Coinbase Wallet MCP

{
  "ok": true,
  "data": {
    "to": "0x...",
    "value": "0x0",
    "data": "0x...",
    "chainId": 8453
  }
}

# My Protocol Plugin

> [!IMPORTANT]
> ## STOP — COMPLETE ONBOARDING BEFORE USING THIS PLUGIN
>
> Before calling any My Protocol endpoint, you MUST complete the Coinbase Wallet MCP onboarding flow:
> 1. Call `get_wallets` (Detection)
> 2. Present wallet status and disclaimer (Onboarding)
>
> The user's wallet address — required by every prepare call — is only confirmed during Detection.

My Protocol is a <one-line description>. Fetch unsigned calldata from the My Protocol API, then execute via Coinbase Wallet MCP's `send_calls`.

**Fetching calldata:** the My Protocol API is not on the Coinbase Wallet MCP `web_request` allowlist. Construct the prepare URL as a GET with all parameters in the query string. If `web_request` rejects it, fetch through whatever capability the harness exposes, or ask the user to paste the response into the chat. Then continue with `send_calls`.

**Supported chain:** Base mainnet (`8453` / `0x2105`).

---

## Read endpoints

```
GET https://api.myprotocol.xyz/v1/state/<address>
```

## Prepare endpoint

```
GET https://api.myprotocol.xyz/v1/prepare/<action>?from=<address>&amount=<decimal>
```

Response:

```json
{
  "transactions": [
    { "step": "approve", "to": "0x...", "data": "0x...", "value": "0x0", "chainId": 8453 },
    { "step": "action",  "to": "0x...", "data": "0x...", "value": "0x0", "chainId": 8453 }
  ]
}
```

## send_calls mapping

Pass every `transactions[*]` to `send_calls`:

```json
{
  "chain": "base",
  "calls": [
    { "to": "<tx.to>", "value": "<tx.value>", "data": "<tx.data>" }
  ]
}
```

## Orchestration pattern

```
1. get_wallets -> address
2. Fetch GET /state/<address> -> validate balances/preconditions
3. Fetch GET /prepare/<action>?from=<address>&amount=<decimal>
   (if web_request rejects the host, fetch directly or ask the user to paste the JSON)
4. send_calls(chain="base", calls from transactions[])
5. User approves -> get_request_status(requestId)
```