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Running Claude Code Locally with Ollama and Open-Source Models as a Free Alternative to the Anthropic API

Claude Code's API costs add up fast for heavy users, often $50 to $200+/month on Opus 4.5/4.6. Ollama (v0.14.0+) now supports the Anthropic Messages API natively, which means Claude Code can run against local open-source models at zero cost, with no data leaving the machine.

This guide covers the full setup: installing Ollama and Claude Code, choosing a model that fits 16 GB of RAM, connecting the pieces, and understanding the real tradeoffs.

The Cost Problem

Hurdles of macOS distribution

Code signing
Notarization
Quarantine
Distribution vehicles
Notes

Code signing

macOS Internals

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Starting Points

How to use this gist

You've got two main options:

create docker container and not check autostart.
Control Panel > Task Scheduler and create job with command

docker container start task-notify-github

after container finish synology alert notification Docker container ... stopped unexpectedly. access terminal and update update config with command

	#!/usr/bin/env bash
	#
	# Bootstrap script for setting up a macOS machine
	#
	#

	echo "Remember to install Xcode from the Store first"

	echo "Starting bootstrapping"

	#!/bin/sh

	### BEGIN INIT INFO
	# Provides: pocketmine
	# Required-Start:
	# Required-Stop:
	# Should-Start:
	# Should-Stop:
	# Default-Start: 2 3 4 5
	# Default-Stop: 0 1 6

	"""
	Minimal character-level Vanilla RNN model. Written by Andrej Karpathy (@karpathy)
	BSD License
	"""
	import numpy as np

	# data I/O
	data = open('input.txt', 'r').read() # should be simple plain text file
	chars = list(set(data))
	data_size, vocab_size = len(data), len(chars)

	#!/bin/zsh

	typeset -A closings
	closings=( '{' '}' '[' ']' )

	# usage: find-matching strvar pos
	# heart of the parser. matches one "element." matching depends on first
	# character (at pos), can be " for string matching or any in closings
	# associative parameter.