Loading pattern preview
BlocksTools & Utilities
Jev Infinite FAQ
Jev Infinite FAQ
A FAQ whose last row is a live ask field. Jev opens a canned answer when it matches, or a short grounded answer becomes another row.
Use this when FAQ visitors ask in their own words and you want to open the matching canned answer or add a grounded answer as a new row.
Loading pattern preview
Problems solved
Technical challenges this implementation handles out of the box.
- Open a canned FAQ answer from free-form wording
- Append a grounded answer as another FAQ row
- Refuse when the passages cannot answer
Use cases
Products and workflows this pattern is designed to support.
- FAQ that accepts any wording
- Growing the accordion with live answers
- Teaching Jev match then grounded generateText
Compare with
Similar patterns, and when each one is the better fit.
Jev Table QueryUse this when users type filter or sort requests over a fixed table, with column sorts run in code and other phrases scored by the model per row.
Jev Output VerifierUse this when you want your own code to hold the confidence floor a draft answer must clear before display, with at most one retry on a miss.
Jev Loop BreakerUse this when an agent looks up facts step by step and you want the stop threshold in your own code, not left to the model to decide.
Jev Search FilterFreeUse this when you want semantic search over a known catalog, such as emoji or icons, without building embeddings, scoring each item with a boolean.
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_evaluategenerateTextProviders
Jev
External services
gatewayvercel-ai-gatewayUpstash
Files added
12 files
app/page.tsxapp/layout.tsxapp/api/faq/route.tscomponents/infinite-faq-demo.tsxhooks/use-infinite-faq.tslib/faq.tslib/passages.tslib/faq-questions.tslib/faq-policy.tslib/rate-limit.tslib/request-utils.tsREADME.md
Dependencies
7 total
npm packages
6UpstashAISDKlucide-reactmotionNext.jsReact
Registry components
button
Critical files
5 files
lib/faq-policy.tsevaluateFaq first decides a canned open via decideOpen (>= 0.70). On a miss, decideGrounded gates generateText with a boolean over hardcoded passages. The writer uses reasoning none so the token budget is the answer, and it does not refuse on its own. A grounding miss returns the fixed refuse copy. Inject writeAnswer in tests. Do not call Jev or generateText from unit tests. Use Experimental_EvaluationMockModelV4.
lib/faq-questions.tsFAQ is the closed canned set. buildFaqQuestions copies each question plus a gist into the choice criteria. GROUND_QUESTIONS asks whether the passages contain the facts. Floors stay in application code.
lib/faq.tsClosed FAQ entries and canned answers about AI SDK Agents. The client looks up static ids here. Live answers append as separate rows.
lib/passages.tsHardcoded grounding passages. generateText may only use this text. Do not fetch live docs or embeddings.
faq/route.tsRate-limited evaluateFaq through AI Gateway. Returns open-static, append, or refuse. Does not return a chat transcript.
Requirements
- Complexity
- Beginner
- Setup time
- ~5 minutes
- Node
- 24+
- Memory
- 256MB
Upstash Redis for deployed demo rate limiting
