this is pure treasure: 20 open-source JEV combos you can plug into real products.
JEV gives you 3 primitives: Choice, Score and Noul. it makes the judgment, code enforces the rules, and another tool executes the work.
ROUTE THE WORK
1. JEV × Hermes Agent
route decisions into autonomous agent workflows.
github.com/NousResearch/herm…
2. JEV × LangGraph
use JEV as a decision layer inside graph-based agent flows.
github.com/langchain-ai/lang…
3. JEV × MCP SDK
let JEV decide which tool or action should run next.
github.com/modelcontextproto…
4. JEV × Temporal
use JEV decisions inside durable workflows.
github.com/temporalio/sdk-ty…
5. JEV × E2B
combine narrow decisions with sandboxed code execution.
github.com/e2b-dev/E2B
FIND THE EVIDENCE
6. JEV × Meilisearch
retrieve relevant context before making a decision.
github.com/meilisearch/meili…
7. JEV × Qdrant
score decisions against vector-retrieved evidence.
github.com/qdrant/qdrant
8. JEV × Docling
turn documents into structured context for JEV.
github.com/docling-project/d…
9. JEV × Graphiti
use graph memory to give JEV better context.
github.com/getzep/graphiti
10. JEV × LlamaIndex
connect retrieval pipelines directly to the decision layer.
github.com/run-llama/llama_i…
VERIFY THE RESULT
11. JEV × Langfuse
trace and inspect decisions in production.
github.com/langfuse/langfuse
12. JEV × Promptfoo
test JEV decisions against evals and failure cases.
github.com/promptfoo/promptf…
13. JEV × Semgrep
judge findings, then let code enforce security rules.
github.com/semgrep/semgrep
14. JEV × Sentry
route errors into the right recovery path.
github.com/getsentry/sentry
15. JEV × Playwright
verify browser actions before moving to the next step.
github.com/microsoft/playwri…
OPERATE THE PRODUCT
16. JEV × GitHub MCP
decide when to inspect repos, issues or code changes.
github.com/github/github-mcp…
17. JEV × PostHog
use product data to score what should happen next.
github.com/PostHog/posthog
18. JEV × Resend
decide when and what email action should run.
github.com/resend/resend-nod…
19. JEV × Stripe
put a decision layer in front of payment workflows.
github.com/stripe/stripe-nod…
20. JEV × Cloudflare Workers AI
run lightweight decision flows close to the edge.
github.com/cloudflare/worker…
the loop:
collect state → ask JEV a precise Choice, Score or Noul question → check confidence and policy in code → execute or escalate to a human → log the result.
these are architecture ideas, not official integrations.
save this and build a second brain for your product.