Morpho Blue Borrow
Borrow loan token against existing collateral in a Morpho Blue market. Optional maxLtvPercent safety cap prevents accidentally borrowing to dangerous LTV. Supports Ethereum (1), Optimism (10), Polygon (137), Base (8453), Arbitrum (42161). Ideal for: opening leverage positions, cash-out against collateral, automated borrowing.
Catalog action EVM Onchain wallet Gas
Borrow loan token against existing collateral in a Morpho Blue market. Optional maxLtvPercent safety cap prevents accidentally borrowing to dangerous LTV. Supports Ethereum (1), Optimism (10), Polygon (137), Base (8453), Arbitrum (42161). Ideal for: opening leverage positions, cash-out against collateral, automated borrowing.
This action can require a wallet connector, gas, token movement, or an external side effect. Test with simulation or a controlled amount before using it in a live workflow.
At a Glance
| Field | Value |
|---|---|
| Action ID | morpho-blue-borrow |
| Category | EVM Onchain |
| Connector | wallet |
| Requires gas | Yes |
| Funds movement | None declared |
| Tags | morpho, morpho-blue, lending, borrow, write, defi |
Payload Schema
| Field | Type | Required | Description |
|---|---|---|---|
marketId | string | Yes | Morpho Blue market ID (bytes32 hex) |
chainId | number | Yes | Chain ID. Supported: Ethereum (1), Optimism (10), Polygon (137), Base (8453), Arbitrum (42161) |
amount | string | Yes | Amount of loan token to borrow in smallest unit (wei). E.g. "50000000" = 50 USDC. |
maxLtvPercent | number | No | Optional safety cap. Reject the borrow if the resulting LTV would exceed this percentage. Example: 75 = cap at 75%. |
gasLimit | string | No | Optional gas limit as a positive integer string (e.g., "300000") |
Result Schema
| Field | Type | Required | Description |
|---|---|---|---|
status | string | Yes | - |
transactionHash | string | Yes | - |
transactionUrl | string | No | Block explorer URL for the transaction (e.g. https://basescan.org/tx/0x...\) |
blockNumber | number | No | - |
borrowedAmount | string | No | Raw amount of loan token borrowed in this call (wei) |
borrowedAmountFormatted | string | No | Human-readable borrowed amount in loan token units |
resultingLtvPercent | number | No | Position LTV (%) after this borrow, computed from oracle price |
Examples
json{ "type": "morpho-blue-borrow", "payload": { "marketId": "example-marketId", "chainId": 1, "amount": "1000000" }, "children": [], "connector": { "type": "wallet", "id": "conn_wallet" }}
bashcurl -X POST "https://api.b3os.org/v1/actions/morpho-blue-borrow/test" \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "inputs": { "marketId": "example-marketId", "chainId": 1, "amount": "1000000" }}'
Payload fields can use workflow expressions such as {{$trigger.body.amount}}, {{$nodes.fetch.result.price}}, and {{$props.asset}} when the value should come from a trigger, prior node, or reusable workflow prop.