hermes-agent/hermes_cli
kshitijk4poor 00ec0b617c feat(tts): add register_tts_provider() plugin hook (closes #30398)
Adds a `TTSProvider(ABC)` + `register_tts_provider()` extension point
to the plugin context API, **alongside** the existing config-driven
`tts.providers.<name>: type: command` registry from PR #17843. This is
additive — the command-provider surface stays as the primary way to
add a TTS backend.

The hook covers cases the shell-template grammar can't reasonably
express:

- Native Python SDKs without a CLI (Cartesia, Fish Audio, etc.)
- Streaming synthesis (chunked Opus → voice-bubble delivery)
- Voice metadata API for the `hermes tools` picker
- OAuth-refreshing auth flows

None of the 10 inline built-in providers (`edge`, `openai`,
`elevenlabs`, `minimax`, `gemini`, `mistral`, `xai`, `piper`,
`kittentts`, `neutts`) are migrated to plugins. They stay inline. The
hook is for *new* engines that aren't built-in.

## Resolution order

The dispatcher's resolution order is the load-bearing invariant:

1. `tts.provider` is a built-in name → built-in dispatch. **Always wins.**
2. `tts.provider` matches `tts.providers.<name>` with `command:` set
   → command-provider dispatch (PR #17843).
3. `tts.provider` matches a plugin-registered `TTSProvider`
   → plugin dispatch (new).
4. No match → falls through to Edge TTS default (legacy behavior).

Built-ins-always-win is enforced at THREE layers:
- Registry: `register_provider()` rejects shadowing names with a warning.
- Dispatcher: `_dispatch_to_plugin_provider()` short-circuits built-in
  names defensively before consulting the registry.
- Picker: `_plugin_tts_providers()` filters built-in shadows out of
  the `hermes tools` row list defensively.

Command-providers-win-over-plugins is enforced at TWO layers:
- The caller in `text_to_speech_tool` checks
  `_resolve_command_provider_config` first.
- `_dispatch_to_plugin_provider` re-checks for a same-name command
  config defensively so a refactor of the caller can't silently break
  the invariant.

## New files

- `agent/tts_provider.py` — `TTSProvider(ABC)` with `synthesize()` (required),
  `list_voices()`, `list_models()`, `get_setup_schema()`, `stream()`,
  `voice_compatible` (all optional with sane defaults). Mirrors
  `agent/image_gen_provider.py` shape.
- `agent/tts_registry.py` — `register_provider`/`get_provider`/`list_providers`
  with `_BUILTIN_NAMES` reject-shadowing invariant. Mirrors
  `agent/image_gen_registry.py` shape.
- `plugins/tts/...` directory ready for community plugins (none shipped).

## Modified files

- `hermes_cli/plugins.py` — `register_tts_provider()` method on
  `PluginContext`. Matches the gating shape of
  `register_image_gen_provider()` / `register_browser_provider()`.
- `tools/tts_tool.py` — `_dispatch_to_plugin_provider()` +
  `_plugin_provider_is_voice_compatible()` + walrus-elif wiring into
  the main dispatcher. Built-in elif chain untouched.
- `hermes_cli/tools_config.py` — `_plugin_tts_providers()` injects
  plugin rows into the Text-to-Speech picker category alongside the
  10 hardcoded built-in rows.

## Tests

- `tests/agent/test_tts_registry.py` — 47 tests covering registration,
  lookup, ABC contract, helpers, AND a `TestBuiltinSync` regression
  test that fails if `agent.tts_registry._BUILTIN_NAMES` drifts from
  `tools.tts_tool.BUILTIN_TTS_PROVIDERS` (kept duplicated due to
  circular import constraints).
- `tests/tools/test_tts_plugin_dispatch.py` — 35 tests covering
  built-in-always-wins, command-wins-over-plugin, plugin dispatch,
  exception passthrough, voice_compatible helper.
- `tests/hermes_cli/test_tts_picker.py` — 10 tests covering the
  picker surface, builtin shadowing defense, integration with
  `_visible_providers`.
- `tests/hermes_cli/test_plugins_tts_registration.py` — 3 end-to-end
  tests via `PluginManager.discover_and_load()`.
- `tests/plugins/tts/check_parity_vs_main.py` — 9-scenario subprocess
  parity harness vs `origin/main`. The only intentional diff is
  `fallback_edge → plugin` for the `plugin-installed` scenario.

## Verification

- 95/95 new tests pass.
- 170/170 pre-existing TTS tests (test_tts_command_providers,
  test_tts_max_text_length, test_tts_speed, etc.) pass unchanged.
- Parity harness against `origin/main`: 8 OK + 1 expected DIFF.
- E2E smoke: a registered plugin's `synthesize()` is called via
  `text_to_speech_tool` with the standard JSON envelope returned.
- Ruff clean on all touched files.

## Docs

- `website/docs/user-guide/features/tts.md` — new "Python plugin
  providers" section with a decision table (command-provider vs
  plugin), minimal plugin example, and the optional-hook reference.
- `website/docs/user-guide/features/plugins.md` — TTS row updated to
  mention both surfaces (command-provider primary, plugin for
  SDK/streaming).

Closes #30398
2026-05-24 18:04:54 -07:00
..
proxy fix(security): validate Nous Portal inference_base_url against host allowlist 2026-05-22 14:17:40 -07:00
__init__.py chore: release v0.14.0 (2026.5.16) (#26862) 2026-05-16 02:58:57 -07:00
_parser.py Fix CLI verbose tool progress config fallback 2026-05-23 21:03:51 -07:00
_subprocess_compat.py feat(windows): close remaining POSIX-only landmines — TUI crash, kanban waitpid, AF_UNIX sandbox, /bin/bash, npm .cmd shims, cwd tracking, detach flags 2026-05-08 14:27:40 -07:00
auth.py security: harden API server key placeholder handling (#30738) 2026-05-24 04:25:32 -07:00
auth_commands.py feat(cli): wire --manual-paste into `hermes auth add and hermes model` 2026-05-18 20:10:52 -07:00
azure_detect.py feat(azure-foundry): add Microsoft Entra ID auth 2026-05-18 10:14:38 -07:00
backup.py chore: ruff auto-fix PLR6201 — tuple → set in membership tests (#23937) 2026-05-11 11:13:25 -07:00
banner.py refactor: DRY cleanup from code review 2026-05-15 14:45:43 -07:00
browser_connect.py feat: auto-launch Chromium-family browser for CDP 2026-05-19 22:34:05 -07:00
bundles.py feat(skills): add skill bundles — alias /<name> loads multiple skills (#28373) 2026-05-18 21:38:05 -07:00
callbacks.py fix: ESC cancels secret/sudo prompts, clearer skip messaging (#9902) 2026-04-14 16:11:37 -07:00
checkpoints.py chore: ruff auto-fix PLR6201 — tuple → set in membership tests (#23937) 2026-05-11 11:13:25 -07:00
claw.py chore: ruff auto-fix PLR6201 — tuple → set in membership tests (#23937) 2026-05-11 11:13:25 -07:00
cli_output.py refactor: remove dead code — 1,784 lines across 77 files (#9180) 2026-04-13 16:32:04 -07:00
clipboard.py fix(clipboard): only read PNG signature bytes, not entire file 2026-05-13 22:54:21 -07:00
codex_models.py chore: ruff auto-fix PLR6201 — tuple → set in membership tests (#23937) 2026-05-11 11:13:25 -07:00
codex_runtime_plugin_migration.py fix(codex-runtime): de-dup [plugins.X] tables and stop leaking HERMES_HOME into config.toml 2026-05-15 02:31:30 -07:00
codex_runtime_switch.py chore: ruff auto-fix PLR6201 resweep — tuple → set in membership tests (#27355) 2026-05-17 02:29:41 -07:00
colors.py feat: respect NO_COLOR env var and TERM=dumb (#4079) 2026-03-30 17:07:21 -07:00
commands.py feat(skills): add opt-in AST deep diagnostics 2026-05-23 17:47:26 -07:00
completion.py test(cli): strengthen zsh completion regression coverage 2026-05-13 09:34:15 -07:00
config.py feat(config): document resume-recap tuning keys in DEFAULT_CONFIG 2026-05-24 15:36:37 -07:00
copilot_auth.py chore: ruff auto-fix PLR6201 — tuple → set in membership tests (#23937) 2026-05-11 11:13:25 -07:00
cron.py feat: add cron job profile support 2026-05-18 17:39:50 +00:00
curator.py chore: ruff auto-fix PLR6201 — tuple → set in membership tests (#23937) 2026-05-11 11:13:25 -07:00
curses_ui.py fix(cli): clamp curses color 8 for 8-color terminals (Docker) 2026-05-21 23:40:58 -07:00
debug.py fix(debug): redact BlueBubbles webhook secrets 2026-05-24 15:43:48 -07:00
default_soul.py fix: reset default SOUL.md to baseline identity text (#3159) 2026-03-26 01:34:27 -07:00
dep_ensure.py feat(dep_ensure): complete Windows bootstrap — dep_ensure + install.ps1 + detection (#27845) 2026-05-18 16:34:24 +05:30
dingtalk_auth.py chore: ruff auto-fix PLR6201 — tuple → set in membership tests (#23937) 2026-05-11 11:13:25 -07:00
doctor.py feat(doctor): surface xAI model retirement in hermes doctor 2026-05-20 09:18:23 -07:00
dump.py fix(skills): prune dependency/venv dirs from all skill scanners (#30042) 2026-05-21 14:18:02 -07:00
env_loader.py feat(secrets/bitwarden): EU Cloud + self-hosted server URL support (#31378) 2026-05-24 02:19:57 -07:00
fallback_cmd.py fix(fallback): merge fallback_providers with legacy fallback_model configurations 2026-05-23 05:24:57 -07:00
fallback_config.py fix(fallback): merge fallback_providers with legacy fallback_model configurations 2026-05-23 05:24:57 -07:00
gateway.py fix(gateway): stop enabling dingtalk allow-all during setup (#30743) 2026-05-24 04:24:44 -07:00
gateway_windows.py fix(gateway-windows): atomic write for .cmd and startup launcher scripts 2026-05-23 02:30:41 -07:00
goals.py feat: inject current time into goal judge prompt 2026-05-16 23:05:27 -07:00
hooks.py chore: ruff auto-fix PLR6201 — tuple → set in membership tests (#23937) 2026-05-11 11:13:25 -07:00
inventory.py refactor(inventory): extract shared ConfigContext + build_models_payload 2026-05-13 22:31:11 -07:00
kanban.py feat(kanban): --ids bulk promote + AUTHOR_MAP entry for #29464 2026-05-23 23:10:36 -07:00
kanban_db.py fix(kanban): scratch tasks must not inherit board.default_workdir (#28818) 2026-05-24 15:48:58 -07:00
kanban_decompose.py fix: assign single-task kanban decompositions 2026-05-18 20:26:02 -07:00
kanban_diagnostics.py fix(kanban): honor severity thresholds in diagnostics 2026-05-18 20:47:01 -07:00
kanban_specify.py fix(cli): make kanban specify max_tokens configurable 2026-05-18 20:15:20 -07:00
kanban_swarm.py feat(cli): add kanban swarm topology helper 2026-05-18 21:10:12 -07:00
logs.py feat: component-separated logging with session context and filtering (#7991) 2026-04-11 17:23:36 -07:00
main.py feat(security): on-demand supply-chain audit via OSV.dev (#31460) 2026-05-24 15:15:16 -07:00
mcp_config.py fix(mcp): pre-compile env-var regex and unify interpolation 2026-05-15 01:43:54 -07:00
memory_setup.py fix: restrict .env file permissions to 0600 2026-05-14 07:59:38 -07:00
migrate.py feat(cli): hermes migrate xai [--apply] [--no-backup] 2026-05-20 09:18:23 -07:00
model_catalog.py codebase: add encoding='utf-8' to all bare open() calls (PLW1514) 2026-05-08 14:27:40 -07:00
model_normalize.py fix(opencode-go): keep users on opencode-go instead of hijacking to native providers (#20802) 2026-05-06 09:08:33 -07:00
model_switch.py fix(model-switch): mark bare custom provider as current 2026-05-19 10:57:35 -07:00
models.py fix: detect gh-copilot deprecation and improve GitHub Models 413 errors (#10648) 2026-05-16 02:24:48 -07:00
nous_subscription.py feat(web): add SearXNG as a native search-only backend 2026-05-06 10:05:29 -07:00
oneshot.py fix(provider): make config.yaml model.provider the single source of truth (#31222) 2026-05-23 18:18:41 -07:00
pairing.py fix(pairing): enforce lockout on approve_code, not just generate_code (#10195) (#21325) 2026-05-07 07:18:21 -07:00
platforms.py feat: complete plugin platform parity — all 12 integration points 2026-04-29 21:56:51 -07:00
plugins.py feat(tts): add register_tts_provider() plugin hook (closes #30398) 2026-05-24 18:04:54 -07:00
plugins_cmd.py fix(plugins): widen _sanitize_plugin_name for category-namespaced names 2026-05-22 19:50:32 -07:00
portal_cli.py feat(portal): one-shot setup, status CLI, and Nous-included markers (#30860) 2026-05-23 02:39:09 -07:00
profile_describer.py fix(skills): prune dependency/venv dirs from all skill scanners (#30042) 2026-05-21 14:18:02 -07:00
profile_distribution.py fix(skills): prune dependency/venv dirs from all skill scanners (#30042) 2026-05-21 14:18:02 -07:00
profiles.py fix(skills): prune dependency/venv dirs from all skill scanners (#30042) 2026-05-21 14:18:02 -07:00
providers.py fix: add default base_url_override for ollama-cloud provider 2026-05-18 14:31:37 -07:00
pt_input_extras.py fix(cli): make Ctrl+Enter insert newline on WSL/SSH/Windows Terminal (#22777) 2026-05-09 12:48:14 -07:00
pty_bridge.py chore: ruff auto-fix PLR6201 — tuple → set in membership tests (#23937) 2026-05-11 11:13:25 -07:00
relaunch.py fix(windows): prefer npm.cmd over npm.ps1, skip .py argv0 in relaunch 2026-05-08 14:27:40 -07:00
runtime_provider.py fix(custom): pass custom provider extra body 2026-05-21 07:48:53 -07:00
secrets_cli.py feat(secrets/bitwarden): EU Cloud + self-hosted server URL support (#31378) 2026-05-24 02:19:57 -07:00
security_advisories.py feat(security): supply-chain advisory checker + lazy-install framework + tiered install fallback (#24220) 2026-05-12 01:02:25 -07:00
security_audit.py feat(security): on-demand supply-chain audit via OSV.dev (#31460) 2026-05-24 15:15:16 -07:00
send_cmd.py fix(review): address Copilot follow-up on sanitizer and file decode errors 2026-05-16 23:00:58 -05:00
session_recap.py chore: ruff auto-fix PLR6201 resweep — tuple → set in membership tests (#27355) 2026-05-17 02:29:41 -07:00
setup.py fix(matrix,gateway): Matrix E2EE installs full dep set; plugins respect is_connected 2026-05-24 15:16:03 -07:00
skills_config.py refactor(config): migrate remaining 33 cfg_get call sites (#17311) 2026-04-29 04:03:03 -07:00
skills_hub.py refactor(skills): slim AST diagnostic to single entry point 2026-05-23 17:47:26 -07:00
skin_engine.py fix(tui): improve charizard completion menu contrast 2026-05-18 20:05:23 -07:00
slack_cli.py fix(slack): enable writable app home DMs in manifest 2026-05-08 17:01:12 -07:00
status.py refactor(ntfy): convert built-in adapter to platform plugin 2026-05-23 16:13:01 -07:00
stdio.py chore: ruff auto-fix PLR6201 — tuple → set in membership tests (#23937) 2026-05-11 11:13:25 -07:00
timeouts.py perf(agent-loop): cut 47% of per-conversation function calls via 3 targeted hot-path optimizations (#28866) 2026-05-19 14:25:10 -07:00
tips.py feat: auto-launch Chromium-family browser for CDP 2026-05-19 22:34:05 -07:00
tools_config.py feat(tts): add register_tts_provider() plugin hook (closes #30398) 2026-05-24 18:04:54 -07:00
uninstall.py docs(windows): avoid piping installer directly into iex 2026-05-18 20:05:47 -07:00
vercel_auth.py feat: add Vercel Sandbox backend 2026-04-29 07:22:33 -07:00
voice.py fix(tui): restore voice push-to-talk parity (#20897) 2026-05-06 15:49:59 -07:00
web_server.py Protect dashboard OAuth credentials with the same file-safety guarantees as other auth paths 2026-05-24 17:47:24 -07:00
webhook.py fix(state): restrict sensitive store file permissions 2026-05-24 04:55:18 -07:00
xai_retirement.py fix(xai): align migrate retirement map with docs 2026-05-20 09:18:23 -07:00