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How to connect Saperly to Claude

Connect Claude Web, Desktop and Cowork to Saperly MCP. Send appointment reminder by sms, provision a new support phone number, and more using natural language, with authentication handled for you.

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Saperly is a phone carrier API for AI agents, offering phone numbers, voice, SMS, and compliance tools. It gives agents reliable telecom infrastructure without stitching together carrier, messaging, and compliance systems yourself.

30 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Saperly account to Claude via Composio Connect, enabling it to send appointment reminder by SMS, provision a new support phone number, check compliance status for messaging campaign, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

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Connecting Saperly to Claude Web, Desktop, and Cowork

1. Open Customize

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

2. Add the Composio MCP server

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

3. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

4. Connect your Saperly account

Back in Claude, ask it to connect to Saperly or give it any Saperly-related task.

For example, ask Claude to:

  • "Send appointment reminder by SMS"
  • "Provision a new support phone number"
  • "Check compliance status for messaging campaign"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your Saperly account is ready to use.

What is the Saperly Claude Connector, and what's possible with it?

The Saperly MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Saperly account. It provides structured and secure access so your agent can perform Saperly operations on your behalf.

Troubleshooting

1. Why does Claude not use the Composio connector for Saperly?

The connector can show as connected, but Claude must use it in each Saperly conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Saperly again.

2. Why does Claude show an MCP server error before Saperly connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Saperly.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Saperly.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Saperly authorization link not work?

The Composio connector is one server. Your Saperly account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Saperly connection.
  • Composio creates a fresh Saperly authorization link.
  • Open that link in your browser and finish the Saperly sign-in.

4. Why do Saperly actions fail after they worked before?

The Saperly connection can expire or lose permission.

  • Ask Claude to inspect the Saperly connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Saperly account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Saperly.
  • If the action still fails with a permission error, check that the connected account has that permission in Saperly itself.

5. How do I switch to a different Saperly account?

Claude can manage the Saperly connection for you.

  • Ask Claude to disconnect or delete the current Saperly account.
  • Ask Claude to connect Saperly again.
  • Open the new Composio authorization link for Saperly.
  • Sign in with the other Saperly account in the browser.
  • After the account connects, ask Claude to retry the Saperly task.

6. Why is my Saperly connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Saperly connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Saperly tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Saperly.
TOOLS

Supported Tools

Every Saperly action and event your agent gets out of the box.

Bind Connection to Number

Attach a connection (the AI persona / answering brain from SAPERLY_CREATE_CONNECTION) to a phone number, so inbound calls and SMS to that number — and outbound calls placed from it — are handled by that connection.

Check Consent

Check whether a contact currently has active TCPA consent for one of your Saperly numbers, given numberId (your number) and peerNumber (the contact's E.

Create Connection

Create a connection: the AI 'brain' that answers calls and (optionally) SMS on a Saperly phone number.

Delete Connection

PERMANENTLY AND IRREVERSIBLY delete a connection (the AI answering brain / persona that handles calls and SMS) by its id.

End Call

End an in-progress call by its id, hanging up and settling the metered cost.

Get Call

Fetch a single call by its id, returning its status, per-minute rate, final duration (durationSec) and cost (costCents), and the hasRecording / hasTranscript flags.

Get Call Recording

Get the audio recording for a call and return it as a downloadable file.

Get Call Transcript

Fetch the transcript (conversation turns/segments) of a completed call by its id.

Get Connection

Fetch a single connection (the AI answering brain / persona that handles calls and SMS) by its id, returning its full config: name, mode, backend, instructions, tts voice, language, compliance/disclosure settings, recordingEnabled, and manual webhook URL.

Get Phone Number

Fetch a single phone number by its id, returning its E.

Get Usage & Balance

Return the workspace usage summary and prepaid balance: calls {count, totalCostCents, totalDurationSec}, messages {count}, and balanceCents (the prepaid balance, in cents).

List Calls

Return the full voice-call history (inbound + outbound) for the connected Saperly workspace.

List Connections

Return every connection (the AI persona / answering 'brain' that handles calls and SMS) in the connected Saperly workspace.

List Consent Records

Return every TCPA consent record in the connected Saperly workspace, with each record's id, numberId (the Saperly number contact is authorized FROM), peerNumber (the contact's E.

List Languages

Return the spoken languages Saperly supports for voice connections, each as a {code, name} pair (about 42 entries, e.

List Messages

Return SMS messages in the connected Saperly workspace (both inbound and outbound).

List Phone Numbers

Return every phone number provisioned in the connected Saperly workspace, with each number's id, phoneNumber (E.

List Voices

List the text-to-speech voices available for Saperly connections.

Place Call

PAID / METERED — places a REAL outbound voice call that RINGS A REAL PHONE and BILLS PER MINUTE (~26¢/min); it keeps billing until hung up — end it with SAPERLY_END_CALL to stop the meter.

Provision Phone Number

PAID / METERED: provision (buy) a new phone number in a country.

Quote Number Price

READ-ONLY and FREE: quote the price to provision a phone number in a country/type, returning { customerMonthlyCents, customerUpfrontCents }.

Record Consent

Record TCPA consent for a contact so outbound SMS (SAPERLY_SEND_SMS) and calls (SAPERLY_PLACE_CALL) from your number are permitted.

Release Phone Number

PERMANENTLY AND IRREVERSIBLY release a phone number back to the carrier.

Revoke Consent

Revoke a contact's TCPA consent for a given Saperly number, blocking further outbound contact to them.

Send SMS

PAID / METERED: send a single SMS from one of your Saperly numbers to an E.

Set Number Caller ID Name

Set the outbound caller ID name / CNAM (1-15 characters: letters, digits, spaces) presented to recipients on outbound calls from a Saperly phone number, or pass callerIdName=null to CLEAR it.

Set Number SMS Sender ID

Set the alphanumeric SMS sender id (1-11 alphanumeric chars, e.

Set Number Webhook

Set the HTTPS webhook URL that Saperly POSTs this number's events (inbound SMS/calls, status) to.

Transfer Call

PAID / METERED — BLIND-transfers a LIVE, in-progress voice call to another destination `to` (an E.

Update Connection

Partially update a connection (the AI answering brain bound to a number).

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FAQ

Frequently asked questions

With a standalone Saperly MCP server, the agents and LLMs can only access a fixed set of Saperly tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Saperly and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Saperly tools.

Yes, absolutely. You can configure which Saperly scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Saperly data and credentials are handled as safely as possible.

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