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BlocksTools & Utilities
Jev Search Filter
Jev Search Filter
Filter a closed catalog with one Jev boolean per item. Matches rise out of the pile when their probability clears a floor.
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Problems solved
Technical challenges this implementation handles out of the box.
- Filter a closed catalog with one boolean per item
- Keep the match floor in application code
- Leave non-matches in place instead of inventing results
Use cases
Products and workflows this pattern is designed to support.
- Semantic filters over a known catalog
- Emoji or icon search without embeddings
- Teaching Jev boolean probabilities across many items
Setup
Requirements, wiring steps, and what this pattern adds to your project.
Getting started
Pick how you want to pull this pattern in. Then wire env vars and routes the same way.
- 1
Download → Next.js app
Use Download → Next.js app in the preview toolbar. You get a zip scaffold (Pro downloads rewrite preview `/view/.../api/*` paths to `/api/*` automatically).
- 2
Extract the zip and install dependencies
Unzip the archive, then run `pnpm install` (or npm / yarn) in the project folder.
- 3
Fill .env.local
The download includes .env.local placeholders when needed. Add real values for: AI_GATEWAY_API_KEY.
- 4
Customize the agent and tool files
Adapt prompts, tools, and stop conditions in the generated project for your product.
- 5
Run the app and open the pattern route
Run `pnpm dev`, open the setup/checklist page if present, then navigate to the generated pattern route and verify responses.
Environment variables
AI_GATEWAY_API_KEYGet key
Capabilities
AI SDK APIs
experimental_evaluateProviders
Jev
External services
gatewayvercel-ai-gatewayUpstash
Files added
14 filesapp/page.tsxapp/layout.tsxapp/api/search/route.tscomponents/search-filter-demo.tsxcomponents/catalog-pile.tsxcomponents/typesafe-ai.tsxhooks/use-search-filter.tslib/catalog.tslib/filter-questions.tslib/filter-policy.tslib/pile-layout.tslib/rate-limit.tslib/request-utils.tsREADME.md
Dependencies
7 totalnpm packages
6UpstashAISDKlucide-reactmotionNext.jsReact
Registry components
button
Critical files
lib/filter-policy.tsPure decideFilter policy: keep a catalog id only when P(match) >= 0.70. A missing answer stays out. Do not call Jev from unit tests. Use Experimental_EvaluationMockModelV4.
lib/filter-questions.tsbuildFilterQuestions writes one boolean per catalog item. The item name and hint live in the instructions. MATCH_FLOOR is 0.70 and stays in application code.
lib/catalog.tsClosed emoji catalog. Jev may only answer these ids. Do not let the model invent items.
search/route.tsRate-limited experimental_evaluate call through AI Gateway model typesafe-ai/jev with zeroDataRetention. Returns decideFilter matches, never a free-text list.
Requirements
- Complexity
- Beginner
- Setup time
- ~5 minutes
- Node
- 24+
- Memory
- 256MB
Upstash Redis for deployed demo rate limiting
