Exposes Ask::Agent::Session behind the standard app-server JSON-RPC/stdio protocol. Drop-in compatible with clients that speak the ZCode/Codex app-server protocol — Telegram bots, AI SDK providers, IDE extensions, and headless automation.

DEPRECATED — maintenance mode only, superseded by the canonical ask-app-server + ask-session-protocol architecture and an internal successor. A self-hosted web coding agent for the ask-rb ecosystem. Runs Ask::Agent::Session against any workspace with a mobile-first PWA, streaming events over SSE, with approvals, plan mode, todos, and diffs. Comes with the `ach` utility CLI for headless runs and server management. Extensible to other coding agents (ACP, Codex, Claude Code) via ask-coding-providers.

Harness for AI coding agents working in any Ruby project. Ships a language-agnostic tool contract (RunCommand, ReadLog, QueryDatabase, ReadModel, SchemaGraph, RunTests) with structured returns, read-only DB enforcement, environment permissions, and audit logging. The Rails edition (ask-rails-harness) adds framework-native tools on top.