Siel

com.siellabsPublished by siellabs.comOfficial publisherv1.1.0Updated Nov 14, 2026

Send SMS and OTPs, and read messages, prices and the balance. Sign in, or use an API key.

VerifiedStreamable HTTPWeb executableCommunication & Collaboration

Overview

AI-generated overview

Siel's remote MCP server lets an assistant send SMS and OTP messages and read messages, prices and account balance using a Siel API key.

What you can do
  • Send SMS messages and one-time passwords to recipients
  • Read sent or received messages
  • Look up messaging prices
  • Check the account balance
When to use it
Useful when an assistant should trigger text messages or OTPs, or check message history, pricing and balance for a Siel account without leaving the chat.
Requirements
Remote streamable HTTP endpoint at api.siellabs.com. A Siel API key from the API keys section of the web app, sent as a bearer token in the Authorization header. A key with only the Read permission cannot send.
Before you install
The API key is a secret sent in the Authorization header; keep it out of logs and shared transcripts. Sending SMS and OTPs is an outward action that may cost money and reach real recipients, so confirm before sending. A Read-only key cannot send, so a sending key carries broader rights.

Installation

In SourceWeft

  1. Open Siel in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.siellabs%2Fsiel/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "siel": {
      "type": "http",
      "url": "https://api.siellabs.com/mcp"
    }
  }
}

Tools

0
SourceWeft has not read this server's tools yet.

Version history

2
  1. v1.1.0LatestNov 14, 2026
  2. v1.0.0Nov 14, 2026

Score

28% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declaredRequired10 pts
  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts

    Publish an icon in the registry entry.

  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.