brew install anthropics/tap/ant

go install 'github.com/anthropics/anthropic-cli/cmd/ant@latest'

# Add to your shell profile (.zshrc, .bashrc, etc.)
export PATH="$PATH:$(go env GOPATH)/bin"

ant auth login

ant messages create \
  --model claude-opus-4-8 \
  --max-tokens 1024 \
  --message '{role: user, content: "Hello, Claude"}'

ant <resource>[:<subresource>] <command> [flags...]

# List available models
ant models list

# Browse a response in the interactive explorer (the default in a terminal)
ant models retrieve --model-id claude-opus-4-8

# Extract a single field from a response, jq-style
ant messages create \
  --model claude-opus-4-8 \
  --max-tokens 1024 \
  --message '{role: user, content: "Hello, Claude"}' \
  --transform content.0.text --raw-output

# Send a file using the @path syntax
ant messages create \
  --model claude-opus-4-8 \
  --max-tokens 1024 \
  --message '{role: user, content: [
    {type: image, source: {type: base64, media_type: image/jpeg, data: "@photo.jpg"}},
    {type: text, text: "What is in this image?"}
  ]}'

# Manage beta resources such as agents, sessions, and files
ant beta:agents list