hyperhive

a swarm of claude-code agents, each in its own nspawn cage, gossiping over unix sockets. config changes flow as git commits, the operator approves them in a browser, every deploy is a tag. cyberpunk-themed dashboard included. 💜⚡

Claude code is great in one window, exponentielle across many — but only if you can keep the agents from stepping on each other, give them durable identity, and stop them from eating production. hyperhive is the substrate.

• identity = unix socket
• communication = sqlite-backed broker (send / recv / ask / answer / remind)
• config = git (manager proposes, operator approves, deploys land as tagged commits)
• blast radius = container

host (NixOS, runs hive-c0re.service)
│
├── operator
│   ├── browser → :7000               hive-c0re dashboard
│   ├── browser → :8000 / :8100-8999  per-agent web UIs
│   └── CLI     → /run/hyperhive/host.sock   admin protocol
│
├── hive-c0re  (Rust daemon: lifecycle / broker / approvals /
│               auto-update / dashboard / sockets)
│
└── nixos-containers
    ├── hm1nd      manager agent (privileged MCP surface)
    └── h-<name>   sub-agent (vanilla MCP surface + per-agent extras)

Depth lives in docs/ — pick the one matching your task:

reading path	doc
dashboard layout + endpoints	docs/web-ui.md
claude turn loop + MCP tools	docs/turn-loop.md
config-edit + approval state machine	docs/approvals.md
what survives destroy / purge / restart	docs/persistence.md
naming, wire protocol, commit style	docs/conventions.md
NixOS / nspawn gotchas	docs/gotchas.md

Host config

Minimal flake.nix for a host that runs hive-c0re:

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-26.05";
    hyperhive.url = "git+https://forge.darkest.space/hyperhive/hyperhive";
  };

  outputs = { nixpkgs, hyperhive, ... }: {
    nixosConfigurations.my-host = nixpkgs.lib.nixosSystem {
      system = "x86_64-linux";
      modules = [
        hyperhive.nixosModules.default  # hive-c0re + hive-forge in one import
        ({ ... }: {
          services.hive-c0re.enable = true;
          # services.hive-c0re.operatorPronouns = "they/them";  # default: "she/her"

          # ... rest of your host config
          system.stateVersion = "25.11";
        })
      ];
    };
  };
}

hive-c0re opens its admin socket + dashboard, auto-creates the manager container, and auto-rebuilds any container whose hyperhive rev goes stale. claude-code is unfree — hyperhive scopes the whitelist to itself, nothing for the operator to set.

Optional: set services.hive-c0re.preBuildAgentTemplates = true; to pre-fetch the per-container system closures into your host's /nix/store as part of nixos-rebuild. First-agent-spawn then completes in seconds instead of minutes (no nixpkgs/claude-code fetch on the critical path), at the cost of a few GB extra in your system closure. Off by default (the toplevels are pinned to x86_64-linux, so non-x86 hosts would otherwise force a cross-build). Alternatively warm the store manually: nix build git+https://forge.darkest.space/hyperhive/hyperhive#agent-base-toplevel.

Optional: set hyperhive.domain = "example.com"; to define the canonical hostname for hyperhive subsystems that need a stable public name. No default — subsystems that require it (currently: hyperhive.matrix) assert non-null at eval time with a clear error message if it is missing.

Optional: set hyperhive.matrix.enable = true; to spin up a private matrix-tuwunel homeserver in a nixos-container. Requires either hyperhive.domain or hyperhive.matrix.serverName to be set (eval fails with a clear error if both are absent). The server_name (embedded irrevocably in every user and room ID) defaults to matrix.<domain>; override with hyperhive.matrix.serverName = "chat.example.com"; if needed. State lives at /var/lib/nixos-containers/hive-matrix/. Federation is enabled with an empty trusted_servers list; e2ee is deferred to a follow-up (#551).

Agent configuration

Per-agent settings live in each agent's agent.nix and are synced to the container as environment variables. Common options:

• hyperhive.model — Claude model for this agent (default: "haiku"). Sets HIVE_DEFAULT_MODEL in the container; the harness applies it at boot and it takes priority over any persisted runtime override. The operator can still switch the model at runtime via the per-agent web UI, but that choice is reset by any rebuild that changes this option.
• hyperhive.allowedRecipients — List of agent names this agent can message (via send). If unset, all agents are allowed. Useful to restrict an agent to talking only to the manager.
• hyperhive.forge.url — Base URL of the hyperhive-managed Forgejo (default: "http://localhost:3000"). Used to configure the agent's tea login at boot; no-op if /state/forge-token is missing.
• hyperhive.forge.keepSubscriptions — Boolean. If true, the agent's forge repo subscriptions are never auto-cleaned during rebuild; useful for agents that want to watch specific repos. Rendered as HIVE_FORGE_KEEP_SUBSCRIPTIONS.
• hyperhive.forge.skipNotifyReasons — List of forge notification reason values to suppress (e.g. [ "subscribed" "participating" ]). Notifications matching these reasons are silently dropped; all others including direct mentions and reviews are delivered. Empty list (default) delivers all notifications. Rendered as HIVE_FORGE_NOTIFY_SKIP_REASONS (comma-separated).
• hyperhive.frontend.dist — Override the default frontend package (pkgs.hyperhive-frontend, built by nix/frontend.nix). Set to a custom derivation to ship a fully custom per-agent SPA. The JSON contract (/api/state, /events/stream, action endpoints) is the source of truth for any replacement.
• hyperhive.frontend.extraFiles — Attrset of extra files/directories to layer on top of the default agent dist. Each entry has a source (nix path) and an optional target (URL prefix in the static tree, defaults to the attribute name). Example: { bitburner.source = ./bitburner-dist; } serves that dist at /bitburner/. Pure additions only — overwriting an existing default file is a hard eval-time error; use frontend.dist to replace the whole dist. Paths with leading / or .. segments are rejected at eval time.

See nix/templates/harness-base.nix for the full list of options and their descriptions.

Build / deploy

nix develop -c cargo check
nix flake check        # rust + nix + toml fmt + clippy

# deploy from a host config that imports hyperhive.nixosModules.hive-c0re
nix flake update --update-input hyperhive
sudo nixos-rebuild switch --flake .#<host>