Zernio
Zernio
API Reference

SMS

Messaging

Send an SMS/MMSPOSTLook up carrier + line typeGETList SMS opt-outsGET

Number Setup

Enable SMS on a numberPOSTDisable SMS on a numberDELETEAdd number to SMS registrationPOST

Registrations

List carrier registrationsGETPre-check a carrier registrationPOSTStart a carrier registrationPOSTGet a carrier registrationGETCreate a registration share linkPOSTDeactivate a brand/campaign registrationDELETE

Registration Review

Appeal a rejected campaignPOSTReply to a change requestPOSTUpload opt-in form proof for an appealPOSTUpload opt-in form proofPOSTRe-send the sole-prop OTPPOSTSubmit the sole-prop OTPPOST

Sender IDs

List alphanumeric sender IDsGETCreate an alphanumeric sender IDPOSTDelete an alphanumeric sender IDDELETERequest a higher sender ID daily limitPOST
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SMS

Pre-check a carrier registration

Dry-run of POST /v1/sms/registrations for 10DLC: validates and composes the exact brand/campaign payloads a submission would store (branding, disclosures, auto-replies), runs deterministic compliance lints plus an AI reviewer over them, and returns the findings WITHOUT creating anything. Use it to fix issues before submitting; block severity findings indicate a near-certain carrier rejection.

POST
/v1/sms/registrations/preflight

Authorization

bearerAuth
AuthorizationBearer <token>

API key authentication: send your Zernio API key in the Authorization header, prefixed with Bearer.

In: header

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

Response Body

application/json

application/json

application/json

{  "composed": {    "brand": {},    "campaign": {}  },  "advisories": [    {      "field": "string",      "code": "string",      "concern": "string",      "severity": "block"    }  ],  "verdict": "pass",  "aiUnavailable": true}
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List carrier registrations

Previous Page

Start a carrier registration

Starts the US carrier registration that a number needs before SMS delivers: 10DLC (standard company or sole-proprietor) or toll-free verification. 10DLC needs `brand` + `campaign`; toll-free needs `tollFree`. Approval is asynchronous; poll `GET /v1/sms/registrations/{id}` (sole-prop registrations first need the OTP step: a code is texted to the brand's mobile number, submit it via `/verify-otp`). Already have an approved registration? Add another number to it with `POST /v1/phone-numbers/{id}/sms/reuse-registration` instead of registering (and paying the carrier brand fee) again. Rather have your client fill in the legal business details? Create a share link with `POST /v1/sms/registrations/share`.

registrationType*string

Value in

  • "standard_10dlc"
  • "sole_prop_10dlc"
phoneNumbers?array<string>
brand*

Same shape as the registration brand.

campaign*

Same shape as the registration campaign.

messagingBrandName?string
Length2 <= length <= 60