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|
{
config,
pkgs,
lib,
hermes-agent,
...
}:
let
inherit (lib) mkEnableOption mkIf mkMerge;
cfg = config.foundation.agent;
agentPublicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAppvnIQdnwggxcsNtm7ij85qjABRHe2b4/NGwCfzTr5 agent";
# the set of tools the agent has access to by default.
# it should also always be able to call `nix-shell` to gain access to more tools.
agentPackages = with pkgs; [
nix
nixfmt-rfc-style
openssh
tailscale
docker_29
jq
yq-go
ripgrep
fd
tree
file
unzip
gnused
gawk
curl
wget
htop
glances
lsof
iproute2
iputils
inetutils
dig
tcpdump
nmap
git
vim
];
in
{
imports = [
hermes-agent.nixosModules.default
];
options.foundation.agent = {
home = mkEnableOption "the 'renard' agent to live on this machine";
neighbor = mkEnableOption "letting the 'renard' agent access this machine";
};
config = mkMerge [
# both the home and each neighbor have a user for the agent,
# the identity of the user is the same on the entire fleet.
(mkIf (cfg.home || cfg.neighbor) {
users = {
groups.renard = { };
users.renard = {
isSystemUser = true;
group = "renard";
home = "/home/renard";
createHome = true;
shell = pkgs.bashInteractive;
packages = agentPackages;
openssh.authorizedKeys.keys = [ agentPublicKey ];
};
};
systemd.tmpfiles.rules = [
"d /home/renard/.ssh 0700 renard renard - -"
];
age.secrets.renard-agent-private-key = {
file = ../../secrets/agent/private-key.age;
path = "/home/renard/.ssh/id_ed25519";
owner = "renard";
group = "renard";
mode = "0600";
};
})
# the agent lives at home.
(mkIf cfg.home {
age.secrets.renard-agent-environment = {
file = ../../secrets/agent/environment.age;
owner = "renard";
group = "renard";
mode = "0440";
};
services.hermes-agent = {
enable = true;
user = "renard";
group = "renard";
stateDir = "/home/renard";
createUser = false;
extraDependencyGroups = [ "messaging" ];
# both the user and the path house the same package set
extraPackages = agentPackages;
environmentFiles = [
# required secrets:
# * OPENROUTER_API_KEY
# * DISCORD_BOT_TOKEN
# * DISCORD_ALLOWED_USERS
config.age.secrets.renard-agent-environment.path
];
documents = {
"SOUL.md" = ../../assets/agent/SOUL.md;
};
settings = {
model = {
provider = "openrouter";
# my current favorite budget model, with recent price
# changes by far the cheapest for the performance,
# with other chinese models also being close.
# only modality is text, requires auxiliary vision model!
# native price: $0.44/m in, $0.87/m out.
default = "deepseek/deepseek-v4-pro";
};
agent = {
reasoning_effort = "high"; # 'high' rated highest in benchmarks, tune to taste!
max_turns = 90;
};
auxiliary.vision = {
# auxiliary vision model for image comprehension.
# this qwen model is built for this exact use-case and is extremely
# cheap for the performance (though below gemini), however,
# it does not do any reasoning on the visual input!
# possible upgrade path for reasoning: qwen3-vl-30b-a3b-thinking
# native price: $0.13/m in, $1.56/m out.
provider = "openrouter";
model = "qwen/qwen3-vl-32b-instruct";
timeout = 120;
};
toolsets = [ "all" ];
terminal = {
backend = "local";
persistent_shell = true;
timeout = 180;
};
memory = {
memory_enabled = true;
user_profile_enabled = true;
};
# slightly higher limits and targets than default for better
# long session preservation.
compression = {
enabled = true;
threshold = 0.75;
target_ratio = 0.35;
protect_last_n = 40;
};
# progressive message editing, a little silly in discord but looks like
# the classic llm chats.
streaming = {
enabled = true;
};
display = {
streaming = true; # small regression with streaming.enabled, keep both on.
tool_progress = "new"; # only show fresh new tool calls, not every call.
};
discord = {
require_mention = false;
thread_require_mention = false;
auto_thread = false;
reactions = true;
history_backfill = true;
allow_mentions = {
everyone = false;
roles = false;
users = true;
replied_user = true;
};
};
unauthorized_dm_behavior = "ignore"; # ignore strangers
timezone = "Europe/Berlin";
group_sessions_per_user = false;
};
};
})
];
}
|
