NonGNU-devel ELPA: hermes

Hermes Agent with dashboard/TUI gateway support is required.

• See the Hermes Agent quickstart for installation and initial setup.

M-x hermes opens the dashboard. M-x hermes-project-chat switches to a live chat for the current project or creates one at its root; with C-u it always creates another. Project-chat names stay anchored to that launching project while the header reports the gateway working directory. Customize hermes-chat-buffer-name-function to replace the default complete naming convention. A direct or resumed remote chat uses the editor directory in its initial buffer name while its gateway cwd is unknown. Its header stays detached, and the editor path is not sent to the gateway. M-x hermes-chat always opens a new chat buffer:

• RET to send.
• / for slash commands.
• C-c C-o for the actions menu.
• Each chat pins its resolved spawned or remote transport mode. A spawned chat starts from the editor's default-directory; a remote chat does not.
• Passive gateway cwd updates change the header and a direct chat's buffer name, but leave default-directory alone.
• “Set directory” browses or accepts a path in the gateway's namespace. On success, the backend-returned path becomes both the gateway cwd and the buffer's default-directory; a project chat keeps its launch-root name.
• M-x hermes-close closes local connections and Hermes buffers for restart.

Point hermes-dashboard-transport-url at your running dashboard:

hermes dashboard --no-open --tui --host 127.0.0.1 --port 9119

To use more than one dashboard, configure named instances:

(setq hermes-instances
      '(("local" . "http://127.0.0.1:9119")
        ("remote" . "https://dashboard.example.org")))

Commands prompt for an instance only when the current buffer does not already own one. Chat buffers retain their original instance and resolved transport mode, so later configuration changes cannot reroute them. Chats against different dashboards can stay open at the same time. Browser views retain their chosen instance until explicitly reopened for another one.

hermes-dashboard-transport-remote-auth-method defaults to auto:

• Loopback dashboards (127.0.0.1 / localhost) can spawn or attach without extra credentials when the dashboard is not gated.
• Remote or gated dashboards probe /api/status. Auto mode uses valid stored basic credentials first, otherwise native PKCE when advertised, and finally reports missing basic credentials for a basic-only dashboard.

Supported gated attach paths:

1. Basic/password — auth-source entry with port hermes-dashboard-basic, login username, and password secret. Emacs posts password-login cookies and mints a WebSocket ticket.
2. Native PKCE OAuth — when /api/status advertises native_pkce, Emacs opens the system browser, completes the official /auth/native/* loopback flow, stores access/refresh tokens in auth-source under login/port hermes-dashboard-native, authenticates REST with Authorization: Bearer, and mints a short-lived WebSocket ticket. Failed or cancelled login does not overwrite prior stored tokens.
3. Legacy session token — auth-source entry with login/port hermes-dashboard-token and the token as secret, or environment variable HERMES_DASHBOARD_SESSION_TOKEN. Used for ungated dashboards and forced token mode.

Force native, basic, or token to bypass auto selection:

(setq hermes-dashboard-transport-remote-auth-method 'native) ; or 'basic / 'token / 'auto

Generic auth-source examples (replace host/port/values; never commit real secrets):

machine https://dashboard.example.org:9119 login hermes-dashboard-native password {"access_token":"…","refresh_token":"…","expires_at":0,"provider":"oauth","user_id":""}
machine https://dashboard.example.org:9119 login admin password s3cret port hermes-dashboard-basic
machine https://dashboard.example.org:9119 login hermes-dashboard-token password SESSIONTOKEN port hermes-dashboard-token

If a gated dashboard advertises neither native_pkce nor a basic provider, Emacs refuses attach with an actionable error. Cookie-only browser OAuth without native_pkce remains unsupported.

The dashboard/TUI connection above drives chat and management. Two separate, optional paths let Hermes call into Emacs:

• hermes-capabilities is the native dashboard capability-provider path.
• hermes-exec is the HTTP eval endpoint used by the external stdio MCP bridge, hermes-emacs-plugin.

To use the stdio MCP bridge, install it from Git, enable the endpoint, then copy its registration command:

pipx install git+https://git.thanosapollo.org/hermes-emacs-plugin

(require 'hermes-exec)
(setq hermes-exec-enabled t
      hermes-exec-host "127.0.0.1"
      hermes-exec-require-approval t)
(hermes-exec-start)
;; M-x hermes-exec-show-bridge-command

The generated command registers the packaged hermes-emacs-mcp entry point. For a non-loopback private address, also set the same EMACS_EXEC_TOKEN for Emacs and the bridge. Do not expose the eval endpoint on a public interface.

Desktop notifications default to completed chat replies, terminal chat errors, input requests, background-task results, and Kanban states that need attention. Cron failures use the same policy when cron failure monitoring is enabled. They are suppressed when the target buffer is already visible on the focused frame. Customize the event set, or set it to nil to disable notifications:

(setq hermes-notifications-events
      '(chat-reply chat-error prompt background
        kanban-attention cron-failure kanban-done))