# Enable/disable collateral

Endpoint reference for the 1delta API. Index: https://docs.1delta.io/llms.txt · every endpoint: https://docs.1delta.io/llms-full.txt

---

### GET /v1/actions/lending/enable-collateral

- operationId: `enable-disable-collateral`
- docs: https://docs.1delta.io/1delta-api/enable-disable-collateral/
- markdown: https://docs.1delta.io/1delta-api/enable-disable-collateral.md
- tags: Lending (Actions)

Enable/disable collateral

Build calldata for toggling an asset as collateral. Supported on lenders with explicit collateral toggles (Aave V2/V3, Compound V2 via `enterMarkets`/`exitMarket`); other lenders return a 400. Identify the market via `marketUid` (format: `lender:chainId:address`).

**Parameters**

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `marketUid` | query | string | yes | Market identifier (`lender:chainId:address`). The address encodes the underlying token (Aave) or cToken (CompoundV2). |
| `enabled` | query | boolean | yes | true to enable, false to disable |

**Response `200`** — Transaction calldata

| Field | Type | Description |
| --- | --- | --- |
| `success` | true |  |
| `data` | object | Response from direct-mode lending operations (deposit, withdraw, borrow, repay). |
| `data.transaction` | object | An EVM transaction ready to sign and broadcast. Send `to`, `data` and `value` as-is; do not re-encode them. |
| `data.transaction.to` | string | Target contract address |
| `data.transaction.data` | string | Encoded calldata |
| `data.transaction.value` | string | ETH value to send with the transaction |
| `data.transaction.description` | string | Human-readable label. For `alternatives`, this is the aggregator name (e.g. "Paraswap"). For `transactions`, describes the setup action (e.g. "Switch e-mode to 1"). |
| `data.permissionTxns` | object[] | Approval transactions that must be executed before the main transaction. Empty when the user already has sufficient allowances. |
| `data.permissionTxns[].to` | string | Target contract address |
| `data.permissionTxns[].data` | string | Encoded calldata |
| `data.permissionTxns[].value` | string | ETH value |
| `data.permissionTxns[].description` | string | Human-readable description of the approval (e.g. "Approve borrow for AAVE_V3", "Approve ERC20") |
| `data.permissionTxns[].spender` | string | ERC-20 approve spender (x-chain permissions). Match it against the selected quote's `approvalTarget` — several bridges can share one spender, so do not match by description. |
| `data.rateImpact` | object[] | Projected interest-rate impact per market. Single-market actions produce 1 entry; loop actions produce 2. Null if IRM data is unavailable. |
| `data.rateImpact[].marketUid` | string | Market identifier (format: `lender:chainId:address`) |
| `data.rateImpact[].utilization` | object | A current/projected pair for a single rate metric. |
| `data.rateImpact[].utilization.current` | number | Current value |
| `data.rateImpact[].utilization.projected` | number | Projected value after the action |
| `data.rateImpact[].borrowRate` | object | A current/projected pair for a single rate metric. |
| `data.rateImpact[].borrowRate.current` | number | Current value |
| `data.rateImpact[].borrowRate.projected` | number | Projected value after the action |
| `data.rateImpact[].depositRate` | object | A current/projected pair for a single rate metric. |
| `data.rateImpact[].depositRate.current` | number | Current value |
| `data.rateImpact[].depositRate.projected` | number | Projected value after the action |
| `actions` | object | Transaction calldata and approvals. Null for quote-only responses (no account provided). |
| `actions.transactions` | object[] | Pre-trade setup transactions (e.g. e-mode switch, collateral enable). Execute these before the main swap. Empty when no setup is needed. |
| `actions.transactions[].to` | string | Target contract address |
| `actions.transactions[].data` | string | Encoded calldata |
| `actions.transactions[].value` | string | ETH value to send with the transaction |
| `actions.transactions[].description` | string | Human-readable label. For `alternatives`, this is the aggregator name (e.g. "Paraswap"). For `transactions`, describes the setup action (e.g. "Switch e-mode to 1"). |
| `actions.alternatives` | object[] | DEX aggregator swap transactions sorted by best output (descending). Each entry's `description` is the aggregator name. The client should pick one to execute. Present on loop action endpoints. |
| `actions.alternatives[].to` | string | Target contract address |
| `actions.alternatives[].data` | string | Encoded calldata |
| `actions.alternatives[].value` | string | ETH value to send with the transaction |
| `actions.alternatives[].description` | string | Human-readable label. For `alternatives`, this is the aggregator name (e.g. "Paraswap"). For `transactions`, describes the setup action (e.g. "Switch e-mode to 1"). |
| `actions.permissions` | object[] | Approval/delegation transactions that must execute before both `transactions` and `alternatives`. Includes ERC20 allowances (targeting the composer contract) and lender borrow/withdrawal delegations (targeting the lending protocol contract directly). Filtered against on-chain state so only missing approvals are returned. Null when no approvals are needed. |
| `actions.permissions[].to` | string | Target contract address |
| `actions.permissions[].data` | string | Encoded calldata |
| `actions.permissions[].value` | string | ETH value |
| `actions.permissions[].description` | string | Human-readable description of the approval (e.g. "Approve borrow for AAVE_V3", "Approve ERC20") |
| `actions.permissions[].spender` | string | ERC-20 approve spender (x-chain permissions). Match it against the selected quote's `approvalTarget` — several bridges can share one spender, so do not match by description. |

**Example response**

```json
{
  "success": true,
  "data": {
    "transaction": {
      "to": "0x87870Bca3F3fD6335C3F4ce8392D69350B4fA4E2",
      "data": "0x617ba037000000000000000000000000c02aaa39b2",
      "value": "0",
      "description": "string"
    },
    "permissionTxns": [
      {
        "to": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
        "data": "0x617ba037000000000000000000000000c02aaa39b2",
        "value": "0",
        "description": "string",
        "spender": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"
      }
    ],
    "rateImpact": [
      {
        "marketUid": "AAVE_V3:8453:0x4200000000000000000000000000000000000006",
        "utilization": {
          "current": 1,
          "projected": 1
        },
        "borrowRate": {
          "current": 1,
          "projected": 1
        },
        "depositRate": {
          "current": 1,
          "projected": 1
        }
      }
    ]
  },
  "actions": {
    "transactions": [
      {
        "to": "0x87870Bca3F3fD6335C3F4ce8392D69350B4fA4E2",
        "data": "0x617ba037000000000000000000000000c02aaa39b2",
        "value": "0",
        "description": "string"
      }
    ],
    "alternatives": [
      {
        "to": "0x87870Bca3F3fD6335C3F4ce8392D69350B4fA4E2",
        "data": "0x617ba037000000000000000000000000c02aaa39b2",
        "value": "0",
        "description": "string"
      }
    ],
    "permissions": [
      {
        "to": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
        "data": "0x617ba037000000000000000000000000c02aaa39b2",
        "value": "0",
        "description": "string",
        "spender": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"
      }
    ]
  }
}
```

**Response `400`** — Validation error

**Response `429`** — Rate limited. Unauthenticated callers share a per-IP budget; send an `x-api-key` header to lift it. Retry with exponential backoff.

**Response `500`** — Unexpected server error. Safe to retry with backoff.

**Response `502`** — An upstream data source or protocol origin failed (`error.code` is `ORIGIN_FAILED`). `error.details` carries the per-origin status. This is also what a missing or malformed required parameter currently returns, rather than a 400.