Changelog: May 2026
What shipped across Jupiter's developer APIs in May 2026. The headline is Metis V8, a routing overhaul aimed at the gap between the price you're quoted and the price that lands.
Breaking changes
The onchain router value is now metis, not irisBreaking
Swap API /order responses return router: "metis" for onchain-routed swaps.
WTM (what this means) - Integrators matching on router === "iris" must update the comparison. "Iris" was the legacy name for Jupiter's onchain routing engine; the canonical name is Metis.
Trigger V2 craft-deposit requires explicit order metadataBreaking
Enforced from Thursday, May 14, 2026 at 4:00 AM UTC / 12:00 PM SGT. POST https://api.jup.ag/trigger/v2/deposit/craft requires order metadata when crafting deposits for price orders:
- Add
orderType: "price"to the craft-deposit request body - Add
orderSubType: "single","oco", or"otoco"based on the order you will create - Requests that omit
orderType, or omitorderSubTypefor price orders, return a4xxafter enforcement
WTM - The API needs to know upfront what kind of order a deposit funds. No change is required on POST /trigger/v2/orders/price. The deposit craft response may include inputTokenAccount, and includes outputTokenAccount for orderSubType: "otoco"; you do not need to pass those token account fields into the create-order request.
Swap
Metis V8 routing upgrade is live
Metis, Jupiter's onchain router, now optimises for the price that actually lands rather than the price it quotes, closing quote-execution (QE) drift on four fronts:
- Slippage penalties - markets that historically slip on execution are penalised or filtered, so quotes reflect what actually fills
- JIT onchain finalisation - route splits are locked in onchain at execution, not ~400ms earlier at quote time
- Sub-2-slot state - gRPC streaming plus Jupiter's own validator shreds keep routing decisions within two slots of the chain tip
- Rapid Quotation Mode - opt in for a sub-100ms quote that skips marginal optimisation, when landing next slot beats chasing basis points
WTM - These are server-side routing improvements, so existing integrations pick up the accuracy and freshness gains with no code change. Rapid Quotation Mode is the one opt-in: reach for it on volatile tokens or common hops where landing in the next slot beats chasing a few bps.
Engineering deep dive on quote-execution drift
A new post walks through why the price you see diverges from the price you get onchain, and how RTSE and Metis V8 attack each source of drift.
AI
Helius x Jupiter skill for Claude Code
Helius shipped a Claude Code skill that pairs Jupiter's APIs with their RPCs and trading infrastructure, so agents can build swaps, limit orders, DCA, prediction-market apps, and analytics dashboards end to end. Install with claude plugin install helius@claude-plugins-official.