# Sign a transaction — Overledger

> Sign a transaction using Overledger - Part 2 of Overledger Pattern. See documentation

- Key: `overledger-sign-a-transaction`
- Type: Action (Write)
- Version: 0.0.4
- App: Overledger (`overledger`) — https://pipedream.com/apps/overledger.md
- This page (HTML): https://pipedream.com/apps/overledger/actions/sign-a-transaction
- Hints: open-world
- Source: https://github.com/PipedreamHQ/pipedream/blob/master/components/overledger/actions/sign-a-transaction/sign-a-transaction.mjs

## Description

Sign a transaction using Overledger - Part 2 of [Overledger Pattern](https://developers.quant.network/reference/overledger-pattern). [See documentation](https://developers.quant.network/reference/sandboxsigning)

## Props

| Prop | Type | Required | Description |
|---|---|---|---|
| `environment` | `string` | Yes | Select the Overledger instance to be used |
| `locationTechnology` | `string` | Yes | The blockchain technology used for this transaction, e.g., ethereum, substrate - required in order to set the dltfee |
| `keyId` | `string` | Yes | The ID/address of the blockchain account that will sign the transaction. |
| `requestId` | `string` | Yes | The Request ID assigned to a preparation request in Overledger. This should be set to the requestId parameter found in the response object of the 'Prepare Transaction' Overledger action. |
| `transactionSigningResponderName` | `string` | Yes | The name of the Transaction Signing Responder you would like to use. The CTA Transaction Signing Responder is the Quant-provided signer for testnet accounts. |
| `nativeData` | `object` | Yes | An object representing the transaction required to be signed - This should be set to the nativeData object of the 'Prepare Transaction' Overledger action. |

## Run it

**MCP**

```ts
import { Client } from "@modelcontextprotocol/sdk/client/index.js"
import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js"
import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const accessToken = await pd.rawAccessToken

const transport = new StreamableHTTPClientTransport(
  new URL("https://remote.mcp.pipedream.net/v3"),
  {
    requestInit: {
      headers: {
        Authorization: `Bearer ${accessToken}`,
        "x-pd-project-id": process.env.PIPEDREAM_PROJECT_ID!,
        "x-pd-environment": "production",
        "x-pd-external-user-id": "{external_user_id}", // any stable ID for this user in your system
        "x-pd-app-slug": "overledger",
      },
    },
  },
)

const mcp = new Client({ name: "my-agent", version: "1.0.0" })
await mcp.connect(transport)

const { tools } = await mcp.listTools()

// listTools() hands your model this tool's input schema, so it can
// fill the arguments itself:
const result = await mcp.callTool({
  name: "overledger-sign-a-transaction",
  arguments: {
    environment: "Overledger Instance",
    locationTechnology: "Location Technology",
  },
})
```

**TypeScript**

```ts
import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const result = await pd.actions.run({
  id: "overledger-sign-a-transaction",
  externalUserId: "{external_user_id}", // any stable ID for this user in your system
  configuredProps: {
    overledger: { authProvisionId: "apn_xxxxxxx" },
    environment: "Overledger Instance",
    locationTechnology: "Location Technology",
  },
})

console.log(result)
```

**cURL**

```bash
curl -X POST https://api.pipedream.com/v1/connect/{project_id}/actions/run \
  -H "Content-Type: application/json" \
  -H "X-PD-Environment: production" \
  -H "Authorization: Bearer {access_token}" \
  -d '{
    "external_user_id": "{external_user_id}",
    "id": "overledger-sign-a-transaction",
    "configured_props": {
      "overledger": { "authProvisionId": "apn_xxxxxxx" },
      "environment": "Overledger Instance",
      "locationTechnology": "Location Technology"
    }
  }'
```

---

- App: https://pipedream.com/apps/overledger.md · All apps: https://pipedream.com/apps