The autonomous software engineer

Use SimpleSMS with Devin.SMS, phone verification, and real numbers, as capabilities.

Point Devin at the SimpleSMS skills and long-running tasks like 'add SMS 2FA' resolve against a real sandbox it can test end to end.

1. Install the skills

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

curl -sSL https://joinsimplesms.com/skills/install.sh | sh

simplesms · simplesms-verify · sms-best-practices

2. Connect the MCP server

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

{
  "mcpServers": {
    "simplesms": {
      "url": "https://mcp.joinsimplesms.com",
      "headers": { "Authorization": "Bearer ssms_sk_test_YOUR_KEY" }
    }
  }
}

Discovery: /.well-known/mcp.json

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 SimpleSMS Verify
(POST /v1/verify, then /v1/verify/check). Docs:
https://joinsimplesms.com/docs/verify.md

Everything Devin needs is machine-readable: an OpenAPI spec, markdown twins of every docs page, and a single-file llms.txt of the whole documentation set.

/llms.txt
/api/v1/openapi.yaml
/docs/llms-full.txt

Get started Documentation