Add Ethereum and Plasma USDT funding support

.claude/skills/grid-api/SKILL.md

@@ -556,7 +556,7 @@ Use this flow when the user asks for a "realtime quote" or "just in time" funded
 
 **Compatible instant methods:**
 
-- **Crypto:** BTC (Lightning, Spark), USDC (Solana, Base, Polygon, Ethereum), USDT (Tron)
+- **Crypto:** BTC (Lightning, Spark), USDC (Solana, Base, Polygon, Ethereum), USDT (Tron, Ethereum, Plasma)
 - **Fiat:** RTP, SEPA Instant, and other instant payment rails
 
 **Flow:**

.claude/skills/grid-api/references/account-types.md

@@ -53,9 +53,10 @@ The **Available Rails** column lists the payment rails Grid may use for the crea
 |------|----------|-------------------|
 | SPARK_WALLET | BTC | Spark wallet address |
 | LIGHTNING | BTC | Lightning invoice, bolt12 offer, or lightning address |
-| ETHEREUM_WALLET | USDC | Ethereum L1 wallet address (0x...) |
+| ETHEREUM_WALLET | USDC, USDT | Ethereum L1 wallet address (0x...) |
 | SOLANA_WALLET | USDC | Solana wallet address |
 | TRON_WALLET | USDT | TRON wallet address |
+| PLASMA_WALLET | USDT | Plasma wallet address (0x...) |
 | POLYGON_WALLET | USDC | Polygon wallet address (0x...) |
 | BASE_WALLET | USDC | Base wallet address (0x...) |
 
@@ -976,9 +977,10 @@ curl -s -u "$GRID_CLIENT_ID:$GRID_CLIENT_SECRET" \
 #### Other Crypto Wallets
 
 - **TRON_WALLET**: USDT, requires `address`
+- **PLASMA_WALLET**: USDT, requires `address` (0x format)
 - **POLYGON_WALLET**: USDC, requires `address` (0x format)
 - **BASE_WALLET**: USDC, requires `address` (0x format)
-- **ETHEREUM_WALLET**: USDC, requires `address` (0x format)
+- **ETHEREUM_WALLET**: USDC or USDT, requires `address` (0x format)
 
 **Note:** Crypto wallets do NOT require beneficiary information.
 

mintlify/snippets/internal-accounts.mdx

@@ -197,6 +197,20 @@ Each internal account includes `fundingPaymentInstructions` that tell your custo
     ```
   </Accordion>
 
+  <Accordion title="Ethereum Stablecoin Funding">
+    For Ethereum L1 wallet accounts (USDC or USDT), using an Ethereum wallet as the funding source:
+
+    ```json
+    {
+      "accountOrWalletInfo": {
+        "accountType": "ETHEREUM_WALLET",
+        "assetType": "USDT",
+        "address": "0xAbCDEF1234567890aBCdEf1234567890ABcDef12"
+      }
+    }
+    ```
+  </Accordion>
+
   <Accordion title="Tron Stablecoin Funding">
     For Tron wallet accounts, using a Tron wallet as the funding source:
 

openapi/components/schemas/quotes/RealtimeFundingQuoteSource.yaml

@@ -29,7 +29,8 @@ allOf:
           The crypto network to use for the funding source. Required when `currency` is a
           stablecoin (e.g. USDC, USDT). Specifies which network the customer will deposit
           on, so the correct deposit address can be generated. Example values:
-          `SOLANA`, `ETHEREUM`, `BASE`, `POLYGON`, `SPARK`, `LIGHTNING`, `BITCOIN`.
+          `SOLANA`, `ETHEREUM`, `BASE`, `POLYGON`, `TRON`, `PLASMA`, `SPARK`,
+          `LIGHTNING`, `BITCOIN`.
         example: SOLANA
     description: >-
       Fund the quote using a real-time funding source (RTP, SEPA Instant, Spark, Stables, etc.).