twilio-voice

Developer-friendly & type-safe Typescript SDK specifically catered to leverage twilio-voice API.

Summary

Twilio - Voice: This is the public Twilio REST API.

Table of Contents

• twilio-voice
  • SDK Installation
  • Requirements
  • SDK Example Usage
  • Authentication
  • Available Resources and Operations
  • Standalone functions
  • Retries
  • Error Handling
  • Server Selection
  • Custom HTTP Client
  • Debugging
• Development
  • Maturity
  • Contributions

SDK Installation

The SDK can be installed with either npm, pnpm, bun or yarn package managers.

NPM

npm add <UNSET>

PNPM

pnpm add <UNSET>

Bun

bun add <UNSET>

Yarn

yarn add <UNSET> zod

# Note that Yarn does not install peer dependencies automatically. You will need
# to install zod as shown above.

Model Context Protocol (MCP) Server

This SDK is also an installable MCP server where the various SDK methods are exposed as tools that can be invoked by AI applications.

Node.js v20 or greater is required to run the MCP server.

{
  "mcpServers": {
    "TwilioVoice": {
      "command": "npx",
      "args": [
        "-y", "--package", "twilio-voice",
        "--",
        "mcp", "start",
        "--username", "...",
        "--password", "..."
      ]
    }
  }
}

npx -y --package twilio-voice -- mcp start --username ... --password ... 

For a full list of server arguments, run:

npx -y --package twilio-voice -- mcp start --help

Requirements

For supported JavaScript runtimes, please consult RUNTIMES.md.

SDK Example Usage

Example

import { TwilioVoice } from "twilio-voice";
import { RFCDate } from "twilio-voice/types";

const twilioVoice = new TwilioVoice({
  security: {
    username: "",
    password: "",
  },
});

async function run() {
  await twilioVoice.voiceV1ArchivedCall.deleteArchivedCall({
    date: new RFCDate("2024-07-27"),
    sid: "<id>",
  });
}

run();

Authentication

Per-Client Security Schemes

This SDK supports the following security scheme globally:

You can set the security parameters through the security optional parameter when initializing the SDK client instance. For example:

import { TwilioVoice } from "twilio-voice";
import { RFCDate } from "twilio-voice/types";

const twilioVoice = new TwilioVoice({
  security: {
    username: "",
    password: "",
  },
});

async function run() {
  await twilioVoice.voiceV1ArchivedCall.deleteArchivedCall({
    date: new RFCDate("2024-07-27"),
    sid: "<id>",
  });
}

run();

Available Resources and Operations

Standalone functions

All the methods listed above are available as standalone functions. These functions are ideal for use in applications running in the browser, serverless runtimes or other environments where application bundle size is a primary concern. When using a bundler to build your application, all unused functionality will be either excluded from the final bundle or tree-shaken away.

To read more about standalone functions, check FUNCTIONS.md.

Retries

Some of the endpoints in this SDK support retries. If you use the SDK without any configuration, it will fall back to the default retry strategy provided by the API. However, the default retry strategy can be overridden on a per-operation basis, or across the entire SDK.

To change the default retry strategy for a single API call, simply provide a retryConfig object to the call:

import { TwilioVoice } from "twilio-voice";
import { RFCDate } from "twilio-voice/types";

const twilioVoice = new TwilioVoice({
  security: {
    username: "",
    password: "",
  },
});

async function run() {
  await twilioVoice.voiceV1ArchivedCall.deleteArchivedCall({
    date: new RFCDate("2024-07-27"),
    sid: "<id>",
  }, {
    retries: {
      strategy: "backoff",
      backoff: {
        initialInterval: 1,
        maxInterval: 50,
        exponent: 1.1,
        maxElapsedTime: 100,
      },
      retryConnectionErrors: false,
    },
  });
}

run();

If you'd like to override the default retry strategy for all operations that support retries, you can provide a retryConfig at SDK initialization:

import { TwilioVoice } from "twilio-voice";
import { RFCDate } from "twilio-voice/types";

const twilioVoice = new TwilioVoice({
  retryConfig: {
    strategy: "backoff",
    backoff: {
      initialInterval: 1,
      maxInterval: 50,
      exponent: 1.1,
      maxElapsedTime: 100,
    },
    retryConnectionErrors: false,
  },
  security: {
    username: "",
    password: "",
  },
});

async function run() {
  await twilioVoice.voiceV1ArchivedCall.deleteArchivedCall({
    date: new RFCDate("2024-07-27"),
    sid: "<id>",
  });
}

run();

Error Handling

If the request fails due to, for example 4XX or 5XX status codes, it will throw a APIError.

import { TwilioVoice } from "twilio-voice";
import { SDKValidationError } from "twilio-voice/models/errors";
import { RFCDate } from "twilio-voice/types";

const twilioVoice = new TwilioVoice({
  security: {
    username: "",
    password: "",
  },
});

async function run() {
  try {
    await twilioVoice.voiceV1ArchivedCall.deleteArchivedCall({
      date: new RFCDate("2024-07-27"),
      sid: "<id>",
    });
  } catch (err) {
    switch (true) {
      // The server response does not match the expected SDK schema
      case (err instanceof SDKValidationError):
        {
          // Pretty-print will provide a human-readable multi-line error message
          console.error(err.pretty());
          // Raw value may also be inspected
          console.error(err.rawValue);
          return;
        }
        apierror.js;
      // Server returned an error status code or an unknown content type
      case (err instanceof APIError): {
        console.error(err.statusCode);
        console.error(err.rawResponse.body);
        return;
      }
      default: {
        // Other errors such as network errors, see HTTPClientErrors for more details
        throw err;
      }
    }
  }
}

run();

Validation errors can also occur when either method arguments or data returned from the server do not match the expected format. The SDKValidationError that is thrown as a result will capture the raw value that failed validation in an attribute called rawValue. Additionally, a pretty() method is available on this error that can be used to log a nicely formatted multi-line string since validation errors can list many issues and the plain error string may be difficult read when debugging.

In some rare cases, the SDK can fail to get a response from the server or even make the request due to unexpected circumstances such as network conditions. These types of errors are captured in the models/errors/httpclienterrors.ts module:

Server Selection

Override Server URL Per-Client

The default server can be overridden globally by passing a URL to the serverURL: string optional parameter when initializing the SDK client instance. For example:

import { TwilioVoice } from "twilio-voice";
import { RFCDate } from "twilio-voice/types";

const twilioVoice = new TwilioVoice({
  serverURL: "https://voice.twilio.com",
  security: {
    username: "",
    password: "",
  },
});

async function run() {
  await twilioVoice.voiceV1ArchivedCall.deleteArchivedCall({
    date: new RFCDate("2024-07-27"),
    sid: "<id>",
  });
}

run();

Override Server URL Per-Operation

The server URL can also be overridden on a per-operation basis, provided a server list was specified for the operation. For example:

import { TwilioVoice } from "twilio-voice";
import { RFCDate } from "twilio-voice/types";

const twilioVoice = new TwilioVoice({
  security: {
    username: "",
    password: "",
  },
});

async function run() {
  await twilioVoice.voiceV1ArchivedCall.deleteArchivedCall({
    date: new RFCDate("2024-07-27"),
    sid: "<id>",
  }, {
    serverURL: "https://voice.twilio.com",
  });
}

run();

Custom HTTP Client

The TypeScript SDK makes API calls using an HTTPClient that wraps the native Fetch API. This client is a thin wrapper around fetch and provides the ability to attach hooks around the request lifecycle that can be used to modify the request or handle errors and response.

The HTTPClient constructor takes an optional fetcher argument that can be used to integrate a third-party HTTP client or when writing tests to mock out the HTTP client and feed in fixtures.

The following example shows how to use the "beforeRequest" hook to to add a custom header and a timeout to requests and how to use the "requestError" hook to log errors:

import { TwilioVoice } from "twilio-voice";
import { HTTPClient } from "twilio-voice/lib/http";

const httpClient = new HTTPClient({
  // fetcher takes a function that has the same signature as native `fetch`.
  fetcher: (request) => {
    return fetch(request);
  }
});

httpClient.addHook("beforeRequest", (request) => {
  const nextRequest = new Request(request, {
    signal: request.signal || AbortSignal.timeout(5000)
  });

  nextRequest.headers.set("x-custom-header", "custom value");

  return nextRequest;
});

httpClient.addHook("requestError", (error, request) => {
  console.group("Request Error");
  console.log("Reason:", `${error}`);
  console.log("Endpoint:", `${request.method} ${request.url}`);
  console.groupEnd();
});

const sdk = new TwilioVoice({ httpClient });

Debugging

You can setup your SDK to emit debug logs for SDK requests and responses.

You can pass a logger that matches console's interface as an SDK option.

import { TwilioVoice } from "twilio-voice";

const sdk = new TwilioVoice({ debugLogger: console });

You can also enable a default debug logger by setting an environment variable TWILIOVOICE_DEBUG to true.

Development

Maturity

This SDK is in beta, and there may be breaking changes between versions without a major version update. Therefore, we recommend pinning usage to a specific package version. This way, you can install the same version each time without breaking changes unless you are intentionally looking for the latest version.

Contributions

While we value open-source contributions to this SDK, this library is generated programmatically. Any manual changes added to internal files will be overwritten on the next generation. We look forward to hearing your feedback. Feel free to open a PR or an issue with a proof of concept and we'll do our best to include it in a future release.

SDK Created by Speakeasy