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Use when the user runs /autumn:dev, asks to start the Autumn development server, enable hot reload, or check what's running locally.
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Use when writing, reviewing, or debugging Rust code in an autumn-web project; covers idiomatic patterns for testing, repositories, service layers, job design, security, error handling, and Maud templates that are not covered in the framework API reference.
Use when building, debugging, documenting, or upgrading Rust web applications with autumn-web, autumn-cli, or first-party Autumn crates; also use for Autumn route/model/repository/job/webhook/admin macros, AppBuilder setup, Maud + htmx server-rendered UI, Diesel async Postgres, and Autumn 0.5.x migration or release work.
Use when the user runs /autumn:doctor, asks to audit their Autumn app's configuration, check for deployment readiness, or diagnose config problems, missing secrets, or stale migrations.
Use when the user runs /autumn:generate, asks to scaffold a resource, generate a model, migration, controller, mailer, or task using the autumn CLI.
Use when the user runs /autumn:new, asks to create a new Autumn web application, or wants to scaffold a fresh project with the autumn CLI.
Use when the user runs /autumn:routes, asks to list registered routes, inspect route handlers, check what endpoints exist, or audit an Autumn app's routing table.
Baseado na classificação ocupacional SOC
| name | dev |
| description | Use when the user runs /autumn:dev, asks to start the Autumn development server, enable hot reload, or check what's running locally. |
| argument-hint | [--package <name>] [--show-config] |
| allowed-tools | ["Bash","Read"] |
Start the Autumn development server with hot reload.
Before running autumn dev, verify:
Database URL is configured — check autumn.toml or the env var
AUTUMN_DATABASE__PRIMARY_URL is set. autumn dev will fail at startup
if no database URL is present. Note: autumn migrate check analyzes
migration SQL files only and does NOT test connectivity — to verify the
database is reachable, attempt autumn migrate status or start the server
and watch the startup logs. autumn dev now auto-loads a project-root
.env file (dev/test profiles) into the AUTUMN_* env layer before boot,
so you can set AUTUMN_DATABASE__URL there (copy .env.example to .env);
real shell env vars still win, and a malformed .env fails loudly.
Tailwind binary is present — if autumn setup has not been run:
autumn setup
autumn dev
For workspace projects, specify the package:
autumn dev --package my-app
To log all registered routes, tasks, middleware, and config at startup:
autumn dev --show-config
autumn dev uses the dev profile automatically in debug builds
(AUTUMN_ENV=dev is the default).
On trunk-dev (unreleased — not in the published 0.5.0 CLI) there is also
autumn serve for a non-watch local daemon: autumn serve --daemon /
stop / status / restart, --release, and --bundled-pg for a managed
local Postgres. See docs/guide/daemon.md. Do not suggest it to users on the
published 0.5.0 CLI.
Once running, tell the user what's available:
| Endpoint | Purpose |
|---|---|
http://localhost:3000 | Application root |
http://localhost:3000/health | Simple health check |
http://localhost:3000/actuator/health | Detailed health (JSON) |
http://localhost:3000/actuator/tasks | Scheduled task status |
http://localhost:3000/actuator/jobs | Background job status |
http://localhost:3000/static/js/htmx.min.js | Bundled htmx |
If autumn-admin-plugin is installed:
| http://localhost:3000/admin | Admin dashboard |
If the mail feature is enabled:
| http://localhost:3000/_autumn/mail | Mailer preview (dev profile only) |
autumn dev watches src/, templates/, and static/ for changes and
recompiles + restarts automatically. Tailwind CSS is rebuilt on template
changes.
On trunk-dev (unreleased — not in the published 0.5.0 CLI), when a rebuild
fails the browser renders the compiler diagnostics as a full-screen overlay
(under a strict nonce-based CSP) instead of leaving a blank or stale page; it
clears on the next successful rebuild (issue #1115). See
docs/guide/dev-error-overlay.md.
| Symptom | Fix |
|---|---|
Error: Address already in use | Port 3000 is taken. Set AUTUMN_SERVER__PORT=3001 autumn dev or kill the existing process. |
Error: connection refused | Database is not running. Start Postgres first. |
| Compile error shown in terminal | Fix the Rust error; autumn dev will retry on next save. |
autumn setup not found | Run cargo install autumn-cli --version 0.5.0 |
Ctrl+C stops the server and the Tailwind watcher.