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Getting started

Pattern-lang ships as release binaries. No build step on your machine.

1. Install

Once a release is published, the shortest path is:

curl -fsSL https://github.com/openIE-dev/pattern-lang/releases/latest/download/install.sh | sh
pattern-lang --version

For air-gapped installs, grab the tarball for your platform from the Releases page and place the binary on $PATH.

2. First query

pattern-lang engage
> compose: greatest common divisor
> target: rust

You get a typed DAG, an emitted Rust function, and a receipt that names the cascade tier and the joules spent.

3. Run as a server

joule-edge-server --bind 127.0.0.1:7777

The server exposes an Anthropic-compatible POST /v1/messages endpoint. Every response includes usage.joules_spent and usage.tier_used.

curl http://127.0.0.1:7777/v1/messages \
  -H "Content-Type: application/json" \
  -d '{
    "model": "pattern-lang",
    "messages": [{"role": "user", "content": "factorial of 7"}]
  }'

4. Where the cascade went

pattern-lang bench cascade

Prints the in-tree cost wedge: verify_first vs always-frontier on a 60-query workload, with per-tier joule breakdown.

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