> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tc.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Testnet configuration

> Endpoint, contract, token, EIP-712, and market configuration reference for TrueCurrent RFQ SDK integrations on testnet.

Use this page to configure clients and sanity-check `.env` values. Use the [Runbook](/sdk-trading/runbook) for procedural validation.

***

## Chain and contract

| Setting          | Value                                          |
| ---------------- | ---------------------------------------------- |
| Cosmos chain ID  | `injective-888`                                |
| EIP-712 chain ID | `1439`                                         |
| Chain gRPC       | `testnet-grpc.injective.dev:443`               |
| Chain LCD        | `https://testnet.sentry.lcd.injective.network` |
| RFQ contract     | `inj1qw7jk82hjvf79tnjykux6zacuh9gl0z0wl3ruk`   |
| Contract version | `0.1.0-alpha.6`                                |
| Explorer         | `https://testnet.explorer.injective.network`   |

<Warning>
  `injective-888` and `1439` are both required, but they are not interchangeable. `quote.chain_id` is the Cosmos chain ID and must be `injective-888` on testnet. `quote.evm_chain_id` and the EIP-712 domain `chainId` use `1439`. Raw MakerStream quote payloads use snake\_case field names; passing `1439` as `quote.chain_id` is a known integration failure mode.
</Warning>

| Context                      | Testnet value   |
| ---------------------------- | --------------- |
| EIP-712 domain `chainId`     | `1439`          |
| Quote payload `evm_chain_id` | `1439`          |
| Quote payload `chain_id`     | `injective-888` |

***

## RFQ indexer endpoints

| Service         | Endpoint                                                                               |
| --------------- | -------------------------------------------------------------------------------------- |
| WebSocket base  | `wss://testnet.rfq.ws.injective.network/injective_rfq_rpc.InjectiveRfqRPC`             |
| MakerStream WSS | `wss://testnet.rfq.ws.injective.network/injective_rfq_rpc.InjectiveRfqRPC/MakerStream` |
| TakerStream WSS | `wss://testnet.rfq.ws.injective.network/injective_rfq_rpc.InjectiveRfqRPC/TakerStream` |
| gRPC-web base   | `https://testnet.rfq.grpc.injective.network/injective_rfq_rpc.InjectiveRfqRPC`         |
| Native gRPC     | `testnet.rfq.grpc.injective.network:443`                                               |
| HTTP            | `https://testnet.rfq.injective.network`                                                |

The public service alias is `injective_rfq_rpc.InjectiveRfqRPC`. The deployed paths use underscores and `InjectiveRfqRPC`; do not substitute the internal proto package name.

Most SDK clients store the WebSocket base endpoint and append `/MakerStream` or `/TakerStream` internally. Do not append the stream path twice.

***

## Tokens

| Asset | Denom                                              | Use        |
| ----- | -------------------------------------------------- | ---------- |
| INJ   | `inj`                                              | Gas        |
| USDC  | `erc20:0x0C382e685bbeeFE5d3d9C29e29E341fEE8E84C5d` | RFQ margin |

Fund both the bank balance for gas and the exchange subaccount for margin. Maker margin must be available in the subaccount nonce registered for that maker.

Faucet: `https://testnet-faucet.injective.dev`

***

## Markets

| Symbol           | Market ID                                                            | Price tick |
| ---------------- | -------------------------------------------------------------------- | ---------- |
| `INJ/USDC PERP`  | `0xdc70164d7120529c3cd84278c98df4151210c0447a65a2aab03459cf328de41e` | `0.01`     |
| `BTC/USDC PERP`  | `0xfd704649cf3a516c0c145ab0111717c44640d8dbe52a462ae35cadf2f6df1515` | `1`        |
| `LINK/USDC PERP` | `0xdbb9bb072015238096f6e821ee9aab7affd741f8662a71acc14ac30ee6b687a5` | `0.001`    |
| `ETH/USDC PERP`  | `0x135de28700392fb1c17d40d5170a74f30055a4ad522feddafec42fbbbb780897` | `0.1`      |

Snap prices and quantities to the market rules before signing. The signature covers the exact decimal strings you send.

***

## Environment variables

Minimum `.env` for local tests:

```bash theme={null}
RFQ_ENV=testnet

TESTNET_MM_PRIVATE_KEY=<hex>
TESTNET_RETAIL_PRIVATE_KEY=<hex>
```

Optional variables:

```bash theme={null}
TESTNET_RELAYER_PRIVATE_KEY=<hex> # signed-intent relay tests
TESTNET_ADMIN_PRIVATE_KEY=<hex>   # maker registration admin flows
```

Manual client configuration:

```yaml theme={null}
chain:
  chain_id: injective-888
  grpc_endpoint: testnet-grpc.injective.dev:443
  lcd_endpoint: https://testnet.sentry.lcd.injective.network

contract:
  address: inj1qw7jk82hjvf79tnjykux6zacuh9gl0z0wl3ruk
  version: 0.1.0-alpha.6

signing:
  evm_chain_id: 1439

indexer:
  ws_endpoint: wss://testnet.rfq.ws.injective.network/injective_rfq_rpc.InjectiveRfqRPC
  grpc_web_endpoint: https://testnet.rfq.grpc.injective.network/injective_rfq_rpc.InjectiveRfqRPC
  http_endpoint: https://testnet.rfq.injective.network
  grpc_endpoint: testnet.rfq.grpc.injective.network:443

tokens:
  usdc: erc20:0x0C382e685bbeeFE5d3d9C29e29E341fEE8E84C5d
```

***

## Mainnet signing contrast

Mainnet uses Cosmos chain ID `injective-1` and EIP-712 chain ID `1776`. Pull both values from environment config instead of hardcoding when writing reusable clients.