Arc plugs Morpho Vaults into its Earn Kit SDK for USDC yield
Arc added Morpho Vaults to its Earn Kit SDK so developers can connect wallets, exchanges, and fintech apps to USDC and EURC lending through Morpho vaults on Arc. The integration was described as a TypeScript SDK update, and Morpho deposits were reported above $500 million at the time of the Oct. 8 update.
Key claims & sources
What it means
Developers building wallets, exchanges, and fintech apps are the immediate users of this change, because the SDK now connects those products to Morpho vaults on Arc. That makes the update visible to anyone using a TypeScript integration for USDC or EURC lending in those apps.
What changes in practice is that Arc’s Earn Kit now includes Morpho Vaults inside the SDK instead of leaving that connection outside the kit. The lending use case remains centered on USDC and EURC, and the SDK remains a TypeScript tool for linking apps to those vaults.
Market reaction i
The move was larger before the first headline than after. That is an observation, not an explanation: the market also moves on things nobody publishes.
Coverage timeline
Every piece in order, with the time its news medium declares — if it is not believable we use ours and say so — and what it added to what was already known at that point. Arriving first is not the same as adding something.
Crypto Briefing
What US 10-year Treasury has done before
| When | What happened | Figure |
|---|---|---|
| 2 days ago | US 10-year Treasury: 4.84 (-0.06) fall | Nov 2026 |
| 3 days ago | US 10-year Treasury: 4.9 (-0.05) fall | Nov 2026 |
| 4 days ago | US 10-year Treasury: 4.95 (+0.04) rise | Nov 2026 |
| 5 days ago | US 10-year Treasury: 4.91 (-0.03) fall | Nov 2026 |
| 8 days ago | US 10-year Treasury: 4.94 (-0.04) fall | Oct 2026 |
FRED series, with the value of each release and its change.