Openapi Messaging

Openapi messaging & communications

All services use a Bearer token (see the openapi-auth skill). Every send is an outward-facing, paid action: always confirm recipient, content and cost with the user before sending.

SMS v2 — https://sms.openapi.com

• POST /IT-messages (Italy), POST /ES-messages (Spain), POST /WW-messages (worldwide)
• POST /otp — OTP verification messages
• GET /messages, GET /messages/{id} — sent messages and delivery status

Features: custom sender, E.164 validation, GSM-7/UCS-2 detection with automatic segmentation, dry_run for free testing, webhook delivery callbacks. Messages expire after 48h (status EXPIRED). Worldwide pricing is computed post-sending and requires a minimum credit balance. SMS v1 (ws.messaggisms.com) is deprecated.

curl -s -X POST https://sms.openapi.com/IT-messages \
  -H "Authorization: Bearer $OPENAPI_TOKEN" \
  -H 'Content-Type: application/json' \
  -d '{"sender": "MyBrand", "body": "Hello!", "recipients": ["+39333…"], "options": {"dry_run": true}}'

PEC (certified e-mail) — https://pec.openapi.it

Activate and manage Legalmail certified e-mail boxes (creation, renewal, configuration).

Massive REM — https://ws.pecmassiva.com

Bulk certified e-mail sending; check delivery-verification and receipt-verification status per message.

Postal Service — https://ws.ufficiopostale.com

Physical mail via Poste Italiane. Same pattern per product: POST // (create, returns prices) → PATCH //{id} (confirm, or pass autoconfirm: true) → status callbacks to your callback URL → GET //{id}/accettazione (acceptance receipt).

Products: raccomandate and raccomandate_smart (registered mail), telegrammi, ordinarie, prioritarie, posta_massiva, posta_massiva_top, atti_giudiziari (judicial acts, with digital return receipt). Helpers: GET /pricing/, GET /nazioni/, GET /covers/, GET /dug/. Error responses include data.wrong_fields[] pinpointing invalid fields.

Full specs: https://console.openapi.com/oas/en/smsv2.openapi.json · …/pec.openapi.json · …/pecmassiva.openapi.json · …/ufficiopostale.openapi.json

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: openapi
• Source: openapi/openapi-skills
• License: MIT
• Homepage: https://openapi.com

Install and usage instructions live in the source repository linked above.