hermes-agent/website/docs/user-guide/egress
teknium1 906b1da57f docs(egress): comprehensive expansion — setup, config, troubleshooting,
internals reference

Pre-v3 the egress docs were 175 lines covering the basics: quick start,
slash commands, security model, failure modes.  After three rounds of
PR review we added a half-dozen new config knobs, two new flags, a
strict/warn tier split for uncovered providers, persisted-nonce
cross-process defense, audit-log + log-file separation, NODE_OPTIONS
append-merge, docker_env collision detection, etc. — none of which
the user-facing doc reflected.

This commit closes that gap end-to-end:

website/docs/user-guide/egress/iron-proxy.md (175 → 567 lines)
- Configuration section expanded with every new knob:
  fail_on_uncovered_providers, allow_env_fallback, upstream_deny_cidrs.
- Tables for default allowed hosts + default deny CIDRs.
- Bind policy section (loopback + docker bridge, NOT 0.0.0.0) with the
  operator-facing "why can't I hit the proxy from my LAN" answer.
- Uncovered providers section with the strict tier (Anthropic / Azure
  / Gemini — block when fail_on_uncovered_providers=true) vs warn tier
  (AWS, GCP appdefault — present on every dev laptop, never block).
- Bitwarden integration expanded: rotation semantics, fail-loud at
  start, the allow_env_fallback escape hatch, --no-bitwarden flag, the
  preserve-existing-source rule on plain re-setup.
- Slash commands section with --no-bitwarden, --rotate-tokens, and the
  token-rotation operator playbook (confirmation gate, backup file
  naming, restart-required caveat).
- State directory layout table covering all 9 files we create + their
  modes.
- Audit log vs daemon log distinction (the arshkumarsingh #2 fix that
  motivated the corrected diagram).
- CA distribution into the sandbox: full table of injected env vars,
  the Python/curl REPLACE vs Node ADD asymmetry caveat with the
  NODE_OPTIONS=--use-openssl-ca mitigation.
- docker_env collision detection: what gets blocked, what gets warned,
  the migration escape hatch.
- PID + nonce defense section explaining how iron-proxy.nonce works
  cross-CLI and the SIGKILL-suppress-on-recycle path.
- Security model expanded with the new defenses
  (IPv4-mapped-v6 IMDS bypass closure, env-var leakage prevention,
  LAN-peer-with-token-leak coverage).
- Failure modes extended for every new refuse-start path.
- Troubleshooting section (180 new lines) with grep-friendly error
  matchers for each common failure: BWS token missing, uncovered
  provider refused, port collision, slow bind, 403 from proxy, SSL
  verification errors inside the sandbox, 401 from upstreams, address-
  in-use orphan recovery, per-request audit log inspection.

website/docs/getting-started/quickstart.md
- One-paragraph mention of the egress proxy under "Sandboxed terminal"
  so operators discover the feature when they enable Docker isolation.

website/docs/reference/cli-commands.md
- Top-level command table now lists `hermes egress` alongside `hermes
  proxy` (different purpose, different direction — call it out).
- New `## hermes egress` section with full subcommand syntax, common
  flows (first-time setup, switching credential source, rotating
  tokens, adding upstream), and diagnostic shortcuts.

website/docs/reference/environment-variables.md
- New "Egress proxy (sandbox-injected)" section documenting every env
  var the Docker backend injects: HERMES_EGRESS_PROXY,
  HERMES_PROXY_TOKEN_<NAME>, HTTPS_PROXY/HTTP_PROXY/NO_PROXY,
  REQUESTS_CA_BUNDLE/SSL_CERT_FILE/CURL_CA_BUNDLE/NODE_EXTRA_CA_CERTS,
  NODE_OPTIONS append-merge, HERMES_IRON_PROXY_NONCE.
- Also fixes a stale layout issue with the Persistent Shell table that
  had two trailing rows getting orphaned in the v3 commit.

website/docs/developer-guide/egress-internals.md (NEW, 363 lines)
- Module layout map (which file owns what).
- Full lifecycle walkthrough for install / setup / start / stop with
  the actual function calls in order.
- "Security invariants" section enumerating every load-bearing property
  with the regression test name that guards it.  These are the rules
  contributors must preserve when touching the module:
  - filesystem perms (0o700 dir, 0o600 secrets, O_NOFOLLOW everywhere)
  - subprocess env minimisation (no os.environ.copy)
  - bind policy (loopback + docker bridge, never 0.0.0.0)
  - default deny CIDR coverage
  - audit log fail-loud
  - bitwarden fail-loud
  - docker_env collision detection
  - PID recycling defense
  - token preservation on re-setup
  - credential_source preservation
- Extension points: adding a bearer-token provider, adding a
  non-bearer provider, wiring iron-proxy into a non-Docker backend,
  subscribing to per-request audit events.
- Testing recipe (hermetic + E2E + CLI smoke).

website/sidebars.ts
- New `developer-guide/egress-internals` entry under Developer Guide
  → Internals (alongside acp-internals, cron-internals,
  trajectory-format).

Build verification
- `cd website && npm install && npx docusaurus build` succeeds locally.
- All three new pages render to static HTML in all three locales
  (en + zh-Hans + ko).
- No new broken links or broken anchors introduced (pre-existing
  warnings on translation stubs are unrelated).
2026-05-25 15:05:16 -07:00
..
index.md feat(egress): iron-proxy credential-injection firewall for sandboxes 2026-05-23 20:38:27 -07:00
iron-proxy.md docs(egress): comprehensive expansion — setup, config, troubleshooting, 2026-05-25 15:05:16 -07:00