Install archgw with Homebrew

Project links

• Homepage
• Repository
• Upstream docs
• Package manager page

Commands and aliases

• archgw

Project history

The official GitHub API redirects `katanemo/archgw` to `katanemo/plano`, and the repository describes Plano as an AI-native proxy server and data plane for agentic apps. The public repository was created on 2024-07-09, with the first release in the GitHub releases API, 0.1.0, published on 2024-10-31.

Plano's README frames the project as a response to production agent plumbing: routing between agents, model-provider abstraction, guardrail filters, and OpenTelemetry-style signals that otherwise get copied into every application.

Adoption history

The docs package the CLI as `planoai`, with installation through uv or pip, while Homebrew exposes the older `archgw` formula name. That naming history is useful for package nerds because it captures an active rename/repositioning rather than a simple one-name project.

GitHub metadata showed thousands of stars by the 2026 batch run, and the docs emphasize precompiled native downloads, Docker mode, and a quickstart repository, indicating adoption aimed at app developers who want a local gateway without manually building Envoy/WASM components.

How it is used

A typical setup creates `plano_config.yaml`, declares model providers with `access_key` values such as `$OPENAI_API_KEY` and `$ANTHROPIC_API_KEY`, then runs `planoai up plano_config.yaml`. The quickstart says those keys may also be defined in a `.env` file.

Once running, Plano exposes OpenAI-compatible endpoints for model proxying and can orchestrate HTTP agents by intent, letting applications keep their own business logic while the gateway handles routing, provider choice, tracing, and guardrail hooks.

Why package nerds care

This row is notable because the package name, executable identity, and project name are in motion: `archgw` survives as a package entry while official project surfaces now say Plano.

It is also a modern example of packaging an AI infrastructure tool whose useful local install includes not only a CLI, but downloaded proxy/runtime components cached under the user's home directory.

Timeline

• 2024-07-09: GitHub repository created.
• 2024-10-31: First GitHub release, 0.1.0.
• 2026-06-25: Latest GitHub release observed for this batch, 0.4.26.
• 2026: Official GitHub API redirects `katanemo/archgw` to `katanemo/plano`.

Related projects

• The README says Plano is built on Envoy and names OpenAI-compatible APIs, OpenTelemetry traces, and provider models such as OpenAI and Anthropic in its examples.
• The docs point to a separate official `plano-quickstart` repository for runnable application examples.

Sources

• https://api.github.com/repos/katanemo/plano
• https://api.github.com/repos/katanemo/plano/releases
• https://docs.planoai.dev/get_started/quickstart.html
• https://github.com/katanemo/plano