# Send Message — Signal

> Send a Signal message to one or more recipients. See the documentation.

- Key: `signal-send-message`
- Type: Action (Write)
- Version: 0.0.1
- App: Signal (`signal`) — https://pipedream.com/apps/signal.md
- This page (HTML): https://pipedream.com/apps/signal/actions/send-message
- Hints: open-world
- Source: https://github.com/PipedreamHQ/pipedream/blob/master/components/signal/actions/send-message/send-message.mjs

## Description

Send a Signal message to one or more recipients. [See the documentation](https://bbernhard.github.io/signal-cli-rest-api/).

## Props

| Prop | Type | Required | Description |
|---|---|---|---|
| `phoneNumber` | `string` | Yes | Your registered Signal phone number (e.g. +14151234567). |
| `textMode` | `string` | No | Set to styled to enable formatting: italic, bold, ~strikethrough~, \|\|spoiler\|\|, monospace. |
| `recipients` | `string[]` | Yes | One or more phone numbers, usernames, or group IDs to send the message to. |
| `message` | `string` | Yes | The message text to send. |
| `attachments` | `string[]` | No | File paths (e.g. /tmp/file.pdf) or URLs to attach to the message. Files will be base64-encoded and sent with their detected MIME type and filename. |
| `syncDir` | `dir` | Yes | SyncDir |

## 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": "signal",
      },
    },
  },
)

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: "signal-send-message",
  arguments: {
    phoneNumber: "Phone Number",
    textMode: "Text Mode",
  },
})
```

**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: "signal-send-message",
  externalUserId: "{external_user_id}", // any stable ID for this user in your system
  configuredProps: {
    signal: { authProvisionId: "apn_xxxxxxx" },
    phoneNumber: "Phone Number",
    textMode: "Text Mode",
  },
})

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": "signal-send-message",
    "configured_props": {
      "signal": { "authProvisionId": "apn_xxxxxxx" },
      "phoneNumber": "Phone Number",
      "textMode": "Text Mode"
    }
  }'
```

---

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