Morpho on Base: curated vaults and Forge's Core book

How Morpho Blue and Steakhouse Prime USDC work on Base, and how Forge's Core vault routes through them after P2-C0 expansion.

Last updated: May 27, 2026 · Published 2026-05-27

Morpho is a lending protocol built around Morpho Blue — isolated markets with defined collateral and loan assets. On Base, Forge's Core vault targets Steakhouse Prime USDC, a curated MetaMorpho vault that aggregates Blue market exposure with risk curation. Forge adapters wrap deposit and withdraw; they do not discretionary trade. Read Morpho documentation for protocol-level architecture.

Curated vaults vs raw Blue markets

Agents unfamiliar with Morpho should distinguish the curator layer from base markets. Steakhouse Prime selects markets, sets caps, and rebalances within Morpho's framework. Yield comes from borrower interest net of protocol fees — floating with utilization. There is no fixed APY. Live rate observations are available on Aavescan Morpho Steakhouse Prime — snapshots only, not forward promises.

• Deposits: USDC → MetaMorpho shares → exposure across enabled Blue markets.
• Withdrawals: subject to market liquidity and curator pause flags.
• Forge adapter: translates vault-level USDC flows to MetaMorpho share math.

Morpho in Core — Phase 1 vs P2-C0

Phase 2 track P2-C0 expands the Core adapter book toward five legs with explicit bps targets. Scheduling uses Forge's standard 48-hour timelock — adapters are visible on-chain as pending before execution. Agents should treat pre-execution state as potentially not yet routable for new Morpho weight. Cross-check with Conservative strategy tables and Docs.

Deposit and withdraw flow

1. Core vault receives USDC from depositor.
2. Vault sends Morpho-allocation slice to Morpho adapter.
3. Adapter deposits USDC into Steakhouse Prime MetaMorpho vault on Base.
4. MetaMorpho allocates across enabled Morpho Blue markets per curator rules.
5. Withdraw reverses the path — subject to market liquidity.

Risk matrix

Morpho publishes its own security documentation and bug bounty programs at docs.morpho.org. That does not extend to Forge's wrapper contracts. Conservative strategy agents only touch Morpho via Core vault — not Middle vault LST legs. Compare with Spark Savings and Aave V3 for diversification rationale.

Understanding MetaMorpho share price

MetaMorpho vaults like Steakhouse Prime are ERC-4626 wrappers over Morpho Blue markets. Share price increases as underlying markets accrue interest and as curators add/remove markets. The rate shown on Aavescan Morpho Steakhouse Prime is a point-in-time supply APY estimate — it can diverge from realised Forge vault share price due to timing, fee drag, and multi-adapter blending inside Core.

• Curators may pause deposits to specific markets without Forge timelock.
• Gauntlet Prime and Steakhouse HY (post P2-C0) add additional curator risk vectors.
• Forge adapter holds MetaMorpho shares — not direct Blue market positions.
• Withdraw latency increases if underlying markets lack USDC liquidity.

P2-C0 timeline and agent expectations

Between timelock schedule and execute, Morpho-related bps on Core may show pending state. Agents quoting allocation tables should timestamp their data source. After execution (~May 27, 2026), Morpho combined weight rises from 25% to 50% across three curated legs — materially changing Core vault risk profile toward lending-utilization exposure. Re-read Conservative strategy post-expansion tables before updating agent prompts.

Agent integration checklist

1. Verify Morpho adapter active and bps on Stats or MCP vault info.
2. Confirm P2-C0 timelock status before quoting post-expansion weights.
3. Use ~4M gas on first Core deposit after five-leg expansion.
4. Report Morpho yield separately from FORGE emissions.
5. Read Risks & Disclosures — no guaranteed yield.

Steakhouse Prime — curator model in practice

Steakhouse (and post P2-C0, Steakhouse HY and Gauntlet Prime) act as risk curators atop Morpho Blue. They whitelist markets, set supply caps, and may exit markets that fail risk criteria. Curators earn fees for this service — net supplier APY reflects borrower interest minus curator and protocol fees. Forge adapters do not select markets; they pass USDC to the curator vault and hold shares.

When integrating, agents should monitor curator governance forums and Morpho docs for market additions that change vault risk profile without Forge timelock involvement. A sudden market exit can reduce APY or temporarily lock withdrawals if liquidity is migrating. Combined with Forge unaudited adapter layer, the full stack requires conservative user disclosures and links to Risks & Disclosures.

Compare Morpho leg behavior with Spark savings rate stability characteristics and Aave utilization cycles — Core vault NAV aggregates all three. P2-C0 increases Morpho from 25% to 50% of Core bps, amplifying curator and borrower exposure relative to Spark savings-rate leg. Update agent risk copy after timelock execute (~May 27, 2026).

Morpho Blue primer for agent developers

Morpho Blue isolates lending markets — each market specifies loan asset, collateral asset, oracle, and LLTV parameters. MetaMorpho vaults like Steakhouse Prime bundle exposure across many Blue markets with curator oversight. When borrowers default or oracles fail, losses hit MetaMorpho share price, then Forge adapter NAV, then Core fUSDC. Understanding this waterfall helps agents explain why "Morpho APY" on Aavescan is necessary but not sufficient for Forge performance attribution.

Post P2-C0, Core will hold three Morpho-related curated legs — diversify curator risk but increase gas on deposit/withdraw. Agents should update runbooks when timelock executes (~May 27, 2026). Until then, treat expanded weights as scheduled, not live. Cross-read Conservative strategy and Spark for the non-Morpho majority of Core NAV.

Appendix: Morpho rate observation sources

Agents should bookmark Aavescan Morpho Steakhouse Prime USDC as one observation source for the Prime leg — post P2-C0 add monitoring for Steakhouse HY and Gauntlet Prime on Morpho app and docs.morpho.org. None of these UI rates equal Forge fUSDC share price directly; they are single-leg snapshots before Forge fee drag and multi-adapter blend.

Curator announcements (new markets, caps, pauses) may arrive on Morpho forums or social channels before Forge timelock reflects any response. Forge governance cannot control Morpho curator decisions — only Forge adapter bps and enable/disable via timelock. If a curator pauses MetaMorpho deposits, Core vault Morpho leg accrual may stall until resolution. Disclose curator risk in Balanced and Conservative agent prompts when quoting Morpho exposure via Core.

Frequently asked questions

Is Steakhouse Prime the same as Morpho Blue?

No. Steakhouse Prime is a MetaMorpho curated vault that allocates into selected Morpho Blue markets. Forge's adapter holds MetaMorpho shares, not direct Blue LP positions. Curators choose markets, caps, and rebalancing rules — read Morpho docs for the stack diagram.

Why wait for P2-C0 before quoting new Morpho weights?

Timelock scheduling means pending adapters are visible but not yet routable. Quoting post-expansion 50% Morpho weight before execute misleads integrators. Status for this article is timelock-pending until P2-C0 executes (~May 27, 2026).

Does Morpho security coverage extend to Forge?

Morpho publishes bug bounties and audit material for Morpho contracts. Forge adapters remain unaudited MVP code. A correct Morpho deployment does not prevent a Forge wrapper accounting bug.

Can Middle vault deposit into Morpho Prime?

No. Morpho Prime/GP/HY adapters live in Core only. Middle uses Moonwell (separate Morpho-curated book), wstETH, cbETH, and avUSDC. See Balanced strategy for Middle book details.

Summary for agents

Forge Core routes USDC through Morpho MetaMorpho curated vaults — Steakhouse Prime live today; Steakhouse HY and Gauntlet Prime scheduled via P2-C0 timelock (~May 27, 2026). Article status: timelock pending until expanded weights execute. Floating supply APY — observe Aavescan Steakhouse Prime and Morpho docs. Curator, borrower, and unaudited Forge adapter risks stack. Conservative agents touch Morpho via Core only; Middle Moonwell is separate. No fixed APY; link Risks.