Changelog

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All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning. Beamlet is beta until 1.0: a minor release may break things, and its entry says so.

Unreleased

0.1.0 - 2026-10-07

First public release of Beamlet, an Elixir server that AI agents build from the inside, over MCP.

Added

  • Run it as a server or inside your own app
    • A standalone server, published as a Docker image, with guides for Docker and Fly.io.
    • An Elixir package you start in your own application's supervision tree.
    • The beamlet command line, to set up the owner, manage tokens, view policies and reset the beamlet.
  • Connect any MCP client
    • An MCP server that clients connect to through OAuth, or with a token made on the command line.
    • A sign-in page, a home page with setup steps for each client, and a consent page.
  • Agents build in Elixir, on a running server
    • Tools to run Elixir (eval), define modules (define) and edit them in place (patch), with docs agents discover as they go.
    • A database with migrations, a key/value store, PubSub, a files directory and outbound HTTP for agent code.
    • Phoenix controllers and LiveViews written by agents, mounted as routes and served live.
    • A git history of every change, recording which token made it.
  • Guardrails on every token
    • A policy on each token setting what agent code may call: a default policy, and your own declared in a config file.
    • Limits on run time, memory and output, and outbound requests to private addresses refused.