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Yueli-Dex，choice-shaped-use-cases
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CommunityJev Integrations & Adapters
Yueli-Dex
A Choice-only decision framework around Jev: a local rule engine answers reject, short-circuit, route and constrain cases with no remote call, and only misses reach a Choice request on TypeSafe, Cloudflare, Vercel or a self-hosted host.
- Stars
- 0
- Language
- TypeScript
- License
- MIT
- Published by
- Community
- Author
- haxitag
- Last verified
- Oct 2026
About this project
Yueli DEX (@haxitag/yueli-dex) is a Choice-only decision framework for AI agents. It preserves Jev's standard Choice request and response contract while adding local rules, installable decision-modeling templates, optional LLM-assisted modeling, and reliable routing across TypeSafe, Cloudflare, Vercel, and compatible self-hosted hosts.
Quoted from the project's README. Read the full README.
Used inJev for Software & DevTools
- Languages
- TypeScript
Highlights
- Local rules run first: reject blocks, short-circuit returns a synthetic rules model, route forces a policy, constrain narrows fallbacks — zero remote calls.
- Choice only in v1: standard state, model and questions in; model, answers, choice, confidence and probabilities out. No Score, no Noul, no generated text.
- Responses map to an ActionIntent that is a request, not authorization; DEX never executes business actions, tool calls or repository code.
- Routing weighs explicit policy, configured budget, observed latency, health, retries, a circuit breaker and fallbacks.
Watch out
v1 is Choice only, so a workflow that needs Score or Noul is out of scope, and the packages are implemented and tested but not yet published to npm, so you build from source. The four provider adapters handle transport and authentication only. The 16 templates are a designer's starting point rather than evidence that those decisions hold in your domain, and the open-world templates, content moderation and browser operation, deliberately carry no local rules and therefore always cost a remote call. Local short-circuits return an honest synthetic model name, so any downstream code that branches on the model field has to handle that case. Copy reviewed against the repository README on 2026-10-04, not from running it.
Questions about this entry
Short answers drawn from the linked project or page.
Because a lot of routing decisions are rule-able, and the framework treats those locally with zero remote calls: reject intercepts outright, shortCircuit returns a synthetic response labelled as the rules engine so nothing pretends a model answered, route forces traffic to a chosen policy, and constrain tightens fallback options or the allowed action kinds. Only a miss falls through to a template-compiled Choice request against a remote host. Open-world templates such as content moderation and browser operation deliberately ship without local rules and must go remote.
Build from source for now. The README states the core TypeScript packages are implemented and tested, 159 tests across 11 test files covering the SDK, plugin contracts, four provider adapters, the labelled base template pack with its local rule sets, the CLI and an interactive playground, but that npm publication is pending. The scope is Choice only, with Score, Noul and generic generated text explicitly out of v1.
Only decide. Responses are validated and mapped to an ActionIntent sidecar, and the README is careful that this is a request rather than an authorization: DEX does not execute business actions, tool calls or repository code, and the executing party remains responsible for permissions. Template-level rule sets include things like locally rejecting dangerous commands in production environments and escalating when a loop cap is hit.
Routing considers explicit policy, configured budget, observed latency, health, retries, circuit breaking and fallback. The example configuration sets a maximum of 2 attempts with a circuit breaker that trips at 3 failures and a 60-second cooldown. The CLI can validate configurations, probe providers and run fixtures, and the playground adds a Choice debugger with routing and receipt audit plus separate provider and rule testers.
16 yueli-dex-template/v1 scenario templates, each carrying meta tags across four dimensions (topic, scenario, use case, utility), an ecosystem evidence reference, example input, and a local rule set where the decision is rule-able. The first 10 are general scenarios; the last 6 come from six decision patterns abstracted out of 20 real Jev projects including Winnow, jev-mcp, typesafe-mario, Blink and killmyidea.
An agent skill at skills/yueli-dex/ with a SKILL.md entry point and six references loaded on demand: the Choice contract, the four-dimension template catalog, question design, providers and routing, plugin architecture, and a bilingual agent integration guide. The stated gap it fills is multi-host onboarding: the official TypeSafe skill only teaches its own API, while this one covers four hosts plus modeling and the plugin architecture.
MIT. The packages build from source because npm publication is still pending, so a consuming project pulls it from the repository rather than installing it, and the template pack is imported alongside the core package. Publishing readiness for the skill is described as done, separate from the packages themselves.
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