Chatfile

Chatfile is a simple tool for interacting with language models using plaintext.

Example

FROM chatgpt
SYSTEM You are a technical writer.

ASK Write a readme file for the chatfile project
ANSWER |
    **Chatfile** is a prompt-driven tool for interacting with LLMs using plaintext. 

Usage

Set your API key and optionally the base url of an openai-compatible api:

export OPENAI_API_KEY="sk-chatfile-key"
export OPENAI_BASE_URL="http://api.example.com/" # Optional

Create a chatfile:

cat > ./chatfile << ---
FROM gpt-4.1-nano
SYSTEM |
    You are an expert in explaining mathematical concepts clearly and concisely. 
    Provide a straightforward and accurate explanation for students.

ASK What is Cauchy's functional equation?
---

Call the tool to execute your chatfile and get a response with this command:

chatfile run ./chatfile

---

Chatfile — prompt and get responses all in one file!