

Their SDKs.
This mock’s URL.

Use the current official TypeSafe JavaScript or Python SDK unchanged. Set baseURL (JavaScript) or base_url (Python) to https://typesafe.severin-marcombes.com and pass your provider key as apiKey or api_key. Your systemOne / system_one calls stay the same.

npm install @typesafe-ai/sdk

Explore the original API reference ↗

Code follows your selected playground example.
Cerebras is recommended. The examples use CEREBRAS_API_KEY; you can also supply an OpenAI or Anthropic key.

curl "https://typesafe.severin-marcombes.com/v1/systemone" \
  -H "Authorization: Bearer $CEREBRAS_API_KEY" \
  -H 'Content-Type: application/json' \
  --data '{
  "model": "jev-latest",
  "state": "I was charged twice for my subscription. Please refund the extra payment — I need this sorted out today.",
  "questions": {
    "department": {
      "type": "choice",
      "instructions": "Which team should handle this request?",
      "criteria": {
        "billing": "Payments, invoices and refunds",
        "technical": "Bugs, outages and integrations",
        "sales": "Pricing and new purchases"
      }
    },
    "urgent": {
      "type": "noul",
      "instructions": "Does the customer need action today?"
    },
    "frustration": {
      "type": "score",
      "instructions": "How frustrated is the customer?",
      "criteria": [
        "Calm",
        "Frustrated",
        "Very angry"
      ]
    }
  }
}'

02 / SEE IT DO SOMETHINGINTERACTIVE DEMO