leitum 0.1.1

Launch Claude Code against alternative LLM routers

leitum

What is leitum?

leitum is a small CLI tool that launches Claude Code against alternative LLM routers and providers (Requesty, OpenRouter, LiteLLM, local Ollama, etc.) instead of the Anthropic API directly. It mirrors the ergonomics of ollama launch and omlx launch: prepend leitum to your claude invocation and get your chosen provider and models configured automatically.

Install

# via uvx (no install needed)
uvx leitum --version

# via pip
pip install leitum

# via Homebrew (own tap)
brew tap <owner>/leitum
brew install leitum

Quickstart

# Initialize config directory and example providers file
leitum init

# Set your API key
export REQUESTY_API_KEY=your-key-here

# Launch Claude Code via Requesty
leitum claude

# Dry-run: see what would happen without launching
leitum --dry-run claude

Configuration

Config lives at ~/.config/leitum/api-providers.yaml (XDG). Example:

schema_version: 1
providers:
  - name: requesty
    base_url: https://router.requesty.ai
    auth:
      token: ${REQUESTY_API_KEY}
    defaults:
      start: anthropic/claude-sonnet-4-5
    models:
      - id: anthropic/claude-sonnet-4-5
        roles: [sonnet, start]
      - id: anthropic/claude-opus-4-5
        roles: [opus]
      - id: anthropic/claude-haiku-4-5
        roles: [haiku]

See docs/configuration.md for the full schema reference.

Pin provider and models per repository with leitum.yaml (checked into version control):

schema_version: 1
provider: requesty
models:
  start: anthropic/claude-sonnet-4-5

CLI Reference

leitum [OPTIONS] <subcommand> [ARGS...]

Global options (before the subcommand):

Flag	Short	Effect
--provider <name>	-p	Set provider
--use-last-provider	-P	Reuse last provider
--model <id>	-m	Set START model
--use-last-model	-M	Reuse last START model
--opus <id>	-o	Set OPUS model
--sonnet <id>	-s	Set SONNET model
--haiku <id>	-k	Set HAIKU model
--refresh	-r	Refresh model cache
--no-project-config		Ignore leitum.yaml
--dry-run		Print env + exec line, do not launch
--verbose	-v	Verbose logging on stderr

Subcommands: claude, provider list/show/add/remove, refresh, doctor, init, completions.

See docs/commands.md for details.

Providers

• Requesty

Troubleshooting

Run leitum doctor for a full sanity check. See docs/troubleshooting.md.

Contributing

See CLAUDE.md and the PRDs in prd/ for the authoritative specification.

License

Apache 2.0 — see LICENSE.