Add support for object-style entries in fallback_models arrays, enabling
per-model configuration of variant, reasoningEffort, temperature, top_p,
maxTokens, and thinking settings.
- Zod schema for FallbackModelObject with full validation
- normalizeFallbackModels() and flattenToFallbackModelStrings() utilities
- Provider-agnostic model resolution pipeline with fallback chain
- Session prompt params state management
- Fallback chain construction with prefix-match lookup
- Integration across delegate-task, background-agent, and plugin layers
The test name claimed it exercised RETRYABLE_ERROR_PATTERNS directly,
but classifyErrorType actually matches 'payment required' via the
quota_exceeded path first. Rename to 'detects payment required errors
as retryable' to accurately describe end-to-end behavior.
- error-classifier: pre-compile default retry pattern regex
- think-mode/detector: combine multilingual patterns into single regex
- parser: skip redundant toLowerCase on pre-lowered keywords
- edit-operations: use fast arraysEqual instead of JSON comparison
- hash-computation: optimize streaming line extraction with index tracking
When runtime fallback switches to a different model, the agent's
configured variant and reasoningEffort were lost because
buildRetryModelPayload only extracted variant from the fallback
model string itself.
Now buildRetryModelPayload accepts optional agentSettings and uses
the agent's variant as fallback when the model string doesn't
include one. reasoningEffort is also passed through.
🤖 Generated with assistance of [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The nullish-coalescing chain could stop at a non-numeric value (e.g.
status: "error"), preventing deeper nested numeric statusCode values
from being reached. Switch to Array.find() with a type guard to always
select the first numeric value.
Adds 11 tests for extractStatusCode covering: top-level, nested
(data/error/cause), non-numeric skip, fallback to regex, and
precedence.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
AI SDK wraps HTTP status codes inside error.error.statusCode (e.g., AI_APICallError). The current extractStatusCode only checks the top level, missing these nested codes.
This caused runtime-fallback to skip retryable errors like 400, 500, 504 because it couldn't find the status code.
Fixes#2617
When Gemini returns a quota exhausted error, OpenCode auto-retries and
fires session.status with type='retry'. The extractAutoRetrySignal
function requires BOTH 'retrying in' text AND a quota pattern to match,
but some providers (like Gemini) include only the error text in the
retry message without the 'retrying in' phrase.
Since status.type='retry' already confirms this is a retry event, the
fix adds a fallback check: if extractAutoRetrySignal fails, check the
message directly against RETRYABLE_ERROR_PATTERNS. This ensures quota
errors like 'exhausted your capacity' trigger the fallback chain even
when the retry message format differs from expected.
Fixes#2454
setInterval for model availability monitoring was never cleared,
keeping the hook alive indefinitely with no dispose mechanism.
- Add dispose() method to RuntimeFallbackHook that clears interval
- Track intervalId in hook state for cleanup
- Export dispose in hook return type
Tests: 3 pass, 10 expects
Align runtime defaults, tests, docs, and generated artifacts with the newer GPT-5.4 baseline. Keep think-mode and prompt-routing expectations consistent after the model version bump.
- runtime-fallback: guard session.error with sessionRetryInFlight to prevent
double-advance during active retry; expand session.stop abort to include
sessionAwaitingFallbackResult; remove premature pendingFallbackModel clearing
from auto-retry finally block
- hashline-edit: add HASHLINE_LEGACY_REF_PATTERN for backward-compatible
LINE:HEX dual-parse in parseLineRef and normalizeLineRef
- tmux-subagent: defer session on null queryWindowState; unconditionally
re-queue deferred session on spawn failure (not just close+spawn)
- ultrawork-db: wrap new Database(dbPath) in try/catch to handle corrupted DB
- event: add try/catch guards around model-fallback logic in message.updated,
session.status, and session.error handlers
Split 1021-line index.ts into 10 focused modules per project conventions.
New structure:
- error-classifier.ts: error analysis with dynamic status code extraction
- agent-resolver.ts: agent detection utilities
- fallback-state.ts: state management and cooldown logic
- fallback-models.ts: model resolution from config
- auto-retry.ts: retry helpers with mutual recursion support
- event-handler.ts: session lifecycle events
- message-update-handler.ts: message.updated event handling
- chat-message-handler.ts: chat message interception
- hook.ts: main factory with proper cleanup
- types.ts: updated with HookDeps interface
- index.ts: 2-line barrel re-export
Embedded fixes:
- Fix setInterval leak with .unref()
- Replace require() with ESM import
- Add log warning on invalid model format
- Update sessionLastAccess on normal traffic
- Make extractStatusCode dynamic from config
- Remove unused SessionErrorInfo type
All 61 tests pass without modification.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Make provider auto-retry signal detection respect timeout_seconds setting:
- When timeout_seconds=0, disable quota-based fallback escalation
- Only treat auto-retry signals as errors when timeout is enabled
- Add test to verify behavior when timeout_seconds is disabled
- Update documentation to explain timeout_seconds=0 behavior
This allows users to disable timeout-based fallbacks while keeping
error-based fallback functionality intact.
Refactor retry signal detection to be provider-agnostic:
- Replace hardcoded Copilot/OpenAI checks with generic pattern matching
- Detect any provider message containing limit/quota keywords + [retrying in X]
- Add OpenAI pattern: 'usage limit has been reached [retrying in X]'
- Update logging to use generic 'provider' instead of specific names
- Add 'usage limit has been reached' to RETRYABLE_ERROR_PATTERNS
This enables fallback escalation for any provider that signals automatic
retries due to quota/rate limits, not just Copilot and OpenAI.
Closes PR discussion: generalize retry pattern detection
- Extract duplicated auto-retry logic (~40 lines each) from session.error and
message.updated handlers into shared autoRetryWithFallback() helper
- Fix userFallbackModels path in model-resolution-pipeline to respect
constraints.connectedProviders parameter instead of reading cache directly,
matching the behavior of categoryDefaultModel and fallbackChain paths
Bug fixes:
1. extractStatusCode: handle nested data.statusCode (Anthropic error structure)
2. Error regex: relax credit.*balance.*too.*low pattern for multi-char gaps
3. Zod schema: bump max_fallback_attempts from 10 to 20 (config rejected silently)
4. getFallbackModelsForSession: fallback to sisyphus/any agent when session.error lacks agent
5. Model detection: derive model from agent config when session.error lacks model info
6. Auto-retry: resend last user message with fallback model via promptAsync
7. Persistent fallback: override model on every chat.message (not just pendingFallbackModel)
8. Manual model change: detect UI model changes and reset fallback state
9. Agent preservation: include agent in promptAsync body to prevent defaulting to sisyphus
Additional:
- Add sessionRetryInFlight guard to prevent double-retries
- Add resolveAgentForSession with 3-tier resolution (event → session memory → session ID)
- Add normalizeAgentName for display names like "Prometheus (Planner)" → "prometheus"
- Add resolveAgentForSessionFromContext to fetch agent from session messages
- Move AGENT_NAMES and agentPattern to module scope for reuse
- Register runtime-fallback hooks in event.ts and chat-message.ts
- Remove diagnostic debug logging from isRetryableError
- Add 400 to default retry_on_errors and credit/balance patterns to RETRYABLE_ERROR_PATTERNS
The \b word boundary regex treats '-' as a boundary, causing
'sisyphus-junior-session-123' to incorrectly match 'sisyphus'
instead of 'sisyphus-junior'.
Sorting agent names by length (descending) ensures longer names
are matched first, fixing the hyphenated agent detection issue.
Fixes cubic-dev-ai review issue #8
- Add normalizeFallbackModels helper to centralize string/array normalization (P3)
- Export RuntimeFallbackConfig and FallbackModels types from config/index.ts
- Fix agent detection regex to use word boundaries for sessionID matching
- Improve tests to verify actual fallback switching logic (not just log paths)
- Add SessionCategoryRegistry cleanup in executeSyncTask on completion/error (P2)
- All 24 runtime-fallback tests pass, 115 delegate-task tests pass
Replace word-boundary regex with stricter patterns that match
status codes only at start/end of string or surrounded by whitespace.
Prevents false matches like '1429' or '4290'.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Implement full fallback_models support across all integration points:
1. Model Resolution Pipeline (src/shared/model-resolution-pipeline.ts)
- Add userFallbackModels to ModelResolutionRequest
- Process user fallback_models before hardcoded fallback chain
- Support both connected provider and availability checking modes
2. Agent Utils (src/agents/utils.ts)
- Update applyModelResolution to accept userFallbackModels
- Inject fallback_models for all builtin agents (sisyphus, oracle, etc.)
- Support both single string and array formats
3. Model Resolver (src/shared/model-resolver.ts)
- Add userFallbackModels to ExtendedModelResolutionInput type
- Pass through to resolveModelPipeline
4. Delegate Task Executor (src/tools/delegate-task/executor.ts)
- Extract category fallback_models configuration
- Pass to model resolution pipeline
- Register session category for runtime-fallback hook
5. Session Category Registry (src/shared/session-category-registry.ts)
- New module: maps sessionID -> category
- Used by runtime-fallback to lookup category fallback_models
- Auto-cleanup support
6. Runtime Fallback Hook (src/hooks/runtime-fallback/index.ts)
- Check SessionCategoryRegistry first for category fallback_models
- Fallback to agent-level configuration
- Import and use SessionCategoryRegistry
Test Results:
- runtime-fallback: 24/24 tests passing
- model-resolver: 46/46 tests passing
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
- Add Category-level fallback_models support in getFallbackModelsForSession()
- Try agent-level fallback_models first
- Then try agent's category fallback_models
- Support all builtin agents including hephaestus, sisyphus-junior, build, plan
- Expand agent name recognition regex to include:
- hephaestus, sisyphus-junior, build, plan, multimodal-looker
- Add comprehensive test coverage (6 new tests, total 24):
- Model switching via chat.message hook
- Agent-level fallback_models configuration
- SessionID agent pattern detection
- Cooldown mechanism validation
- Max attempts limit enforcement
All 24 tests passing
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Add configuration schemas for runtime model fallback feature:
- RuntimeFallbackConfigSchema with enabled, retry_on_errors,
max_fallback_attempts, cooldown_seconds, notify_on_fallback
- FallbackModelsSchema for init-time fallback model selection
- Add fallback_models to AgentOverrideConfigSchema and CategoryConfigSchema
- Export types and schemas from config/index.ts
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
codivedev