Use Delivered with Claude.SMS, phone verification, and real numbers — as capabilities.

1. Connect the MCP server

Delivered speaks Model Context Protocol. Add this to Claude's MCP configuration and messages, verification, numbers, and lookup become tool calls:

{
  "mcpServers": {
    "ghost": {
      "url": "https://deliveredsms.com/api/mcp",
      "headers": { "Authorization": "Bearer dsms_sk_test_YOUR_KEY" }
    }
  }
}

Discovery: /.well-known/mcp.json

2. Install the skills

Three SKILL.md files teach Claude the API, the verification rules, and SMS compliance — so it writes correct integration code the first time:

npx skills add sbier060/deliveredsms

delivered · delivered-verify · sms-best-practices

3. Ask for the feature

A prompt like this now resolves against the real API, with a sandbox key that simulates everything and costs nothing:

Add phone verification to signup using Delivered Verify
(POST /v1/verify, then /v1/verify/check). Docs:
https://deliveredsms.com/docs/verify.md