LlamaBarn

Install

brew install --cask llama-app

Or download from Releases.

Example requests

List installed models:

curl http://localhost:9931/v1/models

Send a message to a model:

curl http://localhost:9931/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d '{
    "model": "ggml-org/gpt-oss-20b-GGUF:MXFP4",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

See complete API reference in the llama.cpp server docs.

Custom model settings

The app configures each model for your Mac and writes that config to models.ini, which it regenerates on every launch. To change a setting, or add one the app doesn't set, edit ~/.config/llama/models.user.ini instead -- the app only reads that file, and merges it into the config it generates.

Use the same section header the app uses (org/repo:QUANT), and list only the keys you want to change. Keys are llama serve options without the leading dashes.

[ggml-org/gemma-4-E4B-it-GGUF:Q8_0]
temp = 0.7
ctx-size = 32768
cache-type-k = q4_1

A section for a model the app didn't find is passed through as-is, which is how you point at weights or a draft model from another repo.

[unsloth/DeepSeek-V4-Flash-0731-GGUF:UD-Q2_K_XL]
model = /path/to/DeepSeek-V4-Flash-UD-Q2_K_XL.gguf
spec-type = draft-dspark
spec-draft-model = /path/to/draft.gguf

Anything you set here wins over the app's own value, including settings derived from how much memory your Mac has. If a key can't be applied, the app ignores the file and the menu says which option was at fault.

A commented template is written to this path on first launch.

Experimental settings

Bind to a specific address — to pin the server to one address the app doesn't offer, set it by hand. The app leaves it alone, and falls back to localhost whenever the address isn't on any interface.

defaults write app.llama.Llama exposeToNetwork -string "192.168.1.50"

Custom server arguments — Extra CLI arguments appended to the llama serve command, for server flags the app doesn't expose (e.g. --api-key). They come after the app's own flags, so where the server honors the later occurrence they can override the app's settings. Takes effect on the next server start.

```sh