feat(openrouter-execution): add OpenRouter execution layer with BYOK and tier-based routing (APR-206)#58
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JacobSampson wants to merge 2 commits into
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feat(openrouter-execution): add OpenRouter execution layer with BYOK and tier-based routing (APR-206)#58JacobSampson wants to merge 2 commits into
JacobSampson wants to merge 2 commits into
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…and tier-based routing (APR-206) Implements @aprovan/openrouter-execution — the execution layer that sits between the model selection engine (APR-205) and the OpenRouter API. - Tier router maps (complexity 1-5, cost_quality_tradeoff 0-10) to FREE / BUDGET / MID_TIER / FRONTIER model tiers - Model catalog defines ordered fallback lists per tier using OpenRouter model IDs; BYOK subscription keys registered in OpenRouter are used automatically - OpenRouterClient wraps the /chat/completions endpoint with provider preferences, per-request budget caps (max_price), and retryable error handling - execute() tries each model in the tier in order, retrying on 429/5xx before falling back to the next model; reports fallback usage in the result - 21 unit tests covering tier routing and executor behavior (fetch is mocked) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
…onfig - Add eslint.config.mjs (ESLint 9 flat config extending @aprovan/eslint-config/base) - Fix lint script to use ESLint 9 glob pattern - Fix import order in executor.ts (alphabetical per import/order rule) - Fix tsconfig to extend @aprovan/tsconfig/node.json (not /package.json) - Add lib: ["ES2022", "DOM"] for fetch/AbortController types - Add @types/node devDependency for process.env access - Add return type to test helper function Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
@aprovan/openrouter-executionpackage — the execution layer between the model selection engine (APR-205) and the OpenRouter APIresolveTier(complexity, costQualityTradeoff)maps the two inputs from the model selection engine to a model tier (FREE → BUDGET → MID_TIER → FRONTIER)execute(request, config?)calls OpenRouter with BYOK-first provider preferences, automatic fallback across models in a tier, per-request budget caps, and retry on 429/5xx errors:free-suffixed model IDs via OpenRouter's free tier; BYOK subscription keys registered in the OpenRouter account are used automatically at no markupArchitecture
src/types.tssrc/model-catalog.tssrc/tier-router.tssrc/openrouter-client.ts/chat/completionswith retryable error classificationsrc/executor.tsexecute()— orchestrates tier resolution, model selection, retries, and fallbackRequired Environment Variable
OPENROUTER_API_KEYOPENROUTER_MAX_BUDGET_USD0.5OPENROUTER_APP_NAMEAprovanLabsX-Titleheader for OpenRouter analyticsTest Plan
pnpm --filter @aprovan/openrouter-execution test— 21 tests across 2 files, all greenpnpm --filter @aprovan/openrouter-execution typecheck— zero type errorspnpm --filter @aprovan/openrouter-execution lint— zero lint errorspnpm --filter @aprovan/openrouter-execution build— ESM + DTS output cleanAcceptance criteria coverage:
OpenRouterClient+execute()providersfield in catalog +provider.orderin each requestcost_quality_tradeoffmapping:resolveTier()— 13 unit testsexecute()withallow_fallbacks: trueModelTier.FREEcatalog + tier routingCloses #APR-206
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