hermes-agent/agent
Teknium ff9752410a
feat(plugins): pluggable image_gen backends + OpenAI provider (#13799)
* feat(plugins): pluggable image_gen backends + OpenAI provider

Adds a ImageGenProvider ABC so image generation backends register as
bundled plugins under `plugins/image_gen/<name>/`. The plugin scanner
gains three primitives to make this work generically:

- `kind:` manifest field (`standalone` | `backend` | `exclusive`).
  Bundled `kind: backend` plugins auto-load — no `plugins.enabled`
  incantation. User-installed backends stay opt-in.
- Path-derived keys: `plugins/image_gen/openai/` gets key
  `image_gen/openai`, so a future `tts/openai` cannot collide.
- Depth-2 recursion into category namespaces (parent dirs without a
  `plugin.yaml` of their own).

Includes `OpenAIImageGenProvider` as the first consumer (gpt-image-1.5
default, plus gpt-image-1, gpt-image-1-mini, DALL-E 3/2). Base64
responses save to `$HERMES_HOME/cache/images/`; URL responses pass
through.

FAL stays in-tree for this PR — a follow-up ports it into
`plugins/image_gen/fal/` so the in-tree `image_generation_tool.py`
slims down. The dispatch shim in `_handle_image_generate` only fires
when `image_gen.provider` is explicitly set to a non-FAL value, so
existing FAL setups are untouched.

- 41 unit tests (scanner recursion, kind parsing, gate logic,
  registry, OpenAI payload shapes)
- E2E smoke verified: bundled plugin autoloads, registers, and
  `_handle_image_generate` routes to OpenAI when configured

* fix(image_gen/openai): don't send response_format to gpt-image-*

The live API rejects it: 'Unknown parameter: response_format'
(verified 2026-04-21 with gpt-image-1.5). gpt-image-* models return
b64_json unconditionally, so the parameter was both unnecessary and
actively broken.

* feat(image_gen/openai): gpt-image-2 only, drop legacy catalog

gpt-image-2 is the latest/best OpenAI image model (released 2026-04-21)
and there's no reason to expose the older gpt-image-1.5 / gpt-image-1 /
dall-e-3 / dall-e-2 alongside it — slower, lower quality, or awkward
(dall-e-2 squares only). Trim the catalog down to a single model.

Live-verified end-to-end: landscape 1536x1024 render of a Moog-style
synth matches prompt exactly, 2.4MB PNG saved to cache.

* feat(image_gen/openai): expose gpt-image-2 as three quality tiers

Users pick speed/fidelity via the normal model picker instead of a
hidden quality knob. All three tier IDs resolve to the single underlying
gpt-image-2 API model with a different quality parameter:

  gpt-image-2-low     ~15s   fast iteration
  gpt-image-2-medium  ~40s   default
  gpt-image-2-high    ~2min  highest fidelity

Live-measured on OpenAI's API today: 15.4s / 40.8s / 116.9s for the
same 1024x1024 prompt.

Config:
  image_gen.openai.model: gpt-image-2-high
  # or
  image_gen.model: gpt-image-2-low
  # or env var for scripts/tests
  OPENAI_IMAGE_MODEL=gpt-image-2-medium

Live-verified end-to-end with the low tier: 18.8s landscape render of a
golden retriever in wildflowers, vision-confirmed exact match.

* feat(tools_config): plugin image_gen providers inject themselves into picker

'hermes tools' → Image Generation now shows plugin-registered backends
alongside Nous Subscription and FAL.ai without tools_config.py needing
to know about them. OpenAI appears as a third option today; future
backends appear automatically as they're added.

Mechanism:
- ImageGenProvider gains an optional get_setup_schema() hook
  (name, badge, tag, env_vars). Default derived from display_name.
- tools_config._plugin_image_gen_providers() pulls the schemas from
  every registered non-FAL plugin provider.
- _visible_providers() appends those rows when rendering the Image
  Generation category.
- _configure_provider() handles the new image_gen_plugin_name marker:
  writes image_gen.provider and routes to the plugin's list_models()
  catalog for the model picker.
- _toolset_needs_configuration_prompt('image_gen') stops demanding a
  FAL key when any plugin provider reports is_available().

FAL is skipped in the plugin path because it already has hardcoded
TOOL_CATEGORIES rows — when it gets ported to a plugin in a follow-up
PR the hardcoded rows go away and it surfaces through the same path
as OpenAI.

Verified live: picker shows Nous Subscription / FAL.ai / OpenAI.
Picking OpenAI prompts for OPENAI_API_KEY, then shows the
gpt-image-2-low/medium/high model picker sourced from the plugin.

397 tests pass across plugins/, tools_config, registry, and picker.

* fix(image_gen): close final gaps for plugin-backend parity with FAL

Two small places that still hardcoded FAL:

- hermes_cli/setup.py status line: an OpenAI-only setup showed
  'Image Generation: missing FAL_KEY'. Now probes plugin providers
  and reports '(OpenAI)' when one is_available() — or falls back to
  'missing FAL_KEY or OPENAI_API_KEY' if nothing is configured.

- image_generate tool schema description: said 'using FAL.ai, default
  FLUX 2 Klein 9B'. Rewrote provider-neutral — 'backend and model are
  user-configured' — and notes the 'image' field can be a URL or an
  absolute path, which the gateway delivers either way via
  extract_local_files().
2026-04-21 21:30:10 -07:00
..
transports feat: add BedrockTransport + wire all Bedrock transport paths 2026-04-21 20:58:37 -07:00
__init__.py Refactor Terminal and AIAgent cleanup 2026-02-21 22:31:43 -08:00
account_usage.py feat(account-usage): add per-provider account limits module 2026-04-21 01:56:35 -07:00
anthropic_adapter.py fix(kimi): don't send Anthropic thinking to api.kimi.com/coding (#13826) 2026-04-21 21:19:14 -07:00
auxiliary_client.py feat(aux): use Portal /api/nous/recommended-models for auxiliary models 2026-04-21 20:35:16 -07:00
bedrock_adapter.py feat: native AWS Bedrock provider via Converse API 2026-04-15 16:17:17 -07:00
codex_responses_adapter.py refactor: extract codex_responses logic into dedicated adapter 2026-04-20 11:53:17 -07:00
context_compressor.py refactor: remove redundant local imports already available at module level 2026-04-21 00:50:58 -07:00
context_engine.py refactor: remove dead code — 1,784 lines across 77 files (#9180) 2026-04-13 16:32:04 -07:00
context_references.py fix(agent): fall back when rg is blocked for @folder references 2026-04-20 01:56:41 -07:00
copilot_acp_client.py fix(security): apply file safety to copilot acp fs 2026-04-21 01:31:58 -07:00
credential_pool.py fix(auth): unify credential source removal — every source sticks (#13427) 2026-04-21 01:52:49 -07:00
credential_sources.py fix(auth): unify credential source removal — every source sticks (#13427) 2026-04-21 01:52:49 -07:00
display.py fix(display): render <missing old_text> in memory previews instead of empty quotes (#12852) 2026-04-19 22:45:47 -07:00
error_classifier.py fix(error_classifier): handle dict-typed message fields without crashing 2026-04-20 02:40:20 -07:00
file_safety.py fix(security): apply file safety to copilot acp fs 2026-04-21 01:31:58 -07:00
gemini_cloudcode_adapter.py refactor: remove redundant local imports already available at module level 2026-04-21 00:50:58 -07:00
gemini_native_adapter.py refactor: remove redundant local imports already available at module level 2026-04-21 00:50:58 -07:00
gemini_schema.py fix(gemini): sanitize tool schemas for Google providers 2026-04-20 00:26:18 -07:00
google_code_assist.py fix(gemini-cli): surface MODEL_CAPACITY_EXHAUSTED cleanly + drop retired gemma-4-26b (#11833) 2026-04-17 15:34:12 -07:00
google_oauth.py feat(gemini): add Google Gemini CLI OAuth provider via Cloud Code Assist (free + paid tiers) (#11270) 2026-04-16 16:49:00 -07:00
image_gen_provider.py feat(plugins): pluggable image_gen backends + OpenAI provider (#13799) 2026-04-21 21:30:10 -07:00
image_gen_registry.py feat(plugins): pluggable image_gen backends + OpenAI provider (#13799) 2026-04-21 21:30:10 -07:00
insights.py Merge branch 'main' into feat/dashboard-skill-analytics 2026-04-20 05:25:49 -07:00
manual_compression_feedback.py fix(gateway): make manual compression feedback truthful 2026-04-10 21:16:53 -07:00
memory_manager.py feat(honcho): context injection overhaul, 5-tool surface, cost safety, session isolation (#10619) 2026-04-15 19:12:19 -07:00
memory_provider.py refactor(memory): drop on_session_reset — commit-only is enough 2026-04-15 11:28:45 -07:00
model_metadata.py test: stop testing mutable data — convert change-detectors to invariants (#13363) 2026-04-20 23:20:33 -07:00
models_dev.py fix(gemini): hide stale and low-TPM Google models 2026-04-18 12:52:01 -07:00
nous_rate_guard.py fix: Nous Portal rate limit guard — prevent retry amplification (#10568) 2026-04-15 16:31:48 -07:00
prompt_builder.py fix(prompt): tell CLI agents not to emit MEDIA:/path tags (#13766) 2026-04-21 19:36:05 -07:00
prompt_caching.py fix(prompt-caching): skip top-level cache_control on role:tool for OpenRouter 2026-03-21 16:54:43 -07:00
rate_limit_tracker.py refactor: remove dead code — 1,784 lines across 77 files (#9180) 2026-04-13 16:32:04 -07:00
redact.py feat: replace kimi-k2.5 with kimi-k2.6 on OpenRouter and Nous Portal (#13148) 2026-04-20 11:49:54 -07:00
retry_utils.py feat(agent): add jittered retry backoff 2026-04-08 00:41:36 -07:00
shell_hooks.py feat: shell hooks — wire shell scripts as Hermes hook callbacks 2026-04-20 20:53:51 -07:00
skill_commands.py feat(skills+terminal): make bundled skill scripts runnable out of the box (#13384) 2026-04-21 00:39:19 -07:00
skill_utils.py feat(plugins): namespaced skill registration for plugin skill bundles 2026-04-14 10:42:58 -07:00
subdirectory_hints.py fix(agent): catch PermissionError in subdirectory hint discovery 2026-04-09 03:10:30 -07:00
title_generator.py fix: title_generator no longer logs as 'compression' task 2026-04-12 04:17:18 -07:00
trajectory.py Refactor Terminal and AIAgent cleanup 2026-02-21 22:31:43 -08:00
usage_pricing.py fix: sweep remaining provider-URL substring checks across codebase 2026-04-20 22:14:29 -07:00