# llm-typesafe 0.1a0

> Source: <https://simonwillison.net/2026/Sep/22/llm-typesafe/>
> Published: 2026-09-22 15:54:16+00:00

**Release:** [llm-typesafe 0.1a0](https://github.com/simonw/llm-typesafe/releases/tag/0.1a0)

I built this new plugin for [LLM](https://llm.datasette.io/) to add support for [TypeSafe AI's new Jev model](https://simonwillison.net/2026/Sep/21/jev/). Install it like this:

```
llm install llm-typesafe
```

Then set an API key ([get one here](https://console.typesafe.ai/), the waitlist seems to move pretty fast):

```
llm keys set typesafe
# Paste key
```

And now you can ask yes/no "noul" questions like this:

```
llm -m jev 'Please refund my last payment.' \
  -s 'Does this message explicitly request a refund?'
```

Output:

```
{"type": "noul", "noul": 0.99}
```

Or choice questions like this:

```
cat message.txt | llm -m jev \
  -s 'Which team should handle this message? If billing and technical issues both occur, choose billing.' \
  -o answer_type choice \
  -o criteria '{
    "billing":"Charges, invoices, payments, or refunds",
    "technical":"Problems installing or using the product",
    "other":"Neither category fits"
  }'
```

Or scoring questions like this:

```
cat report.txt | llm -m jev \
  -s 'How reproducible is the problem described in this report?' \
  -o answer_type score \
  -o criteria '[
    "No reproduction instructions",
    "Some instructions, but important steps are missing",
    "Complete steps with expected and actual results"
  ]'
```

See [the README](https://github.com/simonw/llm-typesafe/blob/main/README.md) for more details.