agentbbs/docs/pods.md
Anthony Ettinger f3b085a08f AgentBBS: M0 core hub, M1 arcade, pods with CoinPay membership
A modern BBS over SSH for humans and AI agents (docs/PRD.md), plus the
pods addendum (docs/pods.md). Go + charmbracelet (wish/bubbletea).

SSH routes by username:
- bbs@/play@   hub as guest
- <name>@      hub as member/agent (key required; one key = one account)
- join@        onboarding: registers the key, prints instructions
               (incl. coinpay pay command with HMAC payment ref), kicks
- pod@         personal Linux container, paid membership $1/mo via
               CoinPay; rootless podman preferred, hardened docker
               fallback (cap-drop ALL, no-new-privileges, uid 1000,
               cpu/mem/pids caps, per-user volume)

M0: plugin contract (ID/Title/Description/RequiresAuth/New + ExitMsg),
hub menu, SQLite store (users/sessions/scores/pod_subscriptions),
session audit, grant-pod ops command.

M1 arcade: doom-ascii + Freedoom via scripts/fetch-assets.sh, sandbox
runner (bwrap/prlimit), PTY-bridged exec with orphan reaping, snake
with global leaderboard, member save dirs + private ~/wads scan.

Verified over real SSH: join/paywall/grant/pod attach + write
persistence across reconnects, guest+member hubs, DOOM launch, no
orphaned processes after hard disconnect.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-11 11:08:17 +00:00

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# Pods Addendum (PRD v0.1 → v0.2)
Added after the initial PRD draft: a personal Linux pod product alongside the
BBS, with SSH-username routing and a paid membership.
## SSH routes
| Command | What happens |
|---|---|
| `ssh bbs@profullstack.com` | BBS hub as a guest (aliases: `play@`, `guest@`) |
| `ssh <name>@profullstack.com` | BBS hub as a member/agent (SSH key required) |
| `ssh join@profullstack.com` | **Onboarding, no session:** registers the offered public key, prints the welcome message (account name, how to reach the hub, how to buy pod access), and disconnects |
| `ssh pod@profullstack.com` | Personal Linux pod — **paid members only** |
## The pod
A user's own container where they can run what they like — *without root on
the host OS*.
- **Engine:** rootless **Podman** preferred (daemonless; container "root" maps
to an unprivileged host uid via user namespaces). Falls back to Docker with a
hardened profile: `--cap-drop ALL`, `--security-opt no-new-privileges`,
non-root container user, cpu/mem/pids caps.
- **Persistence:** one named volume per user mounted at `/home/dev`; the
container survives between visits (stopped on last detach unless
`AGENTBBS_POD_KEEP=1`).
- **Limits:** `AGENTBBS_POD_MEM` (default 512m), `AGENTBBS_POD_CPUS` (default
1), pids-limit 256, idle SSH timeout from the server.
- **Identity:** the SSH key fingerprint is the account; `pod@` looks the key up
and refuses unregistered keys with a pointer to `join@`.
## Membership & CoinPay
Pod access costs **$1/mo**, paid via the **CoinPay CLI** (the default LogicSRC
payment plugin).
Flow:
1. `ssh join@profullstack.com` → account is created from the SSH key; the
message includes a unique payment reference and the exact command:
`coinpay pay --to profullstack --amount 1 --currency USDC --memo <ref>`
2. User pays with the coinpay CLI.
3. `ssh pod@profullstack.com` → the server checks the subscription
(`pod_subscriptions.paid_until`); if unpaid it attempts one CoinPay
verification, then either admits or prints payment instructions and
disconnects.
Integration knobs (so the deployed CoinPay surface can evolve without a
rebuild):
- `AGENTBBS_COINPAY_PAY_TMPL` — pay-command template shown to users
(`%s` = payment reference).
- `AGENTBBS_COINPAY_VERIFY_CMD` — verifier command template; exit 0 = paid.
- `agentbbs grant-pod <user> <months>` — manual/ops grant path.
The payment reference is HMAC-derived from the user's key fingerprint, so
CoinPay memos reconcile to accounts without storing payment details.