Class: Clacky::AgentConfig

Inherits:
Object
  • Object
show all
Defined in:
lib/clacky/agent_config.rb

Constant Summary collapse

CONFIG_DIR = 
File.join(Dir.home, ".clacky")
CONFIG_FILE = 
File.join(CONFIG_DIR, "config.yml")
CLAUDE_DEFAULT_MODEL =

Default model for ClaudeCode environment

"claude-sonnet-4-5"
PERMISSION_MODES = 
[:auto_approve, :confirm_safes, :confirm_all].freeze
RUNTIME_ONLY_FIELDS =

Convert to YAML format (top-level array) Auto-injected lite models (auto_injected: true) are excluded from persistence —they are regenerated at load time from the provider preset. Runtime-only fields (id, auto_injected) are stripped before writing so config.yml remains backward compatible with users on older versions.

%w[id auto_injected].freeze
CONFIG_SETTINGS_KEYS =

Settings keys that are persisted to config.yml. These map directly to AgentConfig accessors.

%w[
  enable_compression enable_prompt_caching memory_update_enabled
  skill_evolution max_running_agents max_idle_agents
  default_working_dir
].freeze
FALLBACK_COOLING_OFF_SECONDS =

How long to stay on the fallback model before probing the primary again.

30 * 60

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ AgentConfig

Returns a new instance of AgentConfig.



161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
 
# File 'lib/clacky/agent_config.rb', line 161

def initialize(options = {})
  @permission_mode = validate_permission_mode(options[:permission_mode])
  @max_tokens = options[:max_tokens] || 16384
  @verbose = options[:verbose] || false
  @enable_compression = options[:enable_compression].nil? ? true : options[:enable_compression]
  # Enable prompt caching by default for cost savings
  @enable_prompt_caching = options[:enable_prompt_caching].nil? ? true : options[:enable_prompt_caching]

  # Models configuration
  @models = options[:models] || []
  # Ensure every model has a stable runtime id — this is the single
  # invariant the rest of the system relies on. Regardless of how the
  # config was built (load from yml, direct .new in tests, add_model,
  # api_save_config), every model in @models will have an id.
  @models.each { |m| m["id"] ||= SecureRandom.uuid }

  @current_model_index = options[:current_model_index] || 0
  # Stable runtime id for the currently-selected model. Preferred over
  # @current_model_index because ids are immune to list reordering,
  # additions, and edits to model fields. Ids are injected at load time
  # and never persisted to config.yml (backward compatible with old files).
  # If caller didn't specify current_model_id, prefer the model marked
  # as `type: default` (the documented convention), falling back to
  # models[current_model_index] only if no default marker exists.
  @current_model_id = options[:current_model_id] ||
                      (@models.find { |m| m["type"] == "default" } || @models[@current_model_index])&.dig("id")

  # Memory and skill evolution configuration
  @memory_update_enabled = options[:memory_update_enabled].nil? ? true : options[:memory_update_enabled]
  @skill_evolution = options[:skill_evolution] || {
    enabled: true,
    auto_create_threshold: 12,
    reflection_mode: "llm_analysis"
  }
  # Deep-symbolize keys — YAML-loaded hashes come with string keys,
  # but the rest of the codebase accesses with symbols.
  @skill_evolution = @skill_evolution.transform_keys(&:to_sym)
  @skill_evolution.transform_values! { |v| v.is_a?(Hash) ? v.transform_keys(&:to_sym) : v }

  @max_running_agents = options[:max_running_agents] || 10
  @max_idle_agents = options[:max_idle_agents] || 10

  @default_working_dir = options[:default_working_dir] || ENV["CLACKY_WORKSPACE_DIR"]

  # Per-session virtual model overlay.
  # When set, #current_model returns a *merged* hash (the resolved @models
  # entry merged with this overlay) without mutating the shared @models
  # array. Used by fork_subagent's virtual-lite path so a forked subagent
  # can run on different credentials (e.g. Haiku instead of Opus) without
  # polluting the parent agent's shared @models hashes.
  # Keys honored: "api_key", "base_url", "model", "anthropic_format".
  # @return [Hash, nil]
  @virtual_model_overlay = options[:virtual_model_overlay]

  # Per-session sub-model override. Persists across restarts via the
  # session file. Independent of @virtual_model_overlay (which is for
  # short-lived subagent forks). Used by the WebUI sub-model switcher
  # to pin a session to e.g. "dsk-deepseek-v4-pro" while the underlying
  # card still says "abs-claude-sonnet-4-6". Only the "model" key is
  # honored — sub-model switching never changes credentials.
  @session_model_overlay = options[:session_model_overlay]
end

Instance Attribute Details

#current_model_id ⇒ Object

Returns the value of attribute current_model_id.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def current_model_id
  @current_model_id
end

#current_model_index ⇒ Object

Returns the value of attribute current_model_index.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def current_model_index
  @current_model_index
end

#default_working_dir ⇒ Object

Returns the value of attribute default_working_dir.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def default_working_dir
  @default_working_dir
end

#enable_compression ⇒ Object

Returns the value of attribute enable_compression.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def enable_compression
  @enable_compression
end

#enable_prompt_caching ⇒ Object

Returns the value of attribute enable_prompt_caching.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def enable_prompt_caching
  @enable_prompt_caching
end

#max_idle_agents ⇒ Object

Returns the value of attribute max_idle_agents.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def max_idle_agents
  @max_idle_agents
end

#max_running_agents ⇒ Object

Returns the value of attribute max_running_agents.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def max_running_agents
  @max_running_agents
end

#max_tokens ⇒ Object

Returns the value of attribute max_tokens.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def max_tokens
  @max_tokens
end

#memory_update_enabled ⇒ Object

Returns the value of attribute memory_update_enabled.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def memory_update_enabled
  @memory_update_enabled
end

#models ⇒ Object

Returns the value of attribute models.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def models
  @models
end

#permission_mode ⇒ Object

Returns the value of attribute permission_mode.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def permission_mode
  @permission_mode
end

#skill_evolution ⇒ Object

Returns the value of attribute skill_evolution.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def skill_evolution
  @skill_evolution
end

#verbose ⇒ Object

Returns the value of attribute verbose.



154
155
156
 
# File 'lib/clacky/agent_config.rb', line 154

def verbose
  @verbose
end

Class Method Details

.load(config_file = CONFIG_FILE) ⇒ Object

Load configuration from file



225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
 
# File 'lib/clacky/agent_config.rb', line 225

def self.load(config_file = CONFIG_FILE)
  # Load from config file first
  if File.exist?(config_file)
    data = YAML.load_file(config_file)
  else
    data = nil
  end

  # Extract settings from hash-format config (new format).
  # Old flat-array configs have no settings section — all defaults.
  loaded_settings = {}
  if data.is_a?(Hash) && data["settings"].is_a?(Hash)
    loaded_settings = data["settings"]
  end

  # Parse models from config
  models = parse_models(data)

  # Priority: config file > CLACKY_XXX env vars > ClaudeCode env vars
  if models.empty?
    # Try CLACKY_XXX environment variables first
    if ClackyEnv.default_configured?
      models << ClackyEnv.default_model_config
    # ClaudeCode (Anthropic) environment variable support is disabled
    # elsif ClaudeCodeEnv.configured?
    #   models << {
    #     "type" => "default",
    #     "api_key" => ClaudeCodeEnv.api_key,
    #     "base_url" => ClaudeCodeEnv.base_url,
    #     "model" => CLAUDE_DEFAULT_MODEL,
    #     "anthropic_format" => true
    #   }
    end

    # Add CLACKY_LITE_XXX if configured (only when loading from env)
    if ClackyEnv.lite_configured?
      models << ClackyEnv.lite_model_config
    end
  else
    # Config file exists, but check if we need to add env-based models
    # Only add if no model with that type exists
    has_default = models.any? { |m| m["type"] == "default" }
    has_lite = models.any? { |m| m["type"] == "lite" }

    # Add CLACKY default if not in config and env is set
    if !has_default && ClackyEnv.default_configured?
      models << ClackyEnv.default_model_config
    end

    # Add CLACKY lite if not in config and env is set
    if !has_lite && ClackyEnv.lite_configured?
      models << ClackyEnv.lite_model_config
    end

    # Ensure at least one model has type: default
    # If no model has type: default, assign it to the first model
    unless models.any? { |m| m["type"] == "default" }
      models.first["type"] = "default" if models.any?
    end
  end

  # Auto-inject lite model from provider preset is **no longer materialized
  # into @models**. Lite is now a virtual, on-demand view derived from the
  # currently-selected primary model — see `#lite_model_config_for_current`.
  # This keeps @models a clean "list of user-facing models" and lets the
  # lite companion track the current model at runtime, rather than being
  # frozen at load time to whichever model happened to be the default.
  #
  # Legacy note: prior versions injected an entry here with
  # `auto_injected: true`. That flag is still honored in to_yaml for
  # safety (never persisted), but new injections never happen.

  # Ensure every model has a stable runtime id — covers env-injected
  # models (CLACKY_XXX, CLAUDE_XXX) that don't go through parse_models.
  # Ids are NOT persisted to config.yml (see to_yaml).
  models.each { |m| m["id"] ||= SecureRandom.uuid }

  # Find the index of the model marked as "default" (type: default)
  # Fall back to 0 if no model has type: default
  default_index = models.find_index { |m| m["type"] == "default" } || 0
  default_id = models[default_index] && models[default_index]["id"]

  # Build constructor args from loaded settings (new hash-format config)
  # plus the parsed models. Only pass settings that have explicit values;
  # omitted keys get their default from AgentConfig#initialize.
  constructor_args = {
    models: models,
    current_model_index: default_index,
    current_model_id: default_id
  }
  CONFIG_SETTINGS_KEYS.each do |key|
    if loaded_settings.key?(key)
      constructor_args[key.to_sym] = loaded_settings[key]
    end
  end

  instance = new(**constructor_args)
  instance.derive_media_models!
  instance
end

Instance Method Details

#activate_fallback!(fallback_model_name) ⇒ Object

Switch to fallback model and start the cooling-off clock. Idempotent — calling again while already in :fallback_active renews the timestamp.

Parameters:

  • fallback_model_name (String) —

    the fallback model to use



795
796
797
798
799
 
# File 'lib/clacky/agent_config.rb', line 795

def activate_fallback!(fallback_model_name)
  @fallback_state = :fallback_active
  @fallback_since = Time.now
  @fallback_model  = fallback_model_name
end

#add_model(model:, api_key:, base_url:, anthropic_format: false, type: nil) ⇒ Object

Add a new model configuration



579
580
581
582
583
584
585
586
587
588
 
# File 'lib/clacky/agent_config.rb', line 579

def add_model(model:, api_key:, base_url:, anthropic_format: false, type: nil)
  @models << {
    "id" => SecureRandom.uuid,
    "api_key" => api_key,
    "base_url" => base_url,
    "model" => model,
    "anthropic_format" => anthropic_format,
    "type" => type
  }.compact
end

#anthropic_format? ⇒ Boolean

Check if should use Anthropic format for current model

Returns:

  • (Boolean) 


569
570
571
 
# File 'lib/clacky/agent_config.rb', line 569

def anthropic_format?
  current_model&.dig("anthropic_format") || false
end

#api_key ⇒ Object

Get API key for current model



522
523
524
 
# File 'lib/clacky/agent_config.rb', line 522

def api_key
  current_model&.dig("api_key")
end

#api_key=(value) ⇒ Object

Set API key for current model. When a virtual overlay is active, writes into the overlay (not the shared @models hash) to keep session-level isolation.



529
530
531
532
533
534
535
536
 
# File 'lib/clacky/agent_config.rb', line 529

def api_key=(value)
  return unless resolve_current_model_entry
  if @virtual_model_overlay
    @virtual_model_overlay["api_key"] = value
  else
    resolve_current_model_entry["api_key"] = value
  end
end

#apply_virtual_model_overlay!(overlay) ⇒ void

This method returns an undefined value.

Apply a virtual model overlay for this session (and only this session). The overlay fields are merged on top of the current model entry when #current_model is called, without ever mutating the shared @models array or its hashes.

Used by Agent#fork_subagent when routing a subagent through a virtual lite model (Haiku for Claude family, Flash for DeepSeek, …). Apply on the forked config only — the parent config is untouched.

Parameters:

  • overlay (Hash, nil) —

    fields to overlay; pass nil or {} to clear. Recognized keys: “api_key”, “base_url”, “model”, “anthropic_format”.



913
914
915
916
917
918
919
920
 
# File 'lib/clacky/agent_config.rb', line 913

def apply_virtual_model_overlay!(overlay)
  if overlay.nil? || overlay.empty?
    @virtual_model_overlay = nil
  else
    # Dup so later mutations to the passed-in hash don't leak in.
    @virtual_model_overlay = overlay.dup
  end
end

#base_url ⇒ Object

Get base URL for current model



539
540
541
 
# File 'lib/clacky/agent_config.rb', line 539

def base_url
  current_model&.dig("base_url")
end

#base_url=(value) ⇒ Object

Set base URL for current model (overlay-aware; see #api_key=).



544
545
546
547
548
549
550
551
 
# File 'lib/clacky/agent_config.rb', line 544

def base_url=(value)
  return unless resolve_current_model_entry
  if @virtual_model_overlay
    @virtual_model_overlay["base_url"] = value
  else
    resolve_current_model_entry["base_url"] = value
  end
end

#bedrock? ⇒ Boolean

Check if current model uses Bedrock Converse API (ABSK key prefix or abs- model prefix)

Returns:

  • (Boolean) 


574
575
576
 
# File 'lib/clacky/agent_config.rb', line 574

def bedrock?
  Clacky::MessageFormat::Bedrock.bedrock_api_key?(api_key.to_s, model_name.to_s)
end

#confirm_fallback_ok! ⇒ Object

Called when a successful API response is received. If we were :probing (testing primary after cooling-off), this confirms the primary model is healthy again and resets everything. No-op in :primary_ok or :fallback_active states.



816
817
818
819
820
821
822
 
# File 'lib/clacky/agent_config.rb', line 816

def confirm_fallback_ok!
  return unless @fallback_state == :probing

  @fallback_state = nil
  @fallback_since = nil
  @fallback_model = nil
end

#current_model ⇒ Object

Get current model configuration.

Resolution order:

1. @current_model_id (primary source of truth — stable across list edits)
2. type: default (for config.yml that sets a default explicitly)
3. @current_model_index (back-compat for very old code paths)



855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
 
# File 'lib/clacky/agent_config.rb', line 855

def current_model
  return nil if @models.empty?

  resolved = resolve_current_model_entry
  return nil unless resolved

  # Merge order (low → high): base entry, session-level sub-model override,
  # then short-lived subagent overlay. Both layers are kept separate so
  # a subagent fork can stack its own credentials on top of an active
  # sub-model pin without erasing it.
  merged = resolved
  if @session_model_overlay && !@session_model_overlay.empty?
    merged = merged.merge(@session_model_overlay)
  end
  if @virtual_model_overlay && !@virtual_model_overlay.empty?
    merged = merged.merge(@virtual_model_overlay)
  end
  merged.equal?(resolved) ? resolved : merged
end

#current_model_supports?(capability) ⇒ Boolean

Query whether the current model supports a given capability.

This is the single entry-point callers (Agent, downgrade pipeline, UI) should use instead of poking Providers directly. Benefits:

- Always reflects the current model — switching with `/model` takes
  effect immediately, no caching, no stale warnings.
- Handles the "custom base_url / unknown provider" case with a
  conservative default (assume supported), so self-hosted or new
  providers don't get accidentally downgraded.

Parameters:

  • capability (String, Symbol) —

    capability name (e.g. :vision)

Returns:

  • (Boolean) —

    true if supported (or unknown); false only when the preset explicitly declares the capability as unsupported.



970
971
972
973
974
975
976
977
978
979
980
981
 
# File 'lib/clacky/agent_config.rb', line 970

def current_model_supports?(capability)
  m = current_model
  # No model configured yet → nothing to judge; assume supported so we
  # don't preemptively downgrade before a model is even picked.
  return true unless m && m["base_url"]

  provider_id = Clacky::Providers.find_by_base_url(m["base_url"])
  # Custom / self-hosted base_url not in our preset list → be conservative.
  return true unless provider_id

  Clacky::Providers.supports?(provider_id, capability, model_name: m["model"])
end

#deep_copy ⇒ Object

Create a per-session copy of this config.

Plan B (shared models): we deliberately share the SAME @models array reference with all sessions (no deep clone). This is the key design decision that keeps session and global views in sync:

- User adds a model in Settings → every live session sees it instantly.
- User edits api_key/base_url → every live session's next API call
  picks up the new credentials (via current_model lookup).
- Model ids are stable across edits, so each session's
  @current_model_id continues to resolve correctly.

Per-session state that MUST stay isolated (permission_mode, @current_model_id, @current_model_index, fallback state) are scalar copies via ‘dup` and don’t leak between sessions.

Before Plan B, sessions held deep-copied @models — which silently diverged from the global list any time the user added/edited a model in Settings, producing bugs like “Failed to switch model” for newly added models on Windows and Linux. See http_server.rb#api_switch_session_model and http_server.rb#api_save_config for the companion logic.



356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
 
# File 'lib/clacky/agent_config.rb', line 356

def deep_copy
  # dup gives us a new AgentConfig with independent scalar ivars but
  # the same @models reference — exactly what we want.
  copy = dup
  # But @virtual_model_overlay must be independent: a forked subagent
  # setting/clearing its own overlay must NOT leak into the parent.
  # (dup copies the ivar reference; an unset overlay is nil which is
  # already independent, but an active overlay must be cloned.)
  if @virtual_model_overlay
    copy.instance_variable_set(:@virtual_model_overlay, @virtual_model_overlay.dup)
  end
  if @session_model_overlay
    copy.instance_variable_set(:@session_model_overlay, @session_model_overlay.dup)
  end
  copy
end

#default_model ⇒ Object

Get the default model (type: default) Falls back to current_model for backward compatibility



695
696
697
 
# File 'lib/clacky/agent_config.rb', line 695

def default_model
  find_model_by_type("default") || current_model
end

#derive_media_models! ⇒ Object

Kept as a no-op for backward compatibility. Media auto entries are now derived virtually on read; nothing is materialized into @models.



630
631
632
 
# File 'lib/clacky/agent_config.rb', line 630

def derive_media_models!
  @models.reject! { |m| m["auto_injected"] && Clacky::Providers::MEDIA_KINDS.include?(m["type"].to_s) }
end

#effective_model_name ⇒ Object

The effective model name to use for API calls.

  • :primary_ok / nil → configured model_name (primary)

  • :fallback_active → fallback model

  • :probing → configured model_name (trying primary silently)



839
840
841
842
843
844
845
846
847
 
# File 'lib/clacky/agent_config.rb', line 839

def effective_model_name
  case @fallback_state
  when :fallback_active
    @fallback_model || model_name
  else
    # :primary_ok (nil) and :probing both use the primary model
    model_name
  end
end

#fallback_active? ⇒ Boolean

Returns true when a fallback model is currently being used (:fallback_active or :probing states).

Returns:

  • (Boolean) 


826
827
828
 
# File 'lib/clacky/agent_config.rb', line 826

def fallback_active?
  @fallback_state == :fallback_active || @fallback_state == :probing
end

#fallback_model_for(model_name) ⇒ String?

Look up the fallback model name for the given model name. Uses the provider preset’s fallback_models table. Returns nil if no fallback is configured for this model.

Parameters:

  • model_name (String) —

    the primary model name (e.g. “abs-claude-sonnet-4-6”)

Returns:

  • (String, nil) 


779
780
781
782
783
784
785
786
787
788
789
790
 
# File 'lib/clacky/agent_config.rb', line 779

def fallback_model_for(model_name)
  m = current_model
  return nil unless m

  provider_id = Clacky::Providers.resolve_provider(
    base_url: m["base_url"],
    api_key:  m["api_key"]
  )
  return nil unless provider_id

  Clacky::Providers.fallback_model(provider_id, model_name)
end

#find_model_by_name_and_url(model_name, base_url = nil) ⇒ Hash?

Find model by composite key (model name + base_url). Used when restoring a session to match its original model without relying on the runtime-only id (which changes on every process restart). base_url is optional for backward compatibility with sessions saved before base_url was persisted.

Parameters:

  • model_name (String) —

    the model’s “model” field (e.g. “dsk-deepseek-v4-pro”)

  • base_url (String, nil) (defaults to: nil) —

    the model’s “base_url” field

Returns:

  • (Hash, nil) —

    the matching model entry or nil



686
687
688
689
690
691
 
# File 'lib/clacky/agent_config.rb', line 686

def find_model_by_name_and_url(model_name, base_url = nil)
  @models.find do |m|
    m["model"] == model_name &&
      (base_url.nil? || m["base_url"] == base_url)
  end
end

#find_model_by_type(type) ⇒ Object

Find model by type (default or lite or media kind) Returns the model hash or nil if not found. For media kinds (image/video/audio): explicit user-configured (custom) entries win; otherwise an auto-derived virtual entry is returned based on the default model’s provider — mirroring how lite is virtually derived via #lite_model_config_for_current.



596
597
598
599
600
601
602
603
604
 
# File 'lib/clacky/agent_config.rb', line 596

def find_model_by_type(type)
  kind = type.to_s
  if Clacky::Providers::MEDIA_KINDS.include?(kind)
    custom = @models.find { |m| m["type"] == kind }
    return custom if custom
    return derive_media_model(kind)
  end
  @models.find { |m| m["type"] == type }
end

#get_model(index) ⇒ Object

Get model by index



424
425
426
 
# File 'lib/clacky/agent_config.rb', line 424

def get_model(index)
  @models[index]
end

#lite_model ⇒ Object

Explicit lite model entry (type: “lite”) — only present when the user configured ‘CLACKY_LITE_*` environment variables. Returns nil otherwise.

This is the “user override” path. The preferred way for subagents to obtain a lite model is ‘#lite_model_config_for_current`, which falls back to this method when an explicit lite exists.



705
706
707
 
# File 'lib/clacky/agent_config.rb', line 705

def lite_model
  find_model_by_type("lite")
end

#lite_model_config_for_current ⇒ Hash?

Return a complete lite model config hash for the currently-active primary model, or nil if none is available.

Resolution order:

1. Explicit user-configured lite (type: "lite", from CLACKY_LITE_*
   env vars). Wins over provider presets so power users retain full
   control.
2. Provider preset: look up the current model's provider, consult its
   per-family `lite_models` table (e.g. openclacky: Claude → Haiku,
   DeepSeek V4-pro → DeepSeek V4-flash). If matched, return a virtual
   hash that reuses the current model's api_key / base_url — only
   the model name (and anthropic_format, if provider-specific) differ.
3. nil — either the provider has no lite mapping for this primary
   (e.g. the current model is already lite-class like Haiku), or the
   provider is unknown. Callers should treat this as "no lite
   available; use the primary as-is".

The returned hash is not added to @models. It’s consumed directly by ‘Agent#fork_subagent(model: “lite”)`, which applies the fields to the forked config. This means:

- Switching the primary model automatically changes which lite is
  used, with zero additional bookkeeping.
- @models stays a clean list of user-facing models (no phantom
  auto-injected entries cluttering the model picker in the UI).

Returns:

  • (Hash, nil) —

    a hash with keys api_key, base_url, model, anthropic_format, plus an “id” of the form “lite:<primary_id>” for logging/debugging; nil if no lite is resolvable.



737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
 
# File 'lib/clacky/agent_config.rb', line 737

def lite_model_config_for_current
  # 1) Explicit user-configured lite wins
  explicit = find_model_by_type("lite")
  return explicit if explicit

  # 2) Provider preset derivation
  primary = current_model
  return nil unless primary && primary["base_url"] && primary["model"]

  # Use resolve_provider (base_url first, then clacky-* api_key fallback
  # for local-debug / self-hosted proxies).
  provider_id = Clacky::Providers.resolve_provider(
    base_url: primary["base_url"],
    api_key:  primary["api_key"]
  )
  return nil unless provider_id

  lite_name = Clacky::Providers.lite_model(provider_id, primary["model"])
  return nil unless lite_name

  # If the current primary IS already a lite-class model, skip.
  return nil if lite_name == primary["model"]

  {
    "id"               => "lite:#{primary["id"]}",
    "type"             => "lite",
    "api_key"          => primary["api_key"],
    "base_url"         => primary["base_url"],
    "model"            => lite_name,
    "anthropic_format" => primary["anthropic_format"] || false,
    "virtual"          => true  # marker: not a real @models entry
  }
end

#maybe_start_probing ⇒ Object

Called at the start of every call_llm. If cooling-off has expired, transition from :fallback_active → :probing so the next request will silently test the primary model. No-op in any other state.



805
806
807
808
809
810
 
# File 'lib/clacky/agent_config.rb', line 805

def maybe_start_probing
  return unless @fallback_state == :fallback_active
  return unless @fallback_since && (Time.now - @fallback_since) >= FALLBACK_COOLING_OFF_SECONDS

  @fallback_state = :probing
end

#media_state(kind) ⇒ Hash{String=>Object}

Returns the configured/derived media model entry for ‘kind`, plus a hint about its source. UI uses this to render the tri-state control.

Parameters:

  • kind (String) —

    one of “image” / “video” / “audio”

Returns:

  • (Hash{String=>Object}) —

    keys: “configured” [Boolean] — anything available? “source” [String] — “off” | “auto” | “custom” “model” [String, nil] “base_url” [String, nil] “provider” [String, nil] — provider id “available” [Array<String>] — auto-source candidates from preset



644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
 
# File 'lib/clacky/agent_config.rb', line 644

def media_state(kind)
  kind = kind.to_s
  custom = @models.find { |m| m["type"] == kind }
  auto   = custom ? nil : derive_media_model(kind)
  entry  = custom || auto

  provider_id = if entry
                  Clacky::Providers.resolve_provider(
                    base_url: entry["base_url"],
                    api_key:  entry["api_key"]
                  )
                end

  available_provider_id = if custom
                            provider_id
                          else
                            default = find_model_by_type("default")
                            default && Clacky::Providers.resolve_provider(
                              base_url: default["base_url"],
                              api_key:  default["api_key"]
                            )
                          end
  available = available_provider_id ? Clacky::Providers.media_models(available_provider_id, kind) : []

  {
    "configured" => !entry.nil?,
    "source"     => custom ? "custom" : (auto ? "auto" : "off"),
    "model"      => entry && entry["model"],
    "base_url"   => entry && entry["base_url"],
    "provider"   => provider_id,
    "available"  => available
  }
end

#model_name ⇒ Object

Get model name for current model



554
555
556
 
# File 'lib/clacky/agent_config.rb', line 554

def model_name
  current_model&.dig("model")
end

#model_name=(value) ⇒ Object

Set model name for current model (overlay-aware; see #api_key=).



559
560
561
562
563
564
565
566
 
# File 'lib/clacky/agent_config.rb', line 559

def model_name=(value)
  return unless resolve_current_model_entry
  if @virtual_model_overlay
    @virtual_model_overlay["model"] = value
  else
    resolve_current_model_entry["model"] = value
  end
end

#model_names ⇒ Object

List all model names



517
518
519
 
# File 'lib/clacky/agent_config.rb', line 517

def model_names
  @models.map { |m| m["model"] }
end

#models_configured? ⇒ Boolean

Check if any model is configured

Returns:

  • (Boolean) 


415
416
417
 
# File 'lib/clacky/agent_config.rb', line 415

def models_configured?
  !@models.empty? && !current_model.nil?
end

#probing? ⇒ Boolean

Returns true only when we are silently probing the primary model.

Returns:

  • (Boolean) 


831
832
833
 
# File 'lib/clacky/agent_config.rb', line 831

def probing?
  @fallback_state == :probing
end

#remove_model(index) ⇒ Object

Remove a model by index Returns true if removed, false if index out of range or it’s the last model



1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
 
# File 'lib/clacky/agent_config.rb', line 1010

def remove_model(index)
  # Don't allow removing the last model
  return false if @models.length <= 1
  return false if index < 0 || index >= @models.length

  removed = @models.delete_at(index)

  # Adjust current_model_index if necessary
  if @current_model_index >= @models.length
    @current_model_index = @models.length - 1
  end

  # If the removed model was the current one, clear @current_model_id.
  # current_model will then fall back to type: default / current_model_index.
  if removed && @current_model_id == removed["id"]
    @current_model_id = nil
  end

  true
end

#save(config_file = CONFIG_FILE) ⇒ Object 



373
374
375
376
377
378
 
# File 'lib/clacky/agent_config.rb', line 373

def save(config_file = CONFIG_FILE)
  config_dir = File.dirname(config_file)
  FileUtils.mkdir_p(config_dir)
  File.write(config_file, to_yaml)
  FileUtils.chmod(0o600, config_file)
end

#session_model_overlay ⇒ Hash?

Returns the active session sub-model overlay.

Returns:

  • (Hash, nil) —

    the active session sub-model overlay



945
946
947
 
# File 'lib/clacky/agent_config.rb', line 945

def session_model_overlay
  @session_model_overlay
end

#session_model_overlay=(model_name) ⇒ Object

Apply a session-level sub-model override. Lives on this AgentConfig only (each session deep_copy’s its own scalar ivar) and survives a restart through the session file. Pass nil or “” to clear.

The override only rewrites the resolved current_model’s “model” field —api_key / base_url / anthropic_format come from the underlying card, so the user’s credentials and provider identity are untouched.

Parameters:

  • model_name (String, nil) —

    sub-model name, e.g. “dsk-deepseek-v4-pro”



936
937
938
939
940
941
942
 
# File 'lib/clacky/agent_config.rb', line 936

def session_model_overlay=(model_name)
  if model_name.nil? || model_name.to_s.strip.empty?
    @session_model_overlay = nil
  else
    @session_model_overlay = { "model" => model_name.to_s.strip }
  end
end

#session_model_overlay_name ⇒ String?

Convenience accessor: the sub-model name currently pinned on this session, or nil when no override is active. Used by serializers and the WebUI to surface “card · sub-model” two-line displays.

Returns:

  • (String, nil) 


953
954
955
 
# File 'lib/clacky/agent_config.rb', line 953

def session_model_overlay_name
  @session_model_overlay && @session_model_overlay["model"]
end

#set_default_model_by_id(id) ⇒ Boolean

Set the global default model marker (‘type: “default”`).

This is separate from ‘switch_model_by_id`:

- `switch_model_by_id` only changes this session's current model.
- `set_default_model_by_id` mutates the shared `@models` array by
  moving the `type: "default"` marker to the given model.

Use cases:

- CLI (single-session): when the user picks a model, we both switch
  this session AND update the global default so future CLI launches
  use the same model. Caller must `save` to persist.
- Web UI Settings save flow: also uses this (via payload).

Do NOT call from per-session model switching in multi-session contexts (Web UI session-level switch), since it would leak into other sessions and change what new sessions start with.

Only one model may carry ‘type: “default”` at a time — this method clears the marker on any other model that had it.

Note: if the target model currently has ‘type: “lite”`, this method will overwrite it with `“default”`. That matches the existing single-slot `type` field semantics in the codebase.

Parameters:

  • id (String) —

    the model’s runtime id

Returns:

  • (Boolean) —

    true if marker was moved, false if id not found



499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
 
# File 'lib/clacky/agent_config.rb', line 499

def set_default_model_by_id(id)
  return false if id.nil? || id.to_s.empty?

  target = @models.find { |m| m["id"] == id }
  return false if target.nil?

  # Clear existing default marker(s) — there should only be one, but
  # be defensive in case of corrupted config.
  @models.each do |m|
    next if m["id"] == id
    m.delete("type") if m["type"] == "default"
  end

  target["type"] = "default"
  true
end

#set_model_type(index, type) ⇒ Object

Set a model’s type (default, lite, image, video, or audio). At most one model carries each type at a time. Returns true if successful

Parameters:

  • index (Integer) —

    the model index

  • type (String, nil) —

    type tag, or nil to clear



988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
 
# File 'lib/clacky/agent_config.rb', line 988

def set_model_type(index, type)
  return false if index < 0 || index >= @models.length
  return false unless ["default", "lite", "image", "video", "audio", nil].include?(type)

  if type
    # Remove type from any other model that has it
    @models.each do |m|
      m.delete("type") if m["type"] == type
    end
    
    # Set type on target model
    @models[index]["type"] = type
  else
    # Remove type from target model
    @models[index].delete("type")
  end

  true
end

#switch_model_by_id(id) ⇒ Boolean

Switch the current session to a specific model, identified by its stable runtime id.

This is a per-session operation:

- Updates this AgentConfig's `@current_model_id` (primary truth)
- Updates `@current_model_index` for back-compat observers
- Does NOT mutate the shared `@models` array's `type: "default"`
  marker. The "default model" is a global setting (initial model
  for new sessions) and is only changed via the Settings UI
  "save config" flow (`api_save_config`).

Parameters:

  • id (String) —

    the model’s runtime id (see parse_models)

Returns:

  • (Boolean) —

    true if switched, false if id not found



441
442
443
444
445
446
447
448
449
450
451
452
453
454
 
# File 'lib/clacky/agent_config.rb', line 441

def switch_model_by_id(id)
  return false if id.nil? || id.to_s.empty?

  index = @models.find_index { |m| m["id"] == id }
  return false if index.nil?

  previous_id = @current_model_id
  @current_model_id = id
  @current_model_index = index

  @session_model_overlay = nil if previous_id != id

  true
end

#switch_model_by_name(name) ⇒ Boolean

Switch to a model by its display name (fuzzy match, case-insensitive).

Parameters:

  • name (String) —

    the model name to search for (e.g. “gpt-5.3-codex”)

Returns:

  • (Boolean) —

    true if switched, false if name not found



460
461
462
463
464
465
466
467
468
469
470
471
 
# File 'lib/clacky/agent_config.rb', line 460

def switch_model_by_name(name)
  return false if name.nil? || name.to_s.strip.empty?

  name_str = name.to_s.strip.downcase
  index = @models.find_index { |m| m["model"].to_s.downcase == name_str }
  return false if index.nil?

  @current_model_id = @models[index]["id"]
  @current_model_index = index

  true
end

#to_yaml ⇒ Object

Serialize the current agent configuration to YAML. Outputs a hash with “settings” and “models” keys (new format). Backward compatibility: old flat-array format is still readable by .load.



398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
 
# File 'lib/clacky/agent_config.rb', line 398

def to_yaml
  persistable_models = @models.reject { |m| m["auto_injected"] }.map do |m|
    m.reject { |k, _| RUNTIME_ONLY_FIELDS.include?(k) }
  end
  settings = {
    "enable_compression" => @enable_compression,
    "enable_prompt_caching" => @enable_prompt_caching,
    "memory_update_enabled" => @memory_update_enabled,
    "skill_evolution" => @skill_evolution,
    "max_running_agents" => @max_running_agents,
    "max_idle_agents" => @max_idle_agents,
    "default_working_dir" => @default_working_dir
  }
  YAML.dump("settings" => settings, "models" => persistable_models)
end

#virtual_model_overlay ⇒ Hash?

Returns the active overlay (read-only view; dup before mutating).

Returns:

  • (Hash, nil) —

    the active overlay (read-only view; dup before mutating)



923
924
925
 
# File 'lib/clacky/agent_config.rb', line 923

def virtual_model_overlay
  @virtual_model_overlay
end